and dairy farming (n Z193, 17.4%) the second most
frequent. Mixed farms with sheep and dairy farming totaled
236 (21.3%) and other combinations, 161 (14.5%). The mean
number of animal units per farm was 133 (sd 6.2).
Demographics are shown in Table 1. The farmer group was
older than the non-farmer group (p < 0.0001), with fewer
farmers in the youngest age category and a higher number in
the oldest category, but a relatively even distribution in
between. When stratified by gender, smoking rates were
significantly lower among farmers than among non-farmers.
This was true for both current smoking (pZ 0.026 for men
and < 0.0001 for women) and for any history of smoking
(pZ 0.005 for men and p < 0.0001 for women).