Table 3.

Results of IV probit model: determinants of health and household income

Samples	Adults with children		Adults without children
Dependent variables	Poor self-assessed health (PSAH)	Logged real household income	Poor self-assessed health (PSAH)	Logged real household income
Variables
Logged real household income	−0.297		−0.257
	(0.301)		(0.255)
Gender (male = 1)	0.0153	0.0399*	−0.00134	0.0613***
	(0.0919)	(0.0236)	(0.0755)	(0.0230)
Age	0.0102	0.00394**	0.0142***	−0.00235
	(0.00648)	(0.00153)	(0.00474)	(0.00146)
Moderate or severe mental distress	0.771***	0.00772	0.723***	−0.100***
	(0.112)	(0.0234)	(0.0949)	(0.0254)
Moderate mental distress at an early stage of the COVID-19 pandemic	−0.124	−0.247***	−0.639***	0.0468
	(0.177)	(0.0410)	(0.152)	(0.0460)
Low health satisfaction	1.650***	−0.123***	1.715***	−0.145***
	(0.137)	(0.0466)	(0.112)	(0.0436)
Had or have severe COVID-19 symptom	−0.165	−0.137**	0.0703	−0.121*
	(0.235)	(0.0642)	(0.199)	(0.0735)
Sleep duration on weekdays			−0.0284	−0.0265**
			(0.0348)	(0.0109)
Time trend	0.0902	0.221***	−0.533	0.985***
	(0.0830)	(0.0107)	(0.342)	(0.0630)
Time trend squared			0.116**	−0.156***
			(0.0588)	(0.0121)
IV: Single parent or spouseless		−0.520***		−0.311***
		(0.0459)		(0.0253)
IV: Spouse’s non-work		−0.188***		−0.212***
		(0.0342)		(0.0475)
IV: Respondent’s non-work		−0.129***
		(0.0342)
Constant	−1.885*	2.967***	−1.182	2.674***
	(0.976)	(0.0740)	(0.730)	(0.128)
lnσ2	−0.611***		−0.453***
	(0.0135)		(0.0124)
Athrho	0.108		0.0687
	(0.174)		(0.169)
Weak instrument robust tests	AR test: chi2(3) = 5.02		AR test: chi2(2) = 2.24
	Prob > chi2 = 0.1703		Prob > chi2 = 0.3263
N	2724	2724	3263	3263

AR: Anderson–Rubin test. Standard errors in parentheses.

*** p < 0.01, ** p < 0.05, * p < 0.1