Table 1.
Variables | Age group (years) | |||||
---|---|---|---|---|---|---|
<1 | 1–9 | 10–29 | 30–49 | 50–69 | ⩾70 | |
Total case numbers | 3004 | 7441 | 703 | 672 | 737 | 707 |
Annual incidence (per 100 000 person-years) | 524·7 | 110·8 | 3·4 | 3·0 | 5·4 | 14·8 |
In-hospital mortality | 0 (0·00) | 1 (0·01) | 3 (0·43) | 0 (0·00) | 12 (1·63) | 18 (2·55) |
Medical cost (US$) | 481 (346–682) | 455 (330–623) | 455 (308–739) | 619 (375–1210) | 853 (487–1789) | 1038 (598–2220) |
Admission duration (days) | 5 (4–7) | 5 (4–7) | 5 (3–6) | 5 (4–8) | 7 (4–11·5) | 8 (5–14) |
Infection sites, case numbers | ||||||
Gastroenteritis (n = 12 315) | 2902 (99·6) | 7265 (97·6) | 650 (92·5) | 542 (80·7) | 513 (69·6) | 443 (62·7) |
Septicaemia (n = 838) | 88 (2·9) | 161 (2·2) | 47 (6·7) | 107 (15·9) | 193 (26·2) | 242 (34·2) |
Osteomyelitis (n = 25) | 0 (0·0) | 0 (0·0) | 2 (0·28) | 8 (1·2) | 12 (1·6) | 3 (0·42) |
Pneumonia (n = 15) | 0 (0·0) | 1 (0·01) | 2 (0·28) | 4 (0·60) | 2 (0·27) | 6 (0·85) |
Arthritis (n = 14) | 0 (0·0) | 1 (0·01) | 2 (0·28) | 3 (0·45) | 6 (0·81) | 2 (0·28) |
Meningitis (n = 5) | 3 (0·1) | 1 (0·01) | 0 (0·0) | 0 (0·0) | 0 (0·0) | 1 (0·14) |
Other sites of infection (n = 52) | 11 (0·37) | 12 (0·16) | 0 (0·0) | 8 (1·2) | 11 (1·5) | 10 (1·41) |
Data are expressed as case number (%) or median value (interquartile range).