Table 2.
Trimester | n2 | Median3 | Mean | Std Dev | Min | Max |
---|---|---|---|---|---|---|
First | 305 | 171 | 199 | 130 | 15 | 712 |
Second | 366 | 181 | 227 | 206 | 6 | 2580 |
Third | 343 | 179 | 222 | 174 | 4 | 1330 |
Abbreviations: ARCH=Archive for Research in Child Health
Number of specimens; some women contributed more than one specimen per trimester
Kruskall-Walllis test for equality of medians shows no significant difference by trimester (p=.50)