Table 2.

Distribution difference of characteristics between urban residents and rural-to-urban migrants

	Urban residents (n = 11,300)		Rural-to-urban migrants (n = 2819)
	N or M ± SD or P50[P25, P75]	%	N or M ± SD or P50[P25, P75]	%	F/X 2	P
Gender					0.0048	0.95
Female	6180	50.26	1569	51.54
Male	5452	49.74	1379	48.46
Age	43.7 ± 13.75		36.71 ± 12.18			< 0.001**
15~ 24	1278	11.31	463	16.42
25~ 34	1736	15.36	900	31.93
35~ 44	2461	21.78	688	24.41
45~ 59	4281	37.88	641	22.74
60~	1544	13.66	127	4.51
Marital status					68.96	< 0.001**
Unmarried	1909	16.89	554	19.65
Married, living together	8808	77.95	2216	78.61
divorce, widowed	583	5.16	49	1.74
Education Level					687.30	< 0.001**
Primary or less	1099	9.73	676	23.98
Junior middle school	6586	58.28	1796	63.71
High school or above	3615	31.99	347	12.31
Medical insurance					39.15	< 0.001**
Yes	9576	84.74	2252	79.89
No	1724	15.26	567	20.11
Job					442.62	< 0.001**
Yes	5914	52.34	2094	74.28
No	5386	47.66	725	25.72
Income in the past year	20,000 [4,45,000]		24,000 [6,42,000]		2.376	0.018*
Satisfied with income					40.67	< 0.001**
Satisfactory	2984	26.41	610	21.64
Fair	3699	32.73	1078	38.24
Unsatisfactory	4617	40.86	1131	40.12
Self-assessment of social status	4.57 ± 1.80		4.00 ± 1.78		227.33	< 0.001**
Self-reported health					18.46	< 0.001**
Health	7058	62.46	1869	66.30
Fair	3382	29.93	786	27.88
Unwell	860	7.61	164	5.82
Survey area					279.68	< 0.001**
East	4796	42.44	1690	59.95
Central	3940	34.87	706	25.04
west	2561	22.69	423	15.01

** significance P < 0.001; * P < 0.05