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2001 National Household  Survey on Drug Abuse

Initiation of Substance Use Tables - Tables H.42 to H.55

 

20624 (4.1A)
Table H.42 Estimated Numbers (in Thousands) of Persons Who First Used Marijuana During the Years 1965 to 2000, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 1999-2001 NHSDAs

 

NUMBER OF INITIATES (1,000s)

MEAN AGE

AGE-SPECIFIC RATES1

YEAR

All Ages

12-17

18-25

12-17

18-25

    1965

585

194

308

19.7

8.5

14.2

    1966

944

308

555

19.2

13.5

24.1

    1967

1,358

483

792

19.2

21.0

33.5

    1968

1,850

560

1,145

19.3

24.0

47.9

    1969

2,290

854

1,245

18.9

36.3

52.8

    1970

2,477

1,075

1,133

18.6

45.5

48.6

    1971

2,807

1,150

1,329

18.7

48.7

57.9

    1972

2,746

1,316

1,146

18.7

55.9

51.1

    1973

3,006

1,521

1,108

18.4

64.9

51.7

    1974

2,949

1,557

1,036

18.1

67.5

50.2

    1975

2,847

1,538

965

18.4

67.1

47.9

    1976

3,208

1,689

1,156

18.5

74.6

58.8

    1977

3,135

1,812

1,014

17.9

82.1

52.9

    1978

2,972

1,688

932

18.2

79.3

49.7

    1979

2,850

1,659

859

18.4

80.8

46.4

    1980

2,639

1,471

796

19.1

74.0

43.6

    1981

1,996

1,084

633

18.5

55.1

35.0

    1982

2,080

1,150

670

18.6

58.5

37.4

    1983

1,885

1,093

569

18.1

55.4

31.9

    1984

2,024

1,178

619

18.2

60.4

34.9

    1985

1,860

1,103

610

17.8

57.3

34.6

    1986

1,824

1,057

619

18.0

56.2

35.2

    1987

1,599

929

553

18.0

50.3

31.6

    1988

1,589

915

570

17.7

50.6

32.4

    1989

1,458

822

520

17.5

46.0

29.3

    1990

1,448

789

508

18.4

43.7

28.9

    1991

1,483

788

551

18.0

43.0

31.4

    1992

1,648

957

590

16.9

51.0

33.8

    1993

1,924

1,160

598

17.1

60.5

34.5

    1994

2,220

1,390

692

16.9

71.7

40.5

    1995

2,439

1,539

766

16.6

79.4

46.0

    1996

2,531

1,622

734

17.0

84.3

45.3

    1997

2,469

1,628

704

16.9

84.8

44.8

    1998

2,512

1,613

725

17.4

84.0

47.4

    19992

2,322

1,577

602

16.9

82.0

39.5

    20003

2,440

1,622

621

17.5

84.0

42.5

*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person time exposure measured in thousands of years.
2 Estimated using 2000 and 2001 data only.
3 Estimated using 2001 data only.
Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1999-2001.

 

20624 (4.2A)
Table H.43 Estimated Numbers (in Thousands) of Persons Who First Used Cocaine During the Years 1965 to 2000, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 1999-2001 NHSDAs

 

NUMBER OF INITIATES (1,000s)

