TABLE 1.
Baseline Characteristics of Participating Households Consuming Untreated Rainwater: Adelaide and Mount Barker, Australia, 2007
| Households in Active Groupa (n = 152), No. Persons (%) | Households in Sham Groupb (n = 148), No. Persons (%) | |
| Participants | 698 (51.6) | 654 (48.4) |
| Male | 345 (49.4) | 341 (52.1) |
| Age, y | ||
| < 5 | 95 (13.6) | 90 (13.8) |
| 6–15 | 270 (38.7) | 258 (39.4) |
| 16–24 | 34 (4.9) | 15 (2.3) |
| 25–44 | 198 (28.4) | 197 (30.1) |
| 45–64 | 97 (13.9) | 93 (14.2) |
| ≥ 65 | 4 (0.6) | 1 (0.2) |
| Attendance at child care (children aged ≤ 5 y) | 44 (6.3) | 56 (8.6) |
| Educational attainment among adults | ||
| Primary school | 3 (1.0) | 4 (1.4) |
| Secondary school | 99 (31.7) | 97 (32.8) |
| Trade school | 38 (12.1) | 36 (12.2) |
| Tertiary school | 150 (47.9) | 138 (46.6) |
| Employed adultsc | 243 (77.6) | 251 (84.8) |
| Location | ||
| Metropolitan Adelaide | 117 (77.0) | 109 (73.6) |
| Mount Barker | 35 (23.0) | 39 (26.4) |
Note. Percentages may not total to 100% because of missing data or rounding.
a
The active group received water treatment units containing filters for their rainwater.
b
The sham group received water treatment units that were identical to the active units, except that they did not contain filters. Investigators and participants were blinded to the identity of the active and sham households.
c
Information on work status missing for 44 adults: 23 from the active group and 21 from the sham group.