[Teenage pregnancy distribution by ethnicity in the Netherlands, 1990-1993]

To determine and compare the obstetrical results of teenage pregnancies among the main ethnic groups in the Netherlands.

Retrospective cohort study.

From the cohorts 1990-1993 of the Landelijke Verloskundige Registratie (LVR, National Obstetrical Registration) the data were analysed concerning primiparae aged 14-19 years with a single pregnancy.

During the period 1990-1993, 14.9% of the women whose parturitions were recorded in the LVR were allochtonous, of the teenage pregnancies recorded 55.2% occurred in an allochtonous population group. The numbers (percentages) of teenage pregnancies (primiparae, singles) in the various ethnic groups were 4742 (2.2%) in the autochtonous group, 3974 (25.9%) in the (Muslim) mediterraneous, 340 (7.8%) in the non-Dutch European, 588 (14.9%) in the Afro-allochtonous, 316 (9.7%) in the Hindustani, 263 (5.5%) in the Asian (excluding Hindustani and Asian Turkish) and 360 (10.4%) in the remaining ethnic groups. Hindustani and orthodox Muslims regard teenage pregnancy positively. The perinatal mortality was higher among Afro-allochtonous than among autochtonous teenagers (odds ratio: 2.89 (95% confidence interval: 1.89-4.40)), and the same was true of premature and immature parturition. Both findings occurred significantly more often in the autochtonous, Afro-allochtonous and Asian population parts than among women of the same ethnic groups aged 20-24 years. In relation to autochtonous women aged 20-24, the odds ratios for perinatal mortality and premature and immature parturition among Afro-allochtonous women were 3.64 (2.50-5.30) and 2.02 (1.59-2.55), respectively; after correction for pre- and immature parturition the odds ratio for perinatal mortality decreased to 2.35 (1.51-3.66). Low birth weight was less frequent among the Mediterraneans and more frequent among the Afro-allochtonous and Hindustani than among the autochtonous. Induced vaginal deliveries were less frequent among allochtonous teenagers, the risk of caesarean section was lower among Mediterranean teenagers but higher among Afro-allochtonous, Hindustani and other ethnic teenagers than among autochtonous teenagers. All groups of teenagers had lower frequencies of induced delivery than women of the same ethnic groups aged 20-24 years.

Teenage pregnancy in the Netherlands occurs much more often among allochtonous than among autochtonous women and is encountered most often among (Muslim) mediterranean and Afro-allochtonous groups. Obstetrical results vary greatly from one ethnic teenage group to another; they are poorest among the Afro-allochtonous, best among the Hindustani group. Among the mediterranean teenagers, they are similar to those among the autochtonous group.