MEAN AGE

AGE-SPECIFIC RATES1

YEAR

All Ages

12-17

18-25

12-17

18-25

    1965

18

*

*

*

*

*

    1966

37

*

24

21.0

*

1.0

    1967

81

29

49

17.2

1.2

1.9

    1968

173

28

120

20.4

1.1

4.5

    1969

216

37

154

19.5

1.5

5.6

    1970

258

34

189

21.0

1.3

6.6

    1971

358

90

233

20.8

3.5

7.9

    1972

457

93

337

19.7

3.6

11.2

    1973

401

123

260

19.6

4.7

8.6

    1974

582

119

386

21.4

4.5

12.8

    1975

776

171

497

21.4

6.4

16.3

    1976

817

176

512

21.0

6.7

16.6

    1977

988

239

600

20.9

9.2

19.4

    1978

1,054

243

635

21.3

9.6

20.5

    1979

1,196

222

731

21.6

9.0

23.5

    1980

1,280

284

733

21.7

11.9

23.5

    1981

1,185

204

762

21.8

8.8

24.5

    1982

1,213

198

747

22.5

8.7

24.3

    1983

1,484

236

892

22.6

10.5

29.6

    1984

1,226

228

745

22.1

10.3

25.3

    1985

1,222

231

733

22.1

10.5

25.6

    1986

1,042

230

576

22.8

10.7

20.5

    1987

1,053

211

610

22.4

10.1

22.2

    1988

837

162

508

22.2

8.0

18.6

    1989

722

157

376

22.9

7.9

13.9

    1990

703

111

384

22.9

5.6

14.4

    1991

561

90

299

23.8

4.5

11.4

    1992

539

109

289

22.9

5.3

11.1

    1993

571

132

312

22.4

6.1

12.1

    1994

583

157

288

22.3

7.1

11.3

    1995

648

194

348

21.1

8.6

13.7

    1996

693

241

358

20.6

10.5

14.3

    1997

785

270

433

19.8

11.6

17.5

    1998

841

308

439

20.1

13.2

17.7

    19992

851

289

462

20.1

12.3

18.5

    20003

926

314

503

20.0

13.3

20.1

*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person time exposure measured in thousands of years.
2 Estimated using 2000 and 2001 data only.
3 Estimated using 2001 data only.
Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1999-2001.

 

20624 (4.4A)
Table H.44 Estimated Numbers (in Thousands) of Persons Who First Used Heroin During the Years 1965 to 2000, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 1999-2001 NHSDAs

 

NUMBER OF INITIATES (1,000s)

MEAN AGE

AGE-SPECIFIC RATES1

YEAR

All Ages

12-17

18-25

12-17

18-25

    1965

*

*

*

*

*

*

    1966

24

*

*

14.8

*

*

    1967

49

42

7

16.1

1.8

0.3

    1968

48

*

*

16.9

*

*

    1969

84

16

65

19.3

0.7

2.3

    1970

98

45

49

18.4

1.8

1.7

    1971

102

22

80

19.3

0.8

2.7

    1972

78

19

51

20.0

0.7

1.6

    1973

97

20

64

20.7

0.8

2.1

    1974

99

*

78

20.7

*

2.5

    1975

128

*

102

22.4

*

3.2

    1976

120

33

61

20.9

1.2

1.9

    1977

136

*

105

23.0

*

3.2

    1978

63

*

38

21.0

*

1.1

    1979

112

*

68

24.0

*

2.0

    1980

49

*

11

26.6

*

0.3

    1981

57

*

34

22.8

*

1.0

    1982

85

14

37

26.5

0.6

1.0

    1983

33

7

14

23.4

0.3

0.4

    1984

53

12

25

22.4

0.5

0.7

    1985

87

*

24

28.7

*

0.7

    1986

63

*

42

23.7

*

1.3

    1987

49

*

23

22.9

*

0.7

    1988

65

10

40

21.6

0.5

1.3

    1989

55

6

19

24.0

0.3

0.6

    1990

61

5

32

24.7

0.3

1.1

    1991

63

10

27

22.9

0.5

0.9

    1992

69

16

29

23.4

0.8

1.0

    1993

77

12

36

24.7

0.6

1.3

    1994

110

28

34

24.3

1.3

1.2

    1995

89

26

49

20.3

1.1

1.8

    1996

116

38

59

20.7

1.6

2.1

    1997

146

36

55

23.4

1.5

2.0

    1998

135

42

52

22.4

1.8

1.9

    19992

136

32

56

24.5

1.4

2.0

    20003

146

40

61

22.3

1.7

2.2

*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person time exposure measured in thousands of years.
2 Estimated using 2000 and 2001 data only.
3 Estimated using 2001 data only.
Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1999-2001.

 

20624 (4.5A)
Table H.45 Estimated Numbers (in Thousands) of Persons Who First Used Hallucinogens During the Years 1965 to 2000, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 1999-2001 NHSDAs

 

NUMBER OF INITIATES (1,000s)

