Table 2. Demographic features of pain and no pain group stratified by gender.

	men			Women
	no pain (N = 309)	New or persistent pain (N = 271)	p	no pain (N = 309)	New or persistent pain (N = 436)	p
Mean (SD)
Age(yr)	59.62±8.02	60.35±8.43	0.289	59.08±8.25	61.40±8.66	<0.001
Body mass index (kg/m2)	23.81±3.00	24.06±3.03	0.318	24.22±3.15	25.02±3.46	0.001
Fat Mass(kg)	13.72±5.85	14.10±5.59	0.428	18.69±5.56	19.93±6.25	0.005
Lean Mass(kg)	50.53±5.88	50.48±6.02	0.923	36.55±3.63	36.20±3.86	0.211
Fat/muscle ratio	0.27±0.11	0.28±0.11	0.362	0.51±0.14	0.55±0.16	0.001
Percent
Married	95.1	95.9	0.644	82.8	78.4	0.136
Education	44.0	39.1	0.233	19.4	14.9	0.105
Obesity	14.9	14.8	0.966	16.5	26.4	0.001
Alcohol	72.2	64.2	0.040	24.9	24.5	0.906
Smoking	34.7	32.1	0.502	1.6	1.4	0.787
Exercise	45.0	42.1	0.480	41.1	35.1	0.095
Diabetes mellitus	20.2	21.1	0.786	17.8	19.4	0.582
Hypertension	17.8	18.5	0.839	16.8	20.9	0.167
Manual work	20.4	18.1	0.482	40.8	33.7	0.049
Hand or knee arthritis	3.2	5.9	0.121	11.3	17.7	0.017

Continuous variables were tested using Student’s t-test, and categorical variables were tested using Pearson’s chi-square test.