Table 4.
Capture-recapture estimates of total numbers of cases, sensitivities of each source, incidence estimates and 95% confidence intervals
| Chapman's formula | Chao's lower bound estimator | |||||||
|---|---|---|---|---|---|---|---|---|
| Total number of cases in population | Sensitivity lab % | Sensitivity notifications % | Incidence (per 100,000) |
Total number of cases in population | Sensitivity lab% | Sensitivity notifications % | Incidence (per 100,000) | |
| Hepatitis A | 1852 (1665-2040) |
30 (28-34) |
32 (29-35) |
52.8 (47.5-58.2) |
1858 (1669-2047) |
30 (27-34) |
32 (29-35) |
53.0 (47.6-58.4) |
| Hepatitis B | ||||||||
| IgM anti-HBc | 1831 (1399-2263) |
21 (17-27) |
12 (10-16) |
52.2 (39.9-64.5) |
1989 (1502-2477) |
19 (15-25) |
11 (9-15) |
56.7 (42.8-70.6) |
| Hepatitis C | ||||||||
| dialysis & gastroenterology omitted | 2081 (1901-2260) |
84 (78-92) |
4 (4-5) |
59.3 (54.2-64.5) |
11359 (8997-13721) |
15 (13-20) |
1 (1-1) |
323.9 (256.6-391.3) |
| Brucellosis | ||||||||
| WHO criteria | 362 (299-425) |
42 (36-51) |
32 (27-39) |
10.3 (8.5-12.1) |
371 (304-439) |
41 (34-50) |
31 (26-38) |
10.6 (8.7-12.5) |
| Agglutination < 1/80 | 545 (468-622) |
56 (49-66) |
21 (19-25) |
15.5 (13.4-17.7) |
688 (572-804) |
45 (38-54) |
17 (14-20) |
19.6 (16.3-22.9) |
| Syphilis | ||||||||
| WHO criteria | 331 (283-378) |
61 (53-71) |
26 (23-30) |
9.4 (8.1-10.8) |
396 (327-465) |
51 (43-61) |
22 (19-26) |
11.3 (9.3-13.3) |
| notified lab cases not meeting WHO criteria included | 274 (250-298) |
79 73-87) |
31 (29-34) |
7.8 (7.1-8.5) |
338 (293-382) |
64 (57-74) |
25 (23-29) |
9.6 (8.4-10.9) |