MEAN AGE

AGE-SPECIFIC RATES1

YEAR

All Ages

12-17

18-25

12-17

18-25

    1965

90

33

49

19.0

1.4

2.2

    1966

101

48

43

18.9

2.1

1.8

    1967

314

118

182

18.3

5.0

7.1

    1968

381

164

187

18.1

6.8

7.1

    1969

654

218

401

18.8

8.9

14.8

    1970

847

315

458

19.0

12.7

16.6

    1971

907

410

471

18.2

16.3

16.7

    1972

890

393

479

18.2

15.5

16.8

    1973

734

363

350

18.3

14.1

12.4

    1974

868

420

434

18.0

16.2

15.5

    1975

832

319

424

19.6

12.3

15.0

    1976

941

461

415

18.9

17.8

14.5

    1977

755

333

356

18.8

13.0

12.3

    1978

804

392

331

19.1

15.6

11.3

    1979

812

348

406

18.8

14.3

13.7

    1980

875

409

419

18.3

17.4

14.0

    1981

903

342

476

19.8

14.9

15.7

    1982

616

220

357

19.3

9.7

11.8

    1983

654

265

338

19.1

11.8

11.3

    1984

664

285

346

18.9

12.9

11.7

    1985

613

266

294

19.1

12.2

10.1

    1986

636

281

315

18.8

13.2

11.0

    1987

673

293

281

19.7

14.1

10.0

    1988

580

236

320

18.7

11.7

11.5

    1989

623

271

308

18.7

13.7

11.3

    1990

594

217

330

19.2

11.0

12.3

    1991

619

250

340

18.8

12.6

13.0

    1992

690

299

319

19.4

14.7

12.5

    1993

670

324

298

18.7

15.4

11.9

    1994

821

408

350

18.4

18.8

14.2

    1995

906

463

393

18.0

21.0

16.4

    1996

958

492

417

17.9

22.1

17.7

    1997

1,014

513

435

18.1

22.7

18.9

    1998

1,177

603

516

18.0

26.5

22.5

    19992

1,471

697

656

18.4

30.6

28.6

    20003

1,486

682

715

18.6

29.9

31.6

*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person time exposure measured in thousands of years.
2 Estimated using 2000 and 2001 data only.
3 Estimated using 2001 data only.
Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1999-2001.

 

20624 (4.9A)
Table H.46 Estimated Numbers (in Thousands) of Persons Who First Used Inhalants During the Years 1965 to 2000, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 1999-2001 NHSDAs

 

NUMBER OF INITIATES (1,000s)

MEAN AGE

AGE-SPECIFIC RATES1

YEAR

All Ages

12-17

18-25

12-17

18-25

    1965

78

27

*

13.4

1.2

*

    1966

156

88

35

15.6

3.8

1.4

    1967

149

69

33

17.6

2.9

1.3

    1968

227

123

60

15.9

5.1

2.3

    1969

227

129

67

15.5

5.3

2.4

    1970

229

126

75

16.9

5.1

2.6

    1971

243

142

79

15.8

5.6

2.7

    1972

287

129

113

17.1

5.0

3.7

    1973

327

145

159

18.1

5.6

5.3

    1974

411

197

188

17.6

7.5

6.2

    1975

504

224

224

18.2

8.6

7.2

    1976

517

233

224

17.9

9.0

7.1

    1977

607

294

264

17.7

11.5

8.4

    1978

662

345

234

18.3

13.8

7.4

    1979

633

316

223

18.6

13.1

6.9

    1980

513

247

154

19.1

10.6

4.8

    1981

490

211

208

18.0

9.2

6.4

    1982

396

203

133

18.4

9.0

4.1

    1983

442

239

156

17.5

10.7

4.9

    1984

475

263

167

17.7

12.0

5.3

    1985

410

224

130

17.6

10.4

4.2

    1986

453

265

140

17.4

12.6

4.6

    1987

485

254

180

17.7

12.3

6.1

    1988

446

262

126

16.9

13.2

4.4

    1989

435

232

137

18.0

11.9

4.8

    1990

418

221

147

17.6

11.3

5.3

    1991

431

216

149

17.9

11.0

5.5

    1992

490

256

154

17.5

12.7

5.8

    1993

558

289

188

16.9

13.9

7.3

    1994

618

333

195

17.0

15.5

7.7

    1995

691

365

198

17.9

16.7

7.9

    1996

696

404

195

16.0

18.2

8.0

    1997

895

500

236

17.4

22.4

9.8

    1998

879

553

220

15.7

24.8

9.1

    19992

999

620

260

16.5

27.8

10.6

    20003

979

626

228

16.2

28.0

9.2

*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person time exposure measured in thousands of years.
2 Estimated using 2000 and 2001 data only.
3 Estimated using 2001 data only.
Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1999-2001.

 

20624 (4.10A)
Table H.47 Estimated Numbers (in Thousands) of Persons Who First Used Pain Relievers During the Years 1965 to 2000, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 1999-2001 NHSDAs

 

NUMBER OF INITIATES (1,000s)

