Table 2.
Appendiceal diameter and frequency of visualisation of the appendix
| Set S | Set M | Set L | |||||
| Reader A | Reader B | Reader A | Reader B | Reader A | Reader B | ||
| Entire study group | Diametera | 8.4±0.3 | 8.3±0.3 | 8.2±0.4 | 8.2±0.3 | 8.4±0.3 | 8.3±0.3 |
| Visualised appendixb | 135/152 (89) | 128/152 (84) | 142/152 (93) | 137/152 (90) | 144/152 (95) | 138/152 (91) | |
| Patients with definite acute appendicitis | Diametera | 12.0±0.6 | 11.4±0.5 | 11.9±0.5 | 11.3±0.5 | 12.3±0.5 | 11.4±0.4 |
| Visualised appendixb | 44/46 (96) | 44/46 (96) | 45/46 (98) | 45/46 (98) | 46/46 (100) | 46/46 (100) | |
| Patients without definite acute appendicitis | Diametera | 6.5±0.3 | 6.7±0.2 | 6.3±0.2 | 6.6±0.2 | 6.3±0.2 | 6.4±0.2 |
| Visualised appendixb | 91/106 (86) | 84/106 (79) | 97/106 (92) | 92/106 (87) | 98/106 (93) | 92/106 (87) | |
a
Data are mean diameter in millimetres ± standard error of the mean.
b
Data in parentheses correspond to percentages.