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

Values are given as numbers (n) and percentages (%). *Adjusted for country and social class. **Nonsmoker: woman who has never been smoking in her entire life. ***Adjusted for country, social class, birth weight, stress, alcohol and caffeine intake.数据以数值（n）与百分比（%）形式呈现。 * 经国家与社会阶层校正。 ** 非吸烟者定义为终生未曾吸烟的女性。 *** 经国家、社会阶层、出生体重、压力、酒精与咖啡因摄入量校正。