Population characteristics of 128 boys with congenital cryptorchidism and 2,368 healthy boys from a joint Danish-Finnish birth cohort study.

Values are given as numbers (n) and percentages (%).
*All variables adjusted for country, maternal age, smoking, alcohol consumption and social class. Furthermore, adjusted for parity, twinning, mode of delivery, presentation, birth weight (except WGA) and gestational age (except WGA), mutually.
**SGA: small for gestational age, AGA: appropriate for gestational age, LGA: large for gestational age.

数据以例数（n）与百分比（%）的形式呈现。
*所有变量均针对国家、母亲年龄、吸烟情况、饮酒习惯及社会阶层进行了校正；此外，还同时针对产次、双胎妊娠、分娩方式、胎先露、出生体重（WGA除外）及胎龄（WGA除外）开展了多变量校正。
**SGA（small for gestational age，小于胎龄儿）、AGA（appropriate for gestational age，适于胎龄儿）与LGA（large for gestational age，大于胎龄儿）。