Table 5.
Frequencies and amounts of prenatal drug use by group
| Cocaine |
Non-cocaine |
F * | ||
|---|---|---|---|---|
| Heavy (n=82) | Light (n=76) | (n=161) | ||
| Cigarettes/day | ||||
| Month prior | 15.4±13 | 11.4±10 | 5.5±10 | 23.9a,b |
| Trimester 1 | 14.6±13 | 9.5±8 | 4.3±9 | 29.4c |
| Trimester 2 | 12.1±12 | 8.3±8 | 3.3±8 | 27.7c |
| Trimester 3 | 10.6±12 | 7.6±7 | 3.0±7 | 22.8a,b |
| Alcohol drinks/day | ||||
| Month prior | 4.6±7 | 3.1±3 | 1.1±2 | 23.3a,b |
| Trimester 1 | 4.3±6 | 2.4±3 | 0.6±1 | 30.1c |
| Trimester 2 | 2.8±5 | 1.6±3 | 0.3±1 | 20.5c |
| Trimester 3 | 2.4±5 | 1.3±2 | 0.3±1 | 16.4c |
| Alcohol days/week | ||||
| Month prior | 2.1±2 | 2.7±2 | 1.5±2 | 7.7b |
| Trimester 1 | 2.2±2 | 2.3±2 | 0.9±2 | 18.8a,b |
| Trimester 2 | 1.5±2 | 1.7±2 | 0.5±2 | 25.8a,b |
| Trimester 3 | 2.0±2 | 1.8±3 | 0.7±2 | 11.9a,b |
| Marijuana joints/day | ||||
| Month prior | 0.9±2 | 2.6±1 | 1.3±2 | 4.1a |
| Trimester 1 | 0.8±2 | 0.5±2 | 0.1±1 | 8.9a |
| Trimester 2 | 0.7±1 | 0.3±1 | 0.6±0.4 | 15.4a,d |
| Trimester 3 | 0.5±1 | 0.2±1 | 0.04±0.2 | 15.1a,d |
| Marijuana days/week | ||||
| Month prior | 1.6±2 | 1.3±2 | 0.3±1 | 19.4a,b |
| Trimester 1 | 1.4±2 | 1.6±2 | 0.2±1 | 15.7a,b |
| Trimester 2 | 1.1±2 | 0.6±2 | 0.1±1 | 15.2a,b |
| Trimester 3 | 1.0±2 | 0.8±2 | 0.1±1 | 11.9a,b |
| Cocaine | t | p | ||
| Heavy (n=82) | Light (n=76) | |||
| Cocaine rocks/day | ||||
| Month prior | 7.8±11 | 1.9±2 | −4.5 | 0.0001 |
| Trimester 1 | 8.1±13 | 1.8±4 | −4.1 | 0.0001 |
| Trimester 2 | 6.6±11 | 1.2±2 | −3.9 | 0.0001 |
| Trimester 3 | 4.3±7 | 0.9±1 | −4.0 | 0.0001 |
| Cocaine days/week | ||||
| Month prior | 2.0±2 | 2.0±2 | −0.02 | 0.99 |
| Trimester 1 | 1.7±2 | 1.8±2 | 0.14 | 0.89 |
| Trimester 2 | 1.8±2 | 1.6±2 | −0.81 | 0.41 |
| Trimester 3 | 2.4±2 | 2.2±2 | −0.55 | 0.58 |
*
All comparisons are significant at the <0.05 level.
a
Non-cocaine<heavy.
b
Non-cocaine < light.
c
Non-cocaine<light<heavy.
d
Light<heavy.