MEAN AGE

AGE-SPECIFIC RATES1

YEAR

All Ages

12-17

18-25

12-17

18-25

    1965

110

51

25

19.8

2.2

1.1

    1966

115

57

47

17.3

2.5

1.9

    1967

152

58

68

17.9

2.5

2.7

    1968

168

74

58

18.7

3.1

2.2

    1969

278

79

180

18.3

3.2

6.6

    1970

286

102

124

19.2

4.1

4.4

    1971

315

114

145

19.4

4.5

4.9

    1972

342

149

159

19.5

5.8

5.3

    1973

392

135

208

19.9

5.1

6.9

    1974

405

161

180

20.4

6.1

5.9

    1975

403

126

169

21.0

4.8

5.5

    1976

422

147

168

20.8

5.6

5.3

    1977

509

170

279

19.7

6.6

8.8

    1978

507

191

216

19.7

7.5

6.7

    1979

374

103

207

20.6

4.2

6.3

    1980

484

173

176

23.4

7.3

5.3

    1981

499

145

197

22.7

6.3

5.9

    1982

407

91

189

23.6

4.0

5.7

    1983

443

92

225

22.7

4.1

6.8

    1984

361

111

164

20.3

5.0

5.0

    1985

409

100

163

22.7

4.5

5.1

    1986

424

110

169

22.8

5.1

5.4

    1987

454

105

172

23.7

5.0

5.6

    1988

415

123

187

21.7

6.1

6.2

    1989

541

100

262

22.9

5.0

8.9

    1990

554

94

245

24.6

4.8

8.5

    1991

571

138

205

23.5

6.9

7.3

    1992

626

148

238

23.2

7.2

8.6

    1993

681

193

253

22.7

9.1

9.4

    1994

752

249

271

21.8

11.4

10.3

    1995

983

303

340

22.9

13.7

13.2

    1996

1,075

379

380

22.5

17.0

15.1

    1997

1,287

515

473

21.3

22.9

19.2

    1998

1,463

641

501

20.4

28.6

20.5

    19992

1,666

727

596

20.3

32.6

24.5

    20003

2,033

933

697

20.8

42.1

29.1

*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person time exposure measured in thousands of years.
2 Estimated using 2000 and 2001 data only.
3 Estimated using 2001 data only.
Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1999-2001.

 

20624 (4.11A)
Table H.48 Estimated Numbers (in Thousands) of Persons Who First Used Tranquilizers During the Years 1965 to 2000, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 1999-2001 NHSDAs

 

NUMBER OF INITIATES (1,000s)

MEAN AGE

AGE-SPECIFIC RATES1

YEAR

All Ages

12-17

18-25

12-17

18-25

    1965

52

*

*

16.2

*

*

    1966

108

54

50

18.4

2.3

2.1

    1967

75

23

31

21.6

1.0

1.2

    1968

147

29

80

19.7

1.2

3.0

    1969

191

45

100

21.9

1.8

3.6

    1970

222

85

108

19.3

3.4

3.8

    1971

274

128

113

19.7

5.0

3.8

    1972

270

75

150

21.7

2.9

4.9

    1973

353

138

145

20.4

5.2

4.8

    1974

419

168

198

19.7

6.3

6.5

    1975

331

120

169

19.8

4.5

5.4

    1976

410

156

175

20.9

5.9

5.5

    1977

451

132

248

21.4

5.1

7.7

    1978

321

122

160

20.7

4.8

4.9

    1979

468

137

225

22.2

5.5

6.8

    1980

381

116

205

21.0

4.8

6.2

    1981

386

108

188

21.5

4.6

5.6

    1982

317

77

170

22.1

3.4

5.1

    1983

395

103

185

23.0

4.5

5.6

    1984

373

86

137

24.8

3.9

4.2

    1985

311

79

112

24.7

3.6

3.5

    1986

294

74

127

24.0

3.4

4.0

    1987

302

55

101

25.6

2.6

3.3

    1988

304

46

123

26.2

2.2

4.0

    1989

384

79

139

25.6

3.9

4.6

    1990

335

49

150

26.2

2.4

5.1

    1991

345

63

144

25.9

3.1

5.0

    1992

390

77

141

26.6

3.7

5.0

    1993

389

86

160

25.4

4.0

5.8

    1994

540

119

206

25.3

5.4

7.6

    1995

558

155

226

23.2

6.9

8.4

    1996

583

162

240

24.7

7.1

9.1

    1997

711

221

271

23.6

9.5

10.5

    1998

774

256

265

23.8

11.0

10.2

    19992

734

269

335

21.4

11.5

12.8

    20003

973

331

354

23.3

14.0

13.5

*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person time exposure measured in thousands of years.
2 Estimated using 2000 and 2001 data only.
3 Estimated using 2001 data only.
Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1999-2001.

