Table. Characteristics of patients and disease manifestations in comprehensive case–control study of protective and risk factors for Buruli ulcer, southeastern Australia*.
| Characteristics | Cases, n = 245 | Controls, n = 481 |
|---|---|---|
| Age group, y | ||
| 18–39 | 35 (14) | 38 (8) |
| 40–59 | 68 (28) | 125 (26) |
| 60–79 | 123 (50) | 278 (58) |
|
>80 |
19 (8) |
40 (8) |
| Sex | ||
| F | 104 (42) | 266 (55) |
| M |
141 (58) |
215 (45) |
| Employment status† | ||
| Employed | 124 (51) | 211 (44) |
| Unpaid employment, unemployed | 19 (8) | 18 (4) |
| Retired |
100 (41) |
249 (52) |
| Notification dates | ||
| Summer, Dec–Feb | 26 (11) | NA |
| Autumn, Mar–May | 18 (7) | NA |
| Winter, Jun–Aug | 107 (44) | NA |
| Spring, Sep–Nov |
94 (38) |
NA |
| Duration of symptoms before diagnosis, wk | ||
| Median (IQR) | 5 (3–12) | NA |
| Missing data |
21 (9) |
NA |
| Days from notification to questionnaire completion | ||
| Median (IQR) |
56 (38–90) |
NA |
| Insect bite/wound/injury to area before ulcer developed | ||
| Yes | 99 (40) | NA |
| No | 42 (17) | NA |
| Unsure | 88 (36) | NA |
| Missing data |
16 (7) |
NA |
| Type of bite/wound/injury in area before ulcer developed, n = 99 | ||
| Insect bite | 51 (52) | NA |
| Wound/injury | 30 (30) | NA |
| Mixed | 6 (6) | NA |
| Other, unsure/missing data |
12 (12) |
NA |
| Time from wound/bite to ulcer, if yes, n = 87 | ||
| Median, weeks (IQR) | 6 (3–13) | NA |
*Values are no. (%) except as indicated. IQR, interquartile range; NA, not applicable. †Unpaid employment included students and persons with home duties.