Figure 4
adapted from the Pet Attachment Questionnaire by Zilcha-Mano et al. (2011) 30. Note that only pet owners were able to provide responses to questions on pet attachment, and hence only they were included in these analyses. Similar conclusions were obtained in sensitivity analyses using Poisson count and zero-inflated Poisson models for duration of physical activity per week (data not shown).
Analysis of effect modification by overall pet attachment score, which was calculated as the average score of n = 8 questions
