Table 1 Frequency of positive responses to ROME II questions and the factor loadings for the five factors identified using factor analysis*
Rome II questionnaire | Positive | Factor 1 | Factor 2 | Factor 3 | Factor 4 | Factor 5 | ||
|---|---|---|---|---|---|---|---|---|
Question number | FGID category | Question | Responses N% | Pelvic floor dysfunction | Bowel dysfunction | Abdominal discomfort | Self-induced vomiting | Oesophageal discomfort |
38-2 | Anorectal | Unable to empty | 98 53.0 | .765 | .136 | .107 | .137 | .104 |
24-10 | Bowel disorder | Blocked sensation | 96 51.9 | .753 | .221 | .160 | .004 | .009 |
38-3 | Anorectal | Difficulty relaxing | 61 33.0 | .720 | -.045 | .058 | .148 | .068 |
24-7 | Bowel disorder | Incomplete emptying | 112 60.5 | .705 | .110 | .177 | -.053 | -.003 |
38-1 | Anorectal | Straining | 114 61.6 | .652 | .110 | .221 | .052 | .065 |
24-11 | Bowel disorder | Need to press | 57 30.8 | .489 | .361 | -.242 | -.028 | -.007 |
20 | Bowel disorder | Abdominal pain or discomfort | 107 57.8 | .091 | .870 | .226 | .132 | .012 |
21 | Bowel disorder | Abdominal pain resolves after bowel movement | 83 44.9 | .183 | .779 | .350 | .049 | .224 |
23 | Bowel disorder | Change in stool form when discomfort starts | 79 42.7 | .279 | .744 | .200 | .180 | .137 |
12-2 | Gastro-duodenal | Bloating sensation of upper abdomen | 61 33.0 | .199 | .079 | .848 | -.011 | .039 |
10 | Gastro-duodenal | Pain/discomfort upper abdomen | 95 51.4 | .209 | .277 | .747 | .030 | .235 |
13 | Gastro-duodenal | Pain stop after bowel movement | 55 29.7 | .116 | .307 | .711 | -.015 | -.038 |
18 | Gastro-duodenal | Make self vomit | 85 45.9 | .071 | .093 | .000 | .963 | .089 |
17 | Gastro-duodenal | Vomiting episodes | 89 48.1 | .048 | .129 | -027 | .963 | .098 |
8 | Esophageal | Heartburn | 65 35.1 | -.012 | .098 | .092 | .101 | .872 |
6 | Esophogeal | Chest pain | 67 36.2 | .064 | .069 | .028 | .042 | .869 |
15 | Gastro-duodenal | Burp/belch | 79 42.7 | .213 | .113 | .065 | .374 | .417 |