Table 2.

The predictive variables of capillary glucose and proteinuria, collected at repeated time points in antenatal care in the study population of 58 899 nulliparous women.

Predictive variables at first antenatal visit	Without preeclampsia n = 56,323		With preeclampsia n = 2576		P-value
	N		N
Capillary glucose ≥ 9 mmol/L* %	1 842	3.3	135	5.3	< 0.001
Proteinuria dipstick† %					< 0.001
1+	5 779	10.5	666	26.0
≥ 2+	745	1.4	1 140	44.4

*Dichotomous time-varying predictor: if ≥ 9 mmol/L at any antenatal visit, then positive.

^†Categorical time-varying predictor, if 1+ or ≥ 2+, at any antenatal visit, otherwise 0.