Observational Study
Copyright ©The Author(s) 2015.
World J Gastroenterol. Mar 28, 2015; 21(12): 3628-3635
Published online Mar 28, 2015. doi: 10.3748/wjg.v21.i12.3628
Table 1 Prevalence of irritable bowel syndrome and its subtypes and contributory foodstuffs n (%)
VariableWith IBS1 (n = 163/813)
IBS163 (20.0)
IBS subtypes
IBS constipation60 (36.8)
IBS diarrhea25 (15.4)
IBS mixed73 (44.8)
IBS unknown5 (3.06)
Foods that trigger hypersensitivity2
Yes334 (20.9)
No129 (79.1)
Beans8 (23.5)
Milk4 (11.8)
Sweets1 (2.94)
Fatty food (beef and fast foods)4 (11.8)
Coffee5 (14.7)
Carbonated beverages1 (2.94)
Spicy foods5 (14.7)
Fruits (banana, watermelon)2 (5.88)
Vegetables (tomato)2 (5.88)
Parsley2 (5.88)
Table 2 Distribution of baseline socio-demographic and behavioral characteristics and factors associated with irritable bowel syndrome prevalence n (%)
VariableTotal(n = 813)With IBS(n = 163)P valueUnadjusted
Adjusted1
OR95%CIOR95%CI
Sex
Female488 (60.0)122 (25.0)< 0.0011.001.00
Male325 (40.0)41 (12.6)0.43a0.29-0.640.40a0.26-0.61
Age
≤ 22 yr539 (66.3)118 (21.9)0.0391.001.00
> 22 yr274 (33.7)45 (16.4)0.70.48-1.020.53a0.35-0.79
Faculty
Sciences and humanities113 (13.9)22 (19.5)0.9751.001.00
Medical sciences2431 (53.0)89 (20.6)0.980.53-1.850.800.45-1.42
Engineering140 (17.2)27 (19.3)1.070.64-1.811.060.53-2.11
Business and economics129 (15.9)25 (19.4)0.990.52-1.800.940.47-1.89
Living condition
With family517 (63.6)75 (14.5)< 0.0011.001.00
School dormitory or private house296 (36.4)88 (29.7)2.49a1.76-3.542.84a1.94-4.16
Family income (US$)
500-1200241 (29.6)28 (11.6)< 0.0011.001.00
1300-2000369 (45.4)64 (17.3)1.600.99-2.571.86a1.13-3.06
> 2000203 (25.0)71 (35.0)4.09a2.51-6.685.72a3.36-9.71
Cigarette smoking
Not current716 (88.1)144 (20.1)0.5141.001.00
Current97 (11.9)19 (19.6)0.970.56-1.600.950.43-1.72
Regular physical activity
No474 (58.3)113 (23.8)0.0011.001.00
Yes339 (41.7)50 (14.7)0.55a0.38-0.800.53a0.35-0.79
Family history of IBS
No754 (92.7)154 (20.4)0.4011.001.00
Yes59 (7.3)9 (15.3)0.700.34-1.460.490.22-1.08