Table 1.
Descriptive characteristics of hepatitis B cohorts
| Variable | HBV | HBsAg+ | Acute | Chronic active | Carrier | Immune | Tayside population in 1996 |
|---|---|---|---|---|---|---|---|
| Number (%) | 633 | 275 (43) | 78 (12) | 48 (8) | 184 (29) | 400 (63) | 395900 |
| Female, n (%) | 242 (38) | 115 (43) | 21 (27) | 15 (31) | 86 (47) | 143 (36) | 206023 (52) |
| Male, n (%) | 391 (62) | 160 (57) | 57 (73) | 33 (69) | 98 (53) | 257 (64) | 189877 (48) |
| Mean age (±s.d.) (years) | 42·6 ± 18·6 | 41·2 ± 17·9 | 38·2 ± 17·6 | 33·6 ± 18·5 | 43·4 ± 17·3 | 43·3 ± 19·0 | 39·2 ± 23·2 |
| Carstairs deprivation category, n (%) | |||||||
| 1 (most affluent) | 22 (3) | 7 (3) | 2 (3) | 1 (2) | 4 (2) | 16 (4) | 39594 (10) |
| 2 | 53 (8) | 24 (9) | 5 (6) | 3 (6) | 19 (10) | 31 (8) | 66783 (17) |
| 3 | 118 (19) | 60 (22) | 17 (22) | 14 (29) | 35 (19) | 68 (17) | 95355 (24) |
| 4 | 67 (11) | 35 (13) | 9 (12) | 5 (10) | 23 (13) | 38 (10) | 72205 (18) |
| 5 | 106 (17) | 50 (18) | 14 (18) | 6 (13) | 37 (20) | 63 (16) | 45211 (12) |
| 6 | 159 (25) | 56 (20) | 16 (21) | 9 (19) | 39 (21) | 111 (28) | 71276 (18) |
| 7 (least affluent) | 98 (15) | 38 (14) | 13 (17) | 9 (19) | 24 (13) | 68 (17) | 359 (0·1) |
| Missing | 10 (2) | 5 (2) | 2 (3) | 1 (2) | 3 (2) | 5 (1) | |
HBV, Hepatitis B virus; HBsAg + , HBV surface antigen positive; s.d., standard deviation.