Association between being born preterm (<37 weeks) and school performance.

*Adjusted for ethnicity, housing, crowding, and maternal education, socio-economic group, car ownership and age.
†Further adjusted for gender, parity, weight, length and head circumference at birth.
‡Further adjusted for mode of delivery, maternal hypertension and pyrexia.
Measures are OR (95% CI) for preterm infants vs. term infants.

* 按种族、住房状况、居住拥挤程度、母亲受教育水平、社会经济组别、汽车保有量及年龄进行校正。
† 进一步校正性别、产次、出生时体重、身长及头围。
‡ 进一步校正分娩方式、母亲高血压及发热情况。
所报告指标为早产儿相较于足月儿的比值比（Odds Ratio, OR）及95%置信区间（95% Confidence Interval, CI）。