Table 1.
Demographic data and constipation symptoms of the constipated patients and healthy subjects
| Treatment group (n = 33) | Control group (healthy subjects) (n = 22) | P value | |
| Sex (female) | 72.70% | 80% | 0.74 |
| Female to male ratio | 2.67:1 | 04:01 | |
| Ethnicity (Chinese) | 100% | 100% | |
| Age (yr ± SD) | 49.9 ± 12 | 50.8 ± 14 | 0.82 |
| Duration of constipation (yr ± SD) | 20.3 ± 15 | - | |
| Complete spontaneous bowel motion per week | 1.9 ± 1 | - | |
| (mean ± SD) | |||
| Passage of hard stool | 72.70% | - | |
| Incomplete evacuation | 84.80% | - | |
| Straining | 90.90% | - |