Table 5. Demographics of the individuals within and outside a dermal symptom cluster, Adelaide, Australia (June 2007–August 2008a) (n = 1235).
| Demographic characteristics | People in cluster n = 107 (%) |
People with sporadic dermal symptoms n = 166 (%) |
People with no dermal symptoms n = 962 (%) |
Risk ratiob (95% CI) |
P value |
| Sex | |||||
| Male | 49 (46) | 76 (46) | 499 (52) | 1.00 | — |
| Female | 58 (54) | 90 (54) | 463 (48) | 1.21 (0.83, 1.77) | 0.33 |
| Age | |||||
| <5 years | 24 (22) | 34 (21) | 74 (8) | 3.39 (2.04, 5.62) | <0.001 |
| 5 to 15 years | 50 (47) | 74 (45) | 364 (38) | 1.91 (1.31, 2.77) | 0.001 |
| >15 years | 33 (31) | 58 (35) | 524 (55) | 1.00 | — |
| Attending educational institution | |||||
| Child care/kindergarten | 18 (17) | 28 (17) | 52 (5) | 2.37 (1.68, 4.62) | 0.002 |
| Attending primary school or higher educational institution | 52 (49) | 83 (50) | 440 (46) | 1.37 (0.93, 2.02) | 0.11 |
| Not attending any educational institution | 37 (35) | 55 (33) | 470 (49) | 1.00 | — |
aCluster was defined as >1 person in a household having dermal symptoms during the current or previous week.
bRisk ratios for being in a cluster vs not being in cluster (people with sporadic and no dermal symptoms combined) using binary regression, adjusted for clustered family design.