Table 4.

Association between frequency of long working hours (FLWH) for the past 6 months and stress response scores (model 2)*†

Stress responses	FLWH	Model 2*† (final model)
		Mean (SE)	P value	ηp²‡	Multiple comparison, p value§
Vigour	I.Zero¶	2.27 (0.01)	0.000	0.004	ref
	II. Once	2.20 (0.03)
	III. Twice	2.16 (0.03)
	IV. Three times	2.13 (0.04)
	V.Four times	2.09 (0.04)
	VI. Five/six times	1.93 (0.06)
Irritability	I.Zero	2.03 (0.01)	0.000	0.004	ref
	II. Once	2.10 (0.02)
	III. Twice	2.10 (0.03)
	IV. Three times	2.17 (0.04)
	V.Four times	2.20 (0.04)
	VI. Five/six times	2.31 (0.05)
Anxiety	I.Zero	1.88 (0.01)	0.000	0.009	ref
	II. Once	1.98 (0.02)
	III. Twice	2.04 (0.03)
	IV. Three times	2.11 (0.03)
	V.Four times	2.17 (0.04)
	VI. Five/six times	2.18 (0.05)
Depression	I.Zero	1.78 (0.01)	0.000	0.002	ref
	II. Once	1.82 (0.02)
	III. Twice	1.85 (0.03)
	IV. Three times	1.89 (0.03)
	V.Four times	1.91 (0.04)
	VI. Five/six times	1.97 (0.05)
Fatigue	I.Zero	2.04 (0.01)	0.000	0.004	ref
	II. Once	2.06 (0.03)
	III. Twice	2.09 (0.03)
	IV. Three times	2.19 (0.04)
	V.Four times	2.24 (0.04)
	VI. Five/six times	2.38 (0.06)
Physical complaint	I.Zero	1.75 (0.01)	0.343	0.000	ref
	II. Once	1.76 (0.02)
	III. Twice	1.76 (0.02)
	IV. Three times	1.81 (0.03)
	V.Four times	1.77 (0.03)
	VI. Five/six times	1.80 (0.04)

*Crude model and model 1 are showed in online supplemental materials.

†Model 2 was adjusted for adjusted for sex, age, job type, employment type (regular employee or others), work style (shift work or no shift work), worksite and experience or no experience with COVID-19 emergencies in April 2020.

‡Partial eta squared.

§Bonferroni method.

¶Number of participants in each category is as follows: I: 2,454; II: 9,793; III: 2,287; IV: 424; V: 185.

ref, reference; SE, standard error.