 

20624 (4.12A)
Table H.49 Estimated Numbers (in Thousands) of Persons Who First Used Stimulants During the Years 1965 to 2000, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 1999-2001 NHSDAs

 

NUMBER OF INITIATES (1,000s)

MEAN AGE

AGE-SPECIFIC RATES1

YEAR

All Ages

12-17

18-25

12-17

18-25

    1965

185

35

123

20.5

1.5

5.5

    1966

190

62

108

20.1

2.6

4.5

    1967

199

89

107

17.9

3.8

4.2

    1968

378

136

210

18.9

5.6

8.0

    1969

385

137

221

19.1

5.6

8.1

    1970

498

204

275

17.9

8.2

9.8

    1971

402

141

253

18.2

5.5

8.8

    1972

503

192

279

19.0

7.5

9.5

    1973

446

157

273

18.4

6.0

9.3

    1974

646

253

337

19.3

9.6

11.4

    1975

547

194

312

19.0

7.4

10.4

    1976

508

144

305

19.5

5.5

10.0

    1977

494

177

279

19.1

6.8

9.1

    1978

506

206

274

18.7

8.1

8.8

    1979

537

255

258

18.3

10.4

8.2

    1980

586

262

292

18.0

11.0

9.1

    1981

572

214

315

19.0

9.3

9.7

    1982

436

149

240

19.3

6.6

7.4

    1983

348

142

173

18.9

6.3

5.4

    1984

327

106

180

20.1

4.8

5.7

    1985

335

144

161

19.0

6.6

5.2

    1986

351

103

158

22.1

4.8

5.2

    1987

285

101

163

19.7

4.8

5.4

    1988

230

58

139

20.6

2.8

4.7

    1989

236

76

106

20.8

3.8

3.6

    1990

257

69

119

22.0

3.5

4.1

    1991

219

82

99

19.8

4.1

3.5

    1992

257

94

125

19.6

4.5

4.5

    1993

306

132

120

19.2

6.2

4.4

    1994

398

193

136

19.0

8.8

5.0

    1995

518

232

195

19.5

10.3

7.3

    1996

535

251

201

19.3

11.1

7.7

    1997

679

308

232

21.3

13.4

9.0

    1998

662

347

236

18.4

15.1

9.2

    19992

707

341

245

19.8

14.7

9.4

    20003

697

360

263

18.5

15.5

10.1

*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person time exposure measured in thousands of years.
2 Estimated using 2000 and 2001 data only.
3 Estimated using 2001 data only.
Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1999-2001.

 

20624 (4.14A)
Table H.50 Estimated Numbers (in Thousands) of Persons Who First Used Sedatives During the Years 1965 to 2000, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 1999-2001 NHSDAs

 

NUMBER OF INITIATES (1,000s)

MEAN AGE

AGE-SPECIFIC RATES1

YEAR

All Ages

12-17

18-25

12-17

18-25

    1965

78

*

42

20.1

*

1.8

    1966

53

23

14

19.0

1.0

0.6

    1967

102

69

27

18.1

2.9

1.0

    1968

187

123

60

16.3

5.1

2.2

    1969

180

61

90

20.9

2.5

3.3

    1970

342

159

165

18.2

6.3

5.8

    1971

293

134

156

18.0

5.2

5.3

    1972

330

144

182

18.4

5.6

6.0

    1973

428

141

268

19.1

5.4

8.9

    1974

437

226

186

18.9

8.6

6.2

    1975

363

128

230

19.1

4.9

7.5

    1976

343

135

167

19.4

5.1

5.4

    1977

409

159

216

19.3

6.1

6.9

    1978

405

142

223

19.7

5.5

7.0

    1979

390

123

210

20.6

5.0

6.5

    1980

333

122

178

19.9

5.1

5.4

    1981

279

107

142

19.6

4.6

4.3

    1982

272

78

159

20.0

3.4

4.8

    1983

162

50

95

19.7

2.2

2.9

    1984

142

37

80

21.6

1.6

2.5

    1985

105

46

51

18.9

2.1

1.6

    1986

98

19

59

21.9

0.9

1.9

    1987

115

23

49

23.9

1.1

1.6

    1988

93

21

44

22.9

1.0

1.4

    1989

67

21

15

23.4

1.0

0.5

    1990

89

21

17

31.1

1.0

0.6

    1991

90

17

44

27.2

0.8

1.5

    1992

77

20

34

24.7

0.9

1.2

    1993

77

27

32

20.4

1.3

1.1

    1994

95

39

35

20.1

1.8

1.3

    1995

111

45

33

25.9

2.0

1.2

    1996

159

51

45

25.5

2.2

1.7

    1997

124

54

47

20.0

2.3

1.7

    1998

144

58

50

20.9

2.5

1.8

    19992

160

56

51

26.4

2.3

1.9

    20003

175

72

67

20.8

3.0

2.4

*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person time exposure measured in thousands of years.
2 Estimated using 2000 and 2001 data only.
3 Estimated using 2001 data only.
Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1999-2001.

