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. 2022 Jul 1;10:934524. doi: 10.3389/fpubh.2022.934524

Table 6.

Heterogeneity analysis.

Different generations Older generation of migrant workers New generation of migrant workers
Variable Overwork (50 h) Overwork (60 h) Working hours Overwork (50 h) Overwork (60 h) Working hours
URRBMI × year −0.225*** −0.176*** −9.025*** 0.097 0.006 −3.023
(0.062) (0.052) (3.001) (0.110) (0.101) (6.267)
Constant term −23.515 165.142
(71.655) (102.246)
Control variable Controlled Controlled Controlled Controlled Controlled Controlled
Sample size 2206 2206 2206 881 881 881
Pseudo R2/R2 0.058 0.049 0.074 0.104 0.094 0.181
Different regions Eastern region Central and Western regions
Variable Overwork (50 h) Overwork (60 h) Working hours Overwork (50 h) Overwork (60 h) Working hours
URRBMI × year −0.091 −0.087 −7.884* −0.193*** −0.210*** −15.928**
(0.081) (0.068) (4.238) (0.060) (0.059) (5.400)
Constant term −14.055 219.672
(37.446) (162.790)
Control variable Controlled Controlled Controlled Controlled Controlled Controlled
Sample size 2,074 2,074 2,074 1,013 1,013 1,013
Pseudo R2/R2 0.085 0.042 0.061 0.075 0.085 0.156
Different industries The second industry The third industry
Variable Overwork (50 h) Overwork (60 h) Working hours Overwork (50 h) Overwork (60 h) Working hours
URRBMI × year −0.182** −0.540** −10.506** −0.150** −0.230*** −8.293**
(0.076) (0.224) (4.758) (0.068) (0.078) (3.140)
Constant term 76.654 61.846
(108.162) (14.901)
Control variable Controlled Controlled Controlled Controlled Controlled Controlled
Sample size 2,037 2,037 2,037 1,050 1,050 1,050
Pseudo R2/R2 0.052 0.069 0.073 0.079 0.064 0.148
Different levels of education Junior high school the following Junior high school above
Variable Overwork (50 h) Overwork (60 h) Working hours Overwork (50 h) Overwork (60 h) Working hours
URRBMI × year −0.131** −0.142*** −7.148** −0.209** −0.155* −13.120**
(0.062) (0.053) (3.487) (0.100) (0.087) (6.481)
Constant term 3.096 −74.103
(85.668) (124.297)
Control variable Controlled Controlled Controlled Controlled Controlled Controlled
Sample size 2,315 2,315 2,315 772 772 772
Pseudo R2/R2 0.078 0.059 0.108 0.070 0.074 0.235

Standard errors are in parentheses; *, ** and *** means passing the test at the significance levels of 10%, 5%, and 1%, respectively. Except for labor time, all other reports are probit marginal effect.