International Journal for Equity in Health

Table 2 Differences in health status of different income groups and inequality indexes of self-reported health and mental health among Chinese adults: The 2020 China COVID-19 Survey (n = 8448)

From: Income-related health inequality among Chinese adults during the COVID-19 pandemic: evidence based on an online survey

	Re-scaled latent SRH (\( {h}_i^{\ast } \))			Mental health
	Mean ± SD^a	CI	CCI	Mean ± SD^a	CI	CCI
All		−0.0477^***	−0.0920^***		0.0204^***	0.0433^***
Income (low)	0.52 ± 0.13			10.23 ± 4.65
Income (middle)	0.49 ± 0.13			10.38 ± 4.80
Income (high)	0.43 ± 0.13			11.32 ± 5.42
Female		−0.0524^***	− 0.1014^***		0.0154^***	0.0316^***
Income (low)	0.52 ± 0.13			9.94 ± 4.42
Income (middle)	0.49 ± 0.14			10.17 ± 4.72
Income (high)	0.43 ± 0.13			10.80 ± 5.24
Male		−0.0472^***	−0.0899^***		0.0270^***	0.0596^***
Income (low)	0.51 ± 0.12			10.62 ± 4.91
Income (middle)	0.49 ± 0.12			10.62 ± 4.89
Income (high)	0.42 ± 0.13			12.01 ± 5.58

Income is defined as income tertiles, with low (1st tertile), middle (2nd tertile), and high (3rd tertile)
SRH self-reported health, CI Concentration Index, CCI corrected CI
^*** p < 0.01
^a Since we use the continuous re-scaled latent SRH and mental health score, we directly report their mean values

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