Table 1.

Subject characteristics at the time of study entry

Characteristic	Men (n=81)			Women (n = 84)
	CLBP (n=35)	Control (n=46)	p-value	CLBP (n = 36)	Control (n = 48)	p-value
Age (yr)	70 ± 3.9	69.6 ± 5.1	0.657	69.7 ± 3.6	68.6 ± 2.6	0.135
Weight (kg)	66.9 ± 7.4	68.4 ± 7.5	0.411	54.7 ± 8.4	54.3 ± 6.6	0.776
Height (cm)	167.3 ± 4.7	168.1 ± 4.8	0.483	154.4 ± 5.1	156.9 ± 5.0	0.020*
BMI (kg/m2)	23.9 ± 2.4	24.2 ± 2.2	0.617	22.9 ± 2.8	22.0 ± 2.5	0.130

Values are presented as mean±standard deviation.

CLBP, chronic low back pain; BMI, body mass index.

^*p<0.05, statistically significant differences.