Table 2: Baseline maternal characteristics of pregnant women using insulin glargine versus NPH among the studies selected for meta-analysis.

Maternal
characteristic
Number of studies  Insulin glargine  NPH Mean
difference*
95% confidence limits
Unadjusted mean/eventsNumber of
Patients
Unadjusted mean/eventsNumber of
Patients
Lower limitUpper limit

Maternal age (yrs)730.328930.5322−0.49−1.870.89
Duration of diabetes (yrs)710.225010.32781.140.282.00
 Type 1 diabetes515.411714.61331.670.822.52
 Pregestational diabetes36.11406.41460.69−0.962.35
Prepregnancy weight (kg)482.015480.11901.53−2.215.27
Prepregnancy BMI (kg/m2)331.014029.7139−0.46−1.810.90

*Mean difference: insulin glargine versus NPH insulin.