Table 2.

The association of socioeconomic, occupational, psychological and lifestyle factors with number of pain sites.

	Men (n = 3,615 observations)								Women (n = 3,842 observations)
	Univariate models				Multivariable model				Univariate models				Multivariable model
	RR	95% CI	P-value		RR	95% CI	P-value		RR	95% CI	P-value		RR	95% CI	P-value
Agea	1.03	1.00; 1.06	0.039		1.05	1.01; 1.08	0.005		1.07	1.04; 1.10	< 0.001		1.06	1.04; 1.10	< 0.001
Low education	1.03	0.99; 1.07	0.211		1.01	0.97; 1.05	0.638		1.01	0.97; 1.04	0.736		1.00	0.96; 1.03	0.770
Living alone	1.01	0.97; 1.05	0.708		1.00	0.95; 1.04	0.824		0.96	0.92; 0.99	0.036		0.95	0.91; 0.99	0.014
Low household income	1.08	1.05; 1.12	< 0.001		1.05	1.01; 1.08	0.012		1.05	1.02; 1.08	0.002		1.02	0.99; 1.05	0.297
Unemployment	1.06	1.01; 1.12	0.013		1.13	1.06; 1.19	< 0.001		1.05	1.01; 1.09	0.013		1.10	1.05; 1.15	< 0.001
Any occupational exposure	1.12	1.09; 1.16	< 0.001		1.17	1.12; 1.22	< 0.001		1.05	1.02; 1.08	< 0.001		1.10	1.06; 1.13	< 0.001
Physical inactivity	1.06	1.03; 1.10	< 0.001		1.02	0.99; 1.06	0.229		1.04	1.01; 1.07	0.021		1.02	0.99; 1.05	0.275
Regular smoking	1.10	1.06; 1.14	< 0.001		1.06	1.02; 1.11	0.001		1.08	1.04; 1.11	< 0.001		1.06	1.02; 1.10	0.002
Regular drinking	1.01	0.98; 1.05	0.499		1.01	0.97; 1.05	0.666		1.06	1.02; 1.10	0.004		1.03	0.99; 1.07	0.094
Overweight	1.04	1.01; 1.08	0.020		1.03	0.99; 1.07	0.080		1.10	1.07; 1.14	< 0.001		1.08	1.05; 1.11	< 0.001
Psychiatric symptoms	1.24	1.19; 1.29	< 0.001		1.21	1.17; 1.26	< 0.001		1.20	1.16; 1.23	< 0.001		1.19	1.15; 1.22	< 0.001

Rate ratios (RRs) for number of pain sites from generalized estimating equation (GEE) models. Bold denotes statistical significance.

CI, Wald's confidence interval; RR, Rate ratio.

^aTime points compared with each other: age 46 vs. age 31.