Measures of self‐efficacy: Arthritis Self‐Efficacy Scale (ASES), Arthritis Self‐Efficacy Scale‐8 Item (ASES‐8), Children's Arthritis Self‐Efficacy Scale (CASE), Chronic Disease Self‐Efficacy Scale (CDSES), Parent's Arthritis Self‐Efficacy Scale (PASE), and Rheumatoid Arthritis Self‐Efficacy Scale (R