Self-reported frequency of handwashing among pet and non-pet owners in different situations: results of four surveys of the general adult population in Germany

Study limitations include that due to unknown true compliance, over- and underestimations have to be inferred. Yet, that the only substantial difference between pet and non-pet owners pertained to "After touching animals" suggests such effects. While pet owners obviously adjust for task difficulty, the likely residual overestimation should be reduced by measures using script-based covert recall or survey items with response categories constructed to better resemble subjective compliance ratios.