 

20624 (4.15A)
Table H.51 Estimated Numbers (in Thousands) of Persons Who First Used Alcohol During the Years 1965 to 2000, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 1999-2001 NHSDAs

 

NUMBER OF INITIATES (1,000s)

MEAN AGE

AGE-SPECIFIC RATES1

YEAR

All Ages

12-17

18-25

12-17

18-25

    1965

3,150

1,400

1,465

17.6

72.0

196.0

    1966

3,397

1,495

1,619

17.9

76.9

208.5

    1967

3,855

1,925

1,703

17.4

99.2

214.7

    1968

3,809

1,841

1,632

17.4

93.7

207.7

    1969

3,934

1,874

1,783

17.4

93.8

227.9

    1970

4,017

2,025

1,635

17.5

100.1

213.1

    1971

4,140

2,161

1,684

17.1

106.4

220.2

    1972

4,440

2,388

1,725

17.0

117.8

233.7

    1973

4,313

2,470

1,527

16.6

122.4

211.7

    1974

4,358

2,417

1,624

16.7

121.3

227.6

    1975

4,257

2,575

1,382

16.8

130.6

194.2

    1976

4,057

2,419

1,255

16.7

124.0

177.0

    1977

4,195

2,398

1,475

16.9

125.9

209.6

    1978

3,988

2,415

1,309

16.8

130.0

191.1

    1979

4,144

2,420

1,399

16.8

135.8

202.7

    1980

3,926

2,281

1,230

17.4

132.5

179.7

    1981

3,750

2,179

1,268

16.8

129.3

184.0

    1982

3,664

2,159

1,215

16.6

129.9

177.9

    1983

3,360

1,991

1,098

16.9

120.1

163.0

    1984

3,500

2,102

1,116

16.8

128.7

168.6

    1985

3,543

2,159

1,129

16.6

135.2

174.1

    1986

3,528

2,089

1,111

16.9

134.8

174.0

    1987

3,260

1,789

1,144

17.1

118.9

184.1

    1988

3,421

2,031

1,082

16.7

138.8

175.6

    1989

2,999

1,690

1,002

16.9

116.8

160.9

    1990

3,144

1,782

1,009

16.9

121.8

163.7

    1991

3,144

1,772

1,053

16.5

118.8

175.0

    1992

3,290

1,868

1,096

16.9

121.8

188.2

    1993

3,322

1,926

1,060

16.6

121.7

187.5

    1994

3,466

2,103

1,060

16.3

130.2

192.6

    1995

3,541

2,186

990

16.4

134.5

182.0

    1996

3,858

2,414

1,089

16.3

149.1

204.3

    1997

4,334

2,841

1,145

16.3

179.2

221.7

    19982

4,638

3,069

1,168

16.2

195.4

230.8

    19993

5,011

3,508

1,195

15.9

228.4

248.6

    20003

--

3,093

1,133

--

217.1

252.1

*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person time exposure measured in thousands of years.
2 Estimated using 2000 and 2001 data only.
3 Estimated using 2001 data only.
Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1999-2001.

 

20624 (4.16A)
Table H.52 Estimated Numbers (in Thousands) of Persons Who First Used Any Cigarettes During the Years 1965 to 2000, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 1999-2001 NHSDAs

 

NUMBER OF INITIATES (1,000s)

