Missing data
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Missing data for all domain scales were checked. PETS scoring does make allowances for some missing item data (that is, non-response or a response of ‘not applicable’ to an item). A domain scale score can still be calculated if >50% of the items within the domain are answered by the participant. This is made possible through prorated scoring that takes the mean of the non-missing items and assigns a raw score followed by standardisation to the 0–100 scale metric. The domain-level missing data are reported in the Results section (Descriptive statistics of mean standardised PETS scores
