The response rates for the cleaners and comparison group were 74% and 34% respectively. Compared with the reference group the cleaners had a higher proportion of women, Māori and Pacific people. They also smoked more and were older. All analyses were therefore controlled for age, sex, ethnicity and smokers.
Cleaners had an almost two-fold increased risk of current eczema (i.e. eczema in the past three months) compared to the reference group (14.8% versus 10%; adjusted OR (aOR) = 1.92, p