Mental disorders among workers in the healthcare industry: 2014 national health insurance data

Table 3 Characteristics of employees before and after propensity score matching among study population

Variables	All insured employees		Workers in healthcare industry		Reference group		Standardized difference^a
Variables	(n = 13,869,767)	%	(n = 752,181)	%	(n = 3,008,724)	%	pre-match	post-match
Age							− 0.328	0.000
< 20	100,403	0.72	2578	0.34	10,312	0.34
20–29	2,424,686	17.48	218,899	29.10	875,596	29.10
30–39	4,151,253	29.93	239,610	31.86	958,440	31.86
40–49	3,942,566	28.43	180,096	23.94	720,384	23.94
50–59	2,721,879	19.62	93,849	12.48	375,396	12.48
≥60	528,980	3.81	17,149	2.28	68,596	2.28
Mean	40.4 ± 10.8		37.0 ± 10.5		37.1 ± 10.5
Income level							−0.056	0.000
Q1	3,471,369	25.03	163,190	21.70	652,760	21.70
Q2	3,440,340	24.80	247,161	32.86	988,644	32.86
Q3	3,483,627	25.12	186,525	24.80	746,100	24.80
Q4	3,474,431	25.05	155,305	20.65	621,220	20.65
Sex							−0.056	0.000
Male	8,535,138	61.54	196,957	26.18	787,828	26.18
Female	5,334,629	38.46	555,224	73.82	2,220,896	73.82

^aStandardized differences in age was calculated by categorical variables of age group

ISSN: 2052-4374