Table 3.

Multivariate analysis of factors associated with low FSW typology

Factor	Low vs. middle/high tiers AOR, 95%CI	P value
Age group in years
16-19	1.00 (Reference)	--
20-29	0.71 (0.59, 0.86)	< 0.001
30-39	1.26 (0.99, 1.61)	0.06
40-	1.81 (1.33, 2.46)	< 0.001
Education
Primary or less	6.45 (5.10, 8.15)	< 0.001
Junior high school	2.54 (2.06, 3.13)	< 0.001
Senior high school and above	1.0 (Reference)	--
Marital status
Never married	1.0 (Reference)	--
Married	1.86 (1.58, 2.18)	< 0.001
Separated/divorced/widowed	2.15 (1.54, 3.01)	< 0.001
Ethnicity
Han	1.0 (Reference)	--
Minority	1.29 (1.08, 1.55)	0.005
Household registration (hukou)
Local resident	2.11 (1.86, 2.40)	< 0.001
Not local resident	1.0 (Reference)	--

AOR adjusted odds ratio, CI confidence interval.