Table 3.

General characteristics of the distribution of NRF9·2 scores

		The score of NRF9·2*
Vairable	n	Median	25th percentile, 75th percentile	P value†
Total	656	39·93	32·44, 47·84	–
Gender
Male	396	38·83	31·83, 46·25	0·004
Female	260	41·37	33·53, 50·72
Age
< 50	99	38·42	29·85, 47·78	0·350
50–65	407	39·91	32·49, 48·10
> 65	150	41·04	34·19, 47·04
Central obesity (WC)
Yes	290	39·88	32·60, 47·96	0·6
No	366	40·04	31·71, 47·33
Central obesity (WHR)
Yes	298	39·68	32·62, 47·92	0·9
No	358	40·49	31·62, 47·87
Overweight (BMI, WGOC)				0·7
Yes	285	39·90	32·75, 48·16
No	371	40·30	31·97, 48·16
Residation				0·067
Urban	559	40·43	32·58, 48·06
Village	97	37·32	31·55, 44·03
Personal monthly income				0·199
< 2000 RMB	152	38·26	32·37, 45·42
2000–5000 RMB	399	39·91	31·74, 48·20
> 5000 RMB	105	41·77	33·62, 48·99
Educational level				< 0·0001
< 6 years	80	38·42	37·76, 55·66
6–12 years	424	38·51	31·38, 45·39
> 12 years	152	43·33	36·30, 51·78
Occupation				0·13
Manual	98	37·43	31·69, 45·33
Professional	82	41·61	33·45, 49·58
Retired	332	40·23	33·11, 48·09
Others	144	39·03	30·92, 47·21
Marriage				0·84
Yes	601	39·94	32·46, 47·82
Others	55	39·16	32·29, 49·53
Family numbers				0·27
≤ 4	422	39·16	31·97, 47·50
> 4	234	41·00	32·49, 48·13

WC, waist circumference; WHR, waist:hip ratio WGOC, Working Group on Obesity in China.

^*Values were presented as median (25th percentile, 75th percentile).

^†The general characteristics of the distribution of NRF9.2 scores was tested by Kruskal–Wallis.