Table 4.
The ratio is the women’s cotinine levels divided by their weighted number of self-reported cigarettes. This ratio shows how much of urinary cotinine a cigarette produces according to women’s self-reports. This table shows the means and the standard deviation for each classification in each trimester.
| Category | Trimester 1 | Trimester 2 | Trimester 3 | |||
|---|---|---|---|---|---|---|
| Mean ratio | SD ratio | Mean ratio | SD ratio | Mean ratio | SD ratio | |
| Over reporter | - | - | 16.24 | - | - | - |
| Accurate reporter | 309.79 | 251.84 | 278.01 | 153.03 | 207.21 | 152.77 |
| Under reporter | 1005.53 | 2486.65 | 577.44 | 579.49 | 895.17 | 1002.75 |
| Extreme under reporter | 7829.90 | 21275.18 | 4740.71 | 10678.09 | 2169.90 | 3019.95 |
| Total | 2883.77 | 11869.41 | 1434.85 | 5272.85 | 1085.01 | 1941.18 |