MEAN AGE

AGE-SPECIFIC RATES1

YEAR

All Ages

12-17

18-25

12-17

18-25

    1965

2,801

1,849

577

15.5

113.1

75.8

    1966

2,774

1,732

660

15.4

105.5

80.7

    1967

3,114

1,880

802

15.7

113.1

93.1

    1968

3,054

1,939

692

15.1

114.8

77.6

    1969

3,082

1,775

789

15.5

102.0

85.6

    1970

3,264

2,104

763

15.2

118.4

80.9

    1971

3,218

2,077

658

15.2

116.3

65.9

    1972

3,483

2,128

855

15.7

119.5

83.4

    1973

3,396

2,260

643

14.9

126.6

62.9

    1974

3,589

2,321

821

15.5

131.2

79.3

    1975

3,468

2,315

696

15.0

132.3

66.3

    1976

3,382

2,250

697

15.5

129.6

65.3

    1977

3,210

2,101

642

15.4

123.1

60.0

    1978

3,291

2,200

703

15.8

132.2

65.4

    1979

3,006

1,899

700

15.9

118.3

65.0

    1980

2,678

1,686

659

15.5

106.6

60.6

    1981

2,758

1,708

662

16.2

108.7

60.3

    1982

2,499

1,628

520

15.8

103.3

47.1

    1983

2,529

1,599

601

15.7

100.4

54.2

    1984

2,690

1,809

586

15.6

115.3

52.7

    1985

2,603

1,727

573

15.9

112.6

51.6

    1986

2,569

1,644

599

15.9

109.7

53.7

    1987

2,476

1,606

572

15.9

110.0

51.6

    1988

2,400

1,483

551

15.9

103.9

49.3

    1989

2,383

1,457

603

15.5

102.8

54.2

    1990

2,436

1,531

544

15.4

107.1

50.2

    1991

2,403

1,423

578

15.6

97.6

53.9

    1992

2,665

1,621

617

15.3

108.0

58.5

    1993

2,745

1,745

588

15.2

113.6

56.8

    1994

3,112

1,984

667

15.5

127.7

65.7

    1995

3,194

2,084

659

15.4

134.5

66.7

    1996

3,453

2,256

723

15.5

148.1

75.6

    1997

3,285

2,206

683

15.7

147.4

73.8

    19982

3,049

2,121

604

15.4

141.0

65.6

    19993

2,846

1,993

590

15.9

130.6

67.2

    20003

--

1,637

525

--

106.6

59.4

*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person time exposure measured in thousands of years.
2 Estimated using 2000 and 2001 data only.
3 Estimated using 2001 data only.
Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1999-2001.

 

20624 (4.17A)
Table H.53 Estimated Numbers (in Thousands) of Persons Who Began Daily Cigarette Use During the Years 1965 to 2000, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 1999-2001 NHSDAs

 

NUMBER OF INITIATES (1,000s)

MEAN AGE

AGE-SPECIFIC RATES1

YEAR

All Ages

12-17

18-25

12-17

18-25

    1965

1,510

619

792

17.9

28.9

58.5

    1966

1,885

779

958

18.1

36.0

65.0

    1967

1,733

814

794

18.1

37.3

50.5

    1968

1,963

839

991

18.2

37.6

60.1

    1969

1,815

864

842

18.0

38.0

48.8

    1970

2,055

974

987

17.8

41.9

55.3

    1971

1,983

922

929

18.1

39.0

49.9

    1972

1,992

1,015

833

17.7

42.6

43.0

    1973

2,219

1,106

998

17.9

45.9

51.1

    1974

2,143

1,047

920

17.9

43.3

46.3

    1975

2,196

1,131

933

17.7

46.9

46.1

    1976

1,874

981

743

18.1

40.9

36.0

    1977

1,922

917

862

18.2

38.6

41.1

    1978

1,896

935

837

18.0

39.9

39.2

    1979

1,952

860

939

18.4

37.9

43.3

    1980

1,721

828

728

18.2

37.6

33.0

    1981

1,673

685

841

18.6

31.8

37.3

    1982

1,489

659

725

18.6

31.0

31.8

    1983

1,531

660

733

18.4

31.2

32.1

    1984

1,508

747

635

18.3

35.8

27.9

    1985

1,495

760

605

18.3

37.0

26.8

    1986

1,461

715

637

18.5

35.7

28.3

    1987

1,449

717

608

18.9

36.7

27.3

    1988

1,344

670

551

18.4

35.4

24.8

    1989

1,411

642

628

18.5

34.6

28.6

    1990

1,409

623

637

18.9

33.5

29.9

    1991

1,407

614

567

19.4

32.6

27.1

    1992

1,446

708

553

18.5

36.6

27.0

    1993

1,487

790

538

18.1

39.7

26.8

    1994

1,628

872

591

17.9

42.8

30.1

    1995

1,819

1,005

631

18.1

48.6

32.9

    1996

1,858

1,027

644

18.1

49.4

34.4

    1997

1,888

1,098

636

18.0

52.3

34.7

    1998

1,828

1,025

628

18.3

48.5

34.6

    19992

1,574

893

559

18.0

41.9

30.6

    20003

1,393

747

538

18.3

34.5

29.3

*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person time exposure measured in thousands of years.
2 Estimated using 2000 and 2001 data only.
3 Estimated using 2001 data only.
Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1999-2001.

 

20624 (4.18A)
Table H.54 Estimated Numbers (in Thousands) of Persons Who First Used Smokeless Tobacco During the Years 1965 to 2000, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 1999-2001 NHSDAs

 

NUMBER OF INITIATES (1,000s)

