The mean rank for the Likert-scale responses used to indicate the
frequency of pesticide use showed an increase (towards an “always” response,
score = 5) from FA farm owners to non-FA farm owners to FA
farm workers to non-FA farm workers. Non-FA worker and non-FA
owner groups had the highest proportion of “always” responses whilst
FA worker and owner groups most frequently identified the “often”
response (Supplementary Table 2). Kruskal–Wallis analysis indicated
that the mean rank for non-FA workers was significantly different to
the mean ranks for the other three groups (H (tie-corrected) = 79.83,
P b 0.001) with an apparently higher frequency of pesticide use. Mean
ranks for FA owners and FA workers and non-FA owners were not
significantly different (Supplementary Table 2)