Table 4.

Regression analysis summary for flexibility at BL, sex, age, childcare status, marital status, night work status, and insomnia status predicting scores on flexibility at follow-up (FU; N = 1,286).

Variable	β	95% CI for β	p
Flexibility at BL	0.64	0.592, 0.684	0.018
Sex (♂ = 1, ♀ = 2)	−0.03	−0.087, 0.011	0.111
Age	0.03	−0.033, 0.085	0.311
Child care statusa
Not childcare responsibility at BL, but at FU	−0.01	−0.088, 0.074	0.839
Childcare responsibility at BL, but not at FU	−0.05	−0.098, −0.006	0.024
Childcare responsibility at both and FU	0.00	−0.071, 0.071	0.909
Marital statusb
Not living with partner at BL but at FU	−0.07	−0.158, −0.017	0.020
Living with partner at BL but not at FU	0.01	−0.062, 0.066	0.953
Living with partner at both BL and FU	−0.00	−0.082, 0.066	0.861
Night work statusc
Not night work at BL but at FU	0.17	0.113, 0.250	0.010
Night work at BL but not at FU	−0.09	−0.124, −0.040	0.016
Night work at both BL and FU	0.18	0.129, 0.236	0.006
Insomnia statusd
Not insomnia at BL but at FU	−0.01	−0.055, 032	0.576
Insomnia at BL but not at FU	0.03	−0.088, 114	0.121
Insomnia at both BL and FU	0.02	−0.028, 082	0.336

β, standardized regression coefficient, R² = 0.539, CMIN/DF = 4.68, CFI = 0.95, RMSEA = 0.05 (90% CI = 0.049, 0.058).

^aNot having childcare responsibility at neither BL nor FU as reference category.

^bNot living with partner at neither BL nor FU as reference category.

^cNot having night work at neither BL nor FU as reference category.

^dNot insomnia at neither BL nor FU as reference category.