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. Author manuscript; available in PMC: 2018 Apr 19.
Published in final edited form as: Am J Drug Alcohol Abuse. 2014 Apr 10;40(3):230–239. doi: 10.3109/00952990.2014.891038

Table 1.

Descriptive statistics of sample characteristics

Descriptive summary Total n = 461 Males n = 237 Females n = 224 χ2 or t
Age M (SD) 36.7 (13.58) 35.5 (13.55) 37.9 (13.53) −1.918
Racial background n (%) 1.829
 White 396 (85.9) 205 (86.5) 191 (85.3)
 Black 358 (8.3) 21 (8.8) 17 (7.5)
 Hispanic/Latino 11 (2.4) 4 (1.7) 7 (3.1)
 Asian 5 (1.1) 2 (0.8) 3 (1.3)
 More than one race 11 (2.4) 5 (2.1) 6 (2.7)
Marital status n (%) 15.562**
 Never married 202 (43.8) 121 (51.1) 81 (36.2)
 Married/cohabitating 154 (33.4) 69 (29.1) 85 (37.9)
 Divorced 78 (16.9) 39 (16.5) 39 (17.4)
 Separated 18 (3.9) 7 (3.0) 11 (4.9)
 Widowed 9 (2.0) 1 (0.4) 8 (3.6)
Education
 At least part college n (%) 342 (74.2) 176 (74.3) 166 (74.1) 0.001
Smoking history M (SD)
 Cigarettes per day 16.6 (9.95) 17.8 (11.17) 15.4 (8.30) 2.627**
 Age of first use 17.4 (3.78) 17.6 (3.84) 17.2 (3.71) 1.297
Psychiatric disorders n (%)
 No disorder 257 (55.9) 150 (63.3) 107 (48.0) 37.26
 Major depressive disorder 19 (4.1) 11 (4.6) 8 (3.8)
 Dysthymic disorder 9 (2.0) 3 (1.3) 6 (2.7)
 Bipolar I/II 2 (0.4) 2 (0.6) 0 (0)
 Depressive disorder NOS 2 (0.4) 1 (0.4) 1 (0.4)
 Alcohol use disorder 20 (4.4) 13 (5.5) 7 (3.1)
 Cannabis use disorder 14 (3.0) 9 (3.8) 5 (2.2)
 Other SUDs 4 (0.8) 1 (0.4) 3 (1.2)
 Panic disorder w/wo Agor. 10 (1.9) 5 (2.1) 5 (2.2)
 Agoraphobia 1 (0.2) 1 (0.4) 0 (0)
 Social phobia 48 (10.4) 19 (8.0) 29 (13.0)
 Specific phobia 19 (4.2) 8 (3.3) 11 (4.8)
 OCD 5 (1.1) 2 (0.8) 3 (1.3)
 PTSD 13 (2.8) 5 (2.1) 8 (3.6)
 GAD 23 (5.0) 5 (2.1) 18 (8.1)
 Anxiety disorder NOS 7 (1.5) 1 (0.4) 6 (2.7)
 Other 7 (1.5) 1 (0.4) 6 (2.6)
Key study variables Total Males Females χ2 or t

Panic attack history n (%) 220 (47.7) 92 (38.8) 128 (57.1) 15.499**
Medical problems n (%) 138 (29.9) 72 (30.4) 66 (29.5) 0.046
Cannabis use/30 days n (%) 256 (55.5) 139 (58.6) 117 (52.2) 1.921
AUDIT total score M (SD) 6.2 (6.02) 6.8 (5.84) 5.5 (6.15) 2.398*
IDAS-Depression M (SD) 41.0 (13.12) 39.5 (11.82) 42.6 (14.22) −2.541*
PANAS-NA M (SD) 19.1 (7.08) 18.2 (6.49) 20.1 (7.62) −2.962**
RFS-NA M (SD) 3.5 (0.81) 3.3 (0.78) 3.7 (0.76) −5.815**
FTND M (SD) 5.2 (2.29) 5.2 (2.31) 5.1 (2.27) 0.232
BCS-Total M (SD) 25.0 (11.03) 22.6 (10.42) 27.5 (11.11) −4.899**
AIS M (SD) 45.0 (10.75) 43.2 (10.83) 47.0 (10.32) −3.929**
Expired CO at baseline 19.1 (11.81) 19.9 (11.50) 18.6 (12.14) 1.165
*

p<.05

**

p<.01