Table 2.
Factors associated with IBS in human medical students in bivariate analysis.
| Variables | Irritable Bowel Syndrome | p* | |
|---|---|---|---|
| No (n = 340) | Yes (n = 69) | ||
| n (%) | n (%) | ||
| Age (years)**** | 21 (19–24) | 20 (18–22) | 0.003*** |
| Sex | 0.011 | ||
| Female | 217 (79.8) | 55 (20.2) | |
| Male | 123 (89.8) | 14 (10.2) | |
| Academic year | 0.014 | ||
| 1st year | 40 (66.7) | 20 (33.3) | |
| 2nd year | 43 (84.3) | 8 (15.7) | |
| 3rd year | 75 (82.4) | 16 (17.6) | |
| 4th year | 52 (86.7) | 8 (13.3) | |
| 5th year | 33 (82.5) | 7 (17.5) | |
| 6th year | 34 (87.2) | 5 (12.8) | |
| 7th year | 57 (91.9) | 5 (8.1) | |
| Frequent alcohol consumption | 0.834 | ||
| No | 313 (83.2) | 63 (16.8) | |
| Yes | 27 (81.8) | 6 (18.2) | |
| Frequent tobacco use | 0.749** | ||
| No | 325 (82.9) | 67 (17.1) | |
| Yes | 15 (88.2) | 2 (11.8) | |
| Exhaustion from career activities | 0.848 | ||
| Never/almost never | 13 (86.7) | 2 (13.3) | |
| Sometimes | 178 (82.0) | 39 (18.0) | |
| Almost always/always | 143 (83.6) | 69 (16.4) | |
| Regular exercise | 0.302 | ||
| No | 168 (84.9) | 30 (15.2) | |
| Yes | 166 (81.0) | 39 (19.0) | |
| Parents’ condition | 0.364 | ||
| Living together | 259 (83.8) | 50 (16.2) | |
| Single | 75 (79.8) | 19 (20.2) | |
| Family member diagnosed with IBS | 0.299 | ||
| No | 304 (83.5) | 60 (16.5) | |
| Yes | 30 (76.9) | 9 (23.1) | |
| Current housing | 0.542 | ||
| Parents’ house | 289 (82.3) | 62 (17.7) | |
| Own house | 21 (91.3) | 2 (8.7) | |
| Apartment rental | 24 (82.8) | 5 (17.2) | |
| Level of depression | <0.001 | ||
| Normal | 111 (96.5) | 4 (3.5) | |
| Mild | 61 (89.7) | 7 (10.3) | |
| Moderate | 84 (75.7) | 27 (24.3) | |
| Severe | 34 (68.0) | 16 (32.0) | |
| Extremely severe | 47 (75.8) | 15 (24.2) | |
| Level of anxiety | <0.001 | ||
| Normal | 108 (94.7) | 6 (5.3) | |
| Mild | 67 (93.1) | 5 (6.94) | |
| Moderate | 52 (78.8) | 14 (21.2) | |
| Severe | 33 (70.2) | 14 (29.8) | |
| Extremely severe | 78 (72.2) | 30 (27.8) | |
| Level of stress | 0.092 | ||
| Normal | 135 (89.4) | 16 (10.6) | |
| Mild | 54 (79.4) | 14 (20.6) | |
| Moderate | 73 (82.0) | 16 (18.0) | |
| Severe | 59 (76.7) | 18 (23.4) | |
| Extremely severe | 16 (76.2) | 5 (23.8) | |
| Hours of sleep | 0.177 | ||
| <8 h/day | 256 (81.53) | 58 (18.5) | |
| ≥8 h/day | 78 (87.6) | 11 (12.4) | |
| BMI (Body Mass Index) | 0.217 | ||
| Normal | 225 (80.9) | 53 (19.1) | |
| Overweight | 94 (87.0) | 14 (13.0) | |
| Obesity | 13 (92.9) | 1 (7.1) | |
| Eating behavior disorder | <0.001 | ||
| No | 214 (88.8) | 27 (11.2) | |
| Yes | 121 (74.2) | 42 (25.8) | |
* P-value of categorical variables calculated with the Chi-Square test.
** P-value of categorical variables calculated with Fisher’s exact test.
*** P-value of categorical-numerical variables calculated with the Mann–Whitney U test.
**** Median – interquartile range.