Table 3.
Reporting pyramids
| Community | Presenting to general practice | Stools sent for routine laboratory test* | Positive by routine laboratory test† | Reported to national surveillance | |
|---|---|---|---|---|---|
| All infectious intestinal disease | |||||
| Rate per 1000 person years (95% CI) | 194 (181 to 208) | 33.1 (29.4 to 37.5) | 8.8 (8.3 to 9.3) | 2.1 (1.9 to 2.4) | 1.5 (1.3 to 1.7) |
| Ratio to next column (95% CI) | 5.8 (5.4 to 6.3) | 3.8 (3.6 to 4.0) | 4.3 (3.8 to 4.7) | 1.4 (1.3 to 1.7) | |
| Ratio to final column (sensitivity bound) | 136 (93 to 197) | 23.2 (17.3 to 31.2) | 6.2 (4.8 to 7.8) | 1.4 (1.3 to 1.7) | 1.0 |
| % of community disease reported | 17.1 | 4.5 | 1.1 | 0.7 | |
| Campylobacter | |||||
| Rate per 1000 person years (95% CI) | 8.7 (6.1 to 12.3) | 4.1 (3.3 to 5.1) | 1.7 (1.4 to 2.0) | 1.1 (0.9 to 1.3) | |
| Ratio to next column (95% CI) | 2.1 (1.5 to 3.0) | 2.4 (2.0 to 2.9) | 1.5 (1.2 to 2.0) | ||
| Ratio to final column (sensitivity bound) | 7.6 (3.6 to 17.4) | 3.6 (2.4 to 5.8) | 1.5 (1.2 to 2.0) | 1.0 | |
| % of community disease reported | 47.1 | 19.5 | 7.9 | ||
| Salmonella | |||||
| Rate per 1000 person years (95% CI) | 2.2 (1.1 to 4.3) | 1.6 (1.2 to 2.1) | 0.8 (0.7 to 1.0) | 0.7 (0.5 to 0.9) | |
| Ratio to next column (95% CI) | 1.4 (1.0 to 2.8) | 1.9 (1.4 to 2.5) | 1.2 (1.0 to 1.7) | ||
| Ratio to final column (sensitivity bound) | 3.2 (1.4 to 12.0) | 2.3 (1.4 to 4.3) | 1.2 (1.0 to 1.7) | 1.0 | |
| % of community disease reported | 72.7 | 36.4 | 31.8 | ||
| Rotavirus | |||||
| Rate per 1000 person years (95% CI) | 7.1 (4.8 to 10.4) | 2.3 (1.8 to 2.9) | 0.3 (0.2 to 0.5) | 0.21 (0.13 to 0.34) | |
| Ratio to next column (95% CI) | 3.1 (2.1 to 4.6) | 7.5 (5.1 to 11.2) | 1.5 (1.0 to 2.6) | ||
| Ratio to final column (sensitivity bound) | 35.0 (10.7 to 133.9) | 11.3 (5.1 to 29.1) | 1.5 (1.0 to 2.6) | 1.0 | |
| % of community disease reported | 32.4 | 4.2 | 3.0 | ||
| Small round structured viruses | |||||
| Rate per 1000 person years (95% CI) | 12.5 (9.4 to 16.7) | 1.99 (1.5 to 2.7) | 0.012 (0.003 to 0.09) | 0.012 (0.003 to 0.09) | |
| Ratio to next column (95% CI) | 6.3 (4.6 to 8.6) | 172.0 (24.1 to 1228) | 1.4 (1.3 to 1.7) | ||
| Ratio to final column (sensitivity bound) | 1562 (140 to 17 424) | 248 (30.4 to 2026) | 1.4 (1.3 to 1.7) | 1.0 | |
| % of community disease reported | 15.9 | 0.9 | 0.06 | ||
*
The proportion of stools sent for routine laboratory tests cannot be estimated for individual microbiological organisms.
†
Ratio of number of positive for small round structured virus to number reported to national surveillance is assumed the same as for all infectious intestinal disease.