Journal of Neurogastroenterology and Motility : eISSN 2093-0887 / pISSN 2093-0879

Table. 1.

Baseline Data of Sample and Comparison of Irritable Bowel Syndrome Onset and No Onset Groups

Categorical variables Total sample (N = 132 922) No IBS onset (n = 131 415) IBS onset
(n = 1507)
P-value: IBS vs no IBS
Female sex 55.9% 55.7% 76.9% < 0.001
Age (yr) 44.2 (12.8) 44.2 (12.7) 43.9 (13.8) NS
Married/cohabiting 80.7% 80.8% 75.3% < 0.001
Education
2ndary only 28.7% 28.6% 31.6%
Intermediate 39.2% 39.3% 38.0% 0.041
Higher (18 yr or older) 32.1% 32.1% 30.4%
Paid work > 32 hr per wk 41.6% 41.8% 26.8% < 0.001
Low income 15.1% 15.0% 20.3% < 0.001
Unable to work through illness 2.8% 2.8% 5.4% < 0.001
3 or more allergies 8.2% 8.1% 13.0% < 0.001
Alcohol consumed 2 or more times per week 44.6% 44.7% 37.1% < 0.001
Smoking 20.5% 20.5% 19.2% 0.156
Asthma/inhaler 10.2% 10.1% 15.8% < 0.001
Chronic inflammation of throat/nasal cavity 4.9% 4.8% 9.0% < 0.001
Gallstones 3.2% 3.1% 6.0% < 0.001
Osteoarthritis 6.8% 6.8% 10.7% < 0.001
Diabetes mellitus 2.3% 2.3% 3.3% 0.012
Fibromyalgia 2.3% 2.2% 7.4% < 0.001
Chronic fatigue syndrome 1.0% 1.0% 2.2% < 0.001
Migraine 17.1% 17.1% 23.2% < 0.001
Proton Pump Inhibitor at baseline 6.5% 6.4% 13.5% < 0.001
Diclofenac 1.6% 1.6% 3.5% < 0.001
No. of prior psychiatric disorders
0 82.7% 82.8% 72.4%
1 12.5% 12.4% 17.9% < 0.001
2 or more 4.8% 4.8% 9.8%
General health perception items: I seem to get sick a little easier than others 3.7% 3.7% 9.6% < 0.001
My health is not good 9.4% 9.3% 17.8% < 0.001
4 or more GP visits in last year 1.3% 1.3% 2.3% 0.003
Not seen any health professional in last year 8.4% 8.5% 3.2% < 0.001
BMI (kg/m2) 26.02 (4.29) 26.03 (4.29) 25.72 (4.42) 0.006
Life events and difficulties score 2.6 (1.7) 2.6 (1.7) 3.0 (1.7) < 0.001
SCL somatization score 15.9 (4.2) 16.0 (4.2) 17.9 (4.9) < 0.001
PSQI score 4.09 (2.2) 4.0 (2.2) 4.7 (2.6) < 0.001
General health perceptiona –0.09 (0.6) –0.09 (0.6) –0.28 (0.6) < 0.001
Physical functiona 0.36 (0.60) 0.36 (0.60) 0.18 (0.75) < 0.001
Bodily paina 0.45 (0.79) 0.46 (0.79) 0.11 (0.90) < 0.001

aLow score indicates greater impairment.

IBS, irritable bowel syndrome; NS, not significant; GP, general practitioner; BMI, body mass index; SCL, Symptom Checklist; PSQI, Pittsburgh Sleep Quality Index.

Data are presented as % or mean (SD).

J Neurogastroenterol Motil 2022;28:442~453 https://doi.org/10.5056/jnm21041
© J Neurogastroenterol Motil