Table 5.
Validity and reliability outcomes
| Optimised diary | Nonoptimised diary | Difference | |
|---|---|---|---|
| Mean difference (95 % LOA) | Mean difference (95 % LOA) | Mean (p value) | |
| Validity: percentage adherence to duration | 3.09 % (−103.3 to 109.5) | −0.34 % (−131.1 to 130.5) | 3.44 % (p = 0.732) |
| Validity: percentage adherence to frequency | −72.4 % (−282.5 to 138.7) | −64.0 % (−237.1 to 109.1) | −8.43 % (p = 0.672) |
| Validity: percentage of days adhered | 2.94 % (−44.51 to 38.63) | 1.05 % (−31.05 to 33.15) | −3.99 % (p = 1.00) |
| Pearson correlations (mean difference, 95 % LOA) | Pearson correlations (mean difference, 95 % LOA) | Mean (p value) | |
| Reliability: percentage adherence to duration | r = 0.702 (−13.5 %, −69.9 to 42.9) | r = 0.622 (−5.42 %,−60.4 to 49.5) | −8.06 % (p = 0.147)a |
| Reliability: percentage adherence to frequency | r = 0.740 (−29.4 %, −147.3 to 88.5) | r = 0.788 (−14.6 %, −103.5 to 74.4) | −14.8 % (p = 0.270) |
| Reliability: percentage of days adhered | r = 0.655 (−3.42 %, −50.0 to 43.2) | r = 0.652 (−3.17 %, −49.7 to 43.4) | −0.76 % (p = 0.899) |
aEvidence of period effects (p = 0.006)