Table 4.
Reliability or validity of adherence measurement.
| Treatment | Adherence measurement | Psychometric evaluation | Psychometric evaluation results |
|---|---|---|---|
| Therapeutic exercise | Self-reported exercise diary [41] | Internal consistency | α = 0.90 |
| Correctness of Exercise Performance (COEP) scale [42] | Inter-observer agreement | Kappa coefficient of 0.88 | |
| Physical activity | PASE questionnaire [35] | Validated scale | r = 0.75[43] |
| CHAMPS questionnaire [44] | Reliability analyses | α = 0.72 | |
| Calendar format diary [38] | Validated instrument | r = 0.77[45] | |
| Sense Wear accelerometer [46,47] | Validated tool for estimating energy expenditure during daily activities for people with OA | Intraclass correlation coefficient = 0.72 | |
| Actiwatch-Score [48] | Reliability and preliminary criterion validity | r = 0.98 | |
| Pacing subscale of the Chronic Pain Coping Inventory (CPCI) [49] | Reliability (test-retest, internal consistency) and validity (construct, discriminant) | “Good” – data not reported | |
| Education | Self-reported question – agreement with extent of completion of assigned treatment (1 = not at all to 5 = as advised) [50] | Internal consistency | α = 0.78 |
| Diet | 110-item Block Food Frequency Questionnaire (FFQ) [30] | Validated instrument | r = 0.5–0.6[51] |