The risk of @entity3152 in XXXX from different ethnic groups.

@entity1 @entity1949 @entity3152
OBJECTIVE: To examine whether routinely measured variables explained the increased risk of @entity3152 in some UK ethnic groups. DESIGN: Cross sectional study of deliveries recorded in the @entity1 Health Record System. SETTING: North Birmingham, UK. POPULATION: All North Birmingham @entity1 delivering singletons, 1994-1997 inclusive. METHOD: Logistic regression. MAIN OUTCOME MEASURES: Odds ratio (OR) and 95% confidence interval (CI) for @entity3152 , defined as less than 37 weeks, less than 34 weeks and less than 28 weeks, unadjusted and adjusted for maternal age, an area-based socio-economic status measure, and marital status, year of birth, fetal sex and past obstetric history. RESULTS: For Afro-Caribbean @entity1 , the ORs (95% CIs) were: for delivery less than 37 weeks, 1.44 (1.26-1.64) unadjusted and 1.22 (1.07-1.41) adjusted; for delivery less than 34 weeks, 1.55 (1.25-1.92) unadjusted and 1.29 (1.02-1.61) adjusted; for delivery less than 28 weeks, 1.66 (1.08-2.55) unadjusted and 1.32 (0.84-2.06) adjusted. For African @entity1 , the risk of delivery less than 37 weeks was not significantly raised; for delivery less than 34 weeks, the OR (95% CI) was 1.88 (0.99-3.58) unadjusted and 1.78 (0.93-3.40) adjusted; for delivery less than 28 weeks, the OR (95% CI) was 4.02 (1.60-10.12) unadjusted and 4.10 (1.66-10.16) adjusted. In Afro-Caribbeans, @entity1949 and marital status explained the differences between the unadjusted and adjusted ORs. There was a linear relation between @entity1949 and @entity3152 for all ethnic groups, except for Asians. CONCLUSIONS: Factors associated with @entity1949 and marital status explain about half of the excess of preterm births in Afro-Caribbeans, but not Africans. The risk of @entity3152 might not be related to @entity1949 in Asians.
