Table 4.

Number and Percent Positive Meconium Screen and Confirmation Results for Cocaine by Birth Weight Group

Birth Weight Group Grams (n)Positive ScreenGC/MS Confirmation
No. (%)No. (%)
500–1000 (191)19 (9.9)12 (6.3)
1001–1500 (292)48 (16.4)27 (9.2)
1501–2000 (475)86 (18.1)64 (13.5)
2001–2500 (1040)209 (20.1)179 (17.2)
2501–3000 (1574)206 (13.1)173 (11.0)
3001–3500 (2676)164 (6.1)109 (4.1)
3501–4000 (1673)64 (3.8)28 (1.7)
>4000 (608)13 (2.1)2 (.3)
Total (8529)809 (9.4)594 (7.0)