MEAN AGE

AGE-SPECIFIC RATES1

YEAR

All Ages

12-17

18-25

12-17

18-25

    1965

414

188

106

16.5

8.4

5.2

    1966

486

196

191

18.0

8.8

8.6

    1967

488

206

171

17.4

9.1

7.3

    1968

482

186

172

16.8

8.0

7.0

    1969

624

295

183

16.8

12.4

7.2

    1970

608

280

179

16.9

11.6

6.8

    1971

763

252

281

18.4

10.2

10.3

    1972

791

371

248

17.3

14.9

8.9

    1973

748

374

234

16.6

14.8

8.3

    1974

853

391

259

17.2

15.5

9.2

    1975

903

473

230

17.5

18.9

8.0

    1976

1,162

572

418

17.3

23.1

14.3

    1977

1,109

547

344

16.8

22.6

11.7

    1978

1,060

572

290

16.4

24.2

9.8

    1979

1,266

595

372

18.0

26.2

12.5

    1980

1,257

603

377

17.4

27.6

12.7

    1981

1,405

732

401

17.1

34.8

13.5

    1982

1,261

686

333

16.8

33.5

11.4

    1983

1,200

619

319

17.2

30.8

11.2

    1984

1,169

647

271

17.4

32.8

9.8

    1985

1,139

644

291

17.5

33.2

10.8

    1986

1,125

569

327

18.2

29.9

12.6

    1987

979

571

218

17.2

30.8

8.7

    1988

871

451

260

17.8

24.8

10.6

    1989

933

502

217

18.2

27.9

9.1

    1990

888

485

191

18.5

26.9

8.2

    1991

930

541

206

17.9

29.5

9.1

    1992

1,015

522

276

18.7

27.6

12.5

    1993

1,030

601

260

17.3

30.7

12.0

    1994

1,015

628

246

16.8

31.0

11.5

    1995

1,098

668

275

17.7

32.3

13.1

    1996

1,129

672

263

18.2

32.1

12.7

    1997

1,023

610

276

17.6

28.7

13.4

    1998

967

584

267

18.1

27.1

12.8

    19992

978

577

244

18.6

26.4

11.5

    20003

939

543

290

18.1

24.5

13.4

*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person time exposure measured in thousands of years.
2 Estimated using 2000 and 2001 data only.
3 Estimated using 2001 data only.
Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1999-2001.

 

20624 (4.19A)
Table H.55 Estimated Numbers (in Thousands) of Persons Who First Used Cigars During the Years 1965 to 2000, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 1999-2001 NHSDAs

 

NUMBER OF INITIATES (1,000s)

MEAN AGE

AGE-SPECIFIC RATES1

YEAR

All Ages

12-17

18-25

12-17

18-25

    1965

1,233

442

649

19.0

20.1

36.6

    1966

1,306

455

679

19.6

20.7

35.6

    1967

1,347

356

776

20.3

15.9

38.8

    1968

1,337

422

741

19.3

18.4

35.7

    1969

1,190

400

646

19.3

17.0

29.9

    1970

1,362

460

714

19.4

19.2

31.9

    1971

1,293

454

654

19.5

18.6

28.1

    1972

1,483

518

730

19.8

21.0

30.4

    1973

1,403

427

756

19.8

17.0

31.3

    1974

1,567

624

750

19.2

24.8

30.7

    1975

1,264

454

648

19.9

18.0

26.0

    1976

1,312

392

714

20.4

15.6

27.9

    1977

1,466

500

804

19.7

20.1

30.8

    1978

1,419

420

762

20.7

17.2

28.8

    1979

1,393

393

704

21.5

16.5

26.2

    1980

1,424

416

776

20.5

18.1

28.3

    1981

1,175

340

631

20.7

15.1

22.8

    1982

1,135

294

667

20.8

13.3

23.9

    1983

1,150

282

619

21.2

12.8

22.2

    1984

1,268

322

724

21.0

14.8

26.2

    1985

1,186

329

612

21.2

15.4

22.5

    1986

1,188

287

716

20.6

13.7

26.9

    1987

1,310

384

634

21.5

18.8

24.2

    1988

1,283

350

659

21.3

17.7

25.6

    1989

1,444

300

752

23.3

15.5

29.7

    1990

1,517

356

783

22.4

18.5

31.8

    1991

1,510

387

740

21.8

19.9

30.9

    1992

1,610

473

768

21.3

23.8

33.0

    1993

2,111

591

920

22.3

29.0

40.9

    1994

2,452

748

1,033

21.9

35.9

47.7

    1995

2,735

949

1,109

21.4

45.2

53.5

    1996

3,632

1,295

1,384

21.7

62.1

70.7

    1997

4,114

1,605

1,427

21.4

78.1

77.7

    1998

4,335

1,708

1,380

22.3

84.9

79.5

    19992

3,864

1,555

1,158

23.0

77.4

68.6

    20003

3,070

1,331

935

21.6

65.9

57.0

*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person time exposure measured in thousands of years.
2 Estimated using 2000 and 2001 data only.
3 Estimated using 2001 data only.
Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1999-2001.

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