Note: CIs, confidence intervals;
ORs, odds ratios.
† Evening Chronotype: 4-11 score; Neutral Chronotype:
12-17 score; Morning Chronotype: 18-25 score.
⁎ P <0.05, ⁎⁎ P
<0.01, ⁎⁎⁎ P <0.001.
a Model 1: did
not adjust for the covariates.
b Model 2: additionally included age, sex, education,
annual incomes, education, passive smoking, physical activity, cause of
infertility, living children, and infertility treatment time.
c Model 3: additionally included frequency of
insomnia, nocturnal wake frequency, daytime napping, social jetlag, and
nighttime sleep duration.
d The trend test was performed by assigning medians to
three categories as a continuous variable in the models.
Table 3 . Actor and partner effects of chronotype on depressive
symptoms in infertile couples (n = 397 couples)