Table 1. Characteristics of the different groups among women with CPP and/or IBS in Olmsted County, Minnesota, residents.

	Neither (n=225)	IBS alone (n= 42)	Overlap of IBS & CPP (n= 27)	CPP alone (n= 40)	p-value†
Age, mean ± SD (yrs)	54 ± 10	52 ± 11	49 ± 11	48 ± 8	<0.001
BMI, mean ± SD	26.5 ± 5.0	28.2 ± 6.9	26.3 ± 4.1	26.2 ± 5.0	0.57
Median SSC score (range)	0.5(0.0,3.2)	0.7(0.1,1.7)	0.8(0.2,3.1)	0.6 (0.0,1.7)	<0.001
Current smoker, N (%)	30 (13%)	8 (19%)	5 (19%)	8 (20%)	0.47
Alcohol user, N (%)	83 (37 %)	16 (38%)	12 (44%)	12 (30%)	0.68
Marital Status
Married	184 (82%)	32 (76%)	21 (78%)	32 (80%)	0.83
Education level					0.07
≤ high school	64 (29%)	15 (36%)	6 (22%)	20 (50%)
High school/college	149 (66%)	24 (57%)	18 (68%)	19 (48%)
≥College graduate	11 (5%)	3 (7%)	2 (7%)	0 (0)
Hysterectomy	58 (26%)	13 (31%)	4 (15%)	4 (10%)	0.09
Changing BM menstrual cycle	13 (6%)	7 (17%)	9 (33%)	15 (38%)	<0.001
Missing work due to illness, N (%)	64(28%)	22(52%)	11(41%)	22(55%)	<0.001
Physician visits more than 5 times, N (%)	7(3%)	4(10%)	4(15%)	3(8%)	<0.01
For aches or pains in stomach or belly	4(2%)	3(7%)	6(22%)	1(2%)	<0.001
For bowel problems	2(1%)	4 (10%)	3(11%)	0	<0.001
Hospitalization in the last 4 years	59(26%)	12(29%)	7(26%)	9(22%)	0.95
Aspirin, N (%)	63 (28%)	25 (60%)	14 (52%)	16 (40%)	<0.001
Acetaminophen, N (%)	65 (19%)	21 (50%)	14 (52%)	19 (48%)	<0.01
NSAIDs, N (%)	62 (28%)	14 (33%)	11 (41%)	16 (40%)	0.27

^†Based on a univariate test for association of symptom status subgroup with characteristics using the Kruskall-Wallis test for continuous characteristics (age, BMI, SSC score) and the Chi-square test (or Fisher's Exact test) for discrete characteristics.

IBS, irritable bowel syndrome; SSC, somatic symptom checklist; BM, bowel movements; NSAIDs non steroidal anti-inflammatory drugs