Table 1.

Comparison of CP and SP groups on demographics and pain intensity, frequency, duration, and interference

	CP (n = 88)	SP (n = 87)	Statistical test	P
Demographics
Gender (% male)	68	71	χ2 = 0.19	0.74
Race (% white)	85	81	χ2 = 0.70	0.43
Age (mean age, ± SD)	36	33	t = −1.98	0.049
Pain characteristicsa
Current pain intensity (mean intensity, ± SD)	3.2 ± 0.9	2.2 ± 1.0	F = 51.85	<0.001
Pain frequencyb (mean frequency, ± SD)	4.0 ± 1.0	2.7 ± 1.0	F = 74.62	<0.001
Typical pain durationb (mean duration, ± SD)	3.9 ± 1.0	3.0 ± 1.2	F = 25.73	<0.001
Typical pain intensityb (mean intensity, ± SD)	3.4 ± 0.7	2.4 ± 1.0	F = 57.18	<0.001
Typical pain interferenceb (mean interference, ± SD)	3.3 ± 1.1	2.2 ± 1.1	F = 48.92	<0.001

CP = Chronic pain, SP = Some pain.

^aControlling for age.

^bPast week.