Table 2.

Uric acid levels and presence of pre-eclampsia with progressive adjustment of logistic regression models.

Progressive adjustment	Cases	Controls	OR (95% CI)a	p-value
Unadjusted	1,365	1,886	1.31 (1.22, 1.41)	< 0.001
Plus maternal age	1,365	1,886	1.30 (1.21, 1.40)	< 0.001
Plus gestational age	1,352	1,886	1.19 (1.10, 1.30)	< 0.001
Plus race	1,340	1,863	1.20 (1.10, 1.30)	< 0.001
Plus recruitment place	1,340	1,863	1.21 (1.11, 1.32)	< 0.001
Plus recruitment date	1,340	1,863	1.23 (1.12, 1.34)	< 0.001
Plus smoking	1,328	1,854	1.23 (1.13, 1.35)	< 0.001
Plus multiple pregnancy	1,328	1,854	1.23 (1.13, 1.35)	< 0.001
Plus low SES	1,304	1,815	1.21 (1.11, 1.33)	< 0.001
Plus infections	1,301	1,812	1.21 (1.11, 1.33)	< 0.001

SES, Socioeconomic status.

^aOR indicates the change in odds of being a case for each 1 SD increase in uric acid levels.