Table 2. Results of Meta-regression Analysis.
| Characteristic | Multivariate model of all studies | ||
|---|---|---|---|
| β (SE) | Wald statistic | P value | |
| Intercept | −1.12 (0.80) | 1.93 | .17 |
| Wisdom component | |||
| Emotional regulation (vs prosocial behaviors) | −0.12 (0.53) | 0.05 | .82 |
| Spirituality (vs prosocial behaviors) | −0.32 (0.42) | 0.57 | .45 |
| Participant type | |||
| With physical illness (vs community based) | 0.59 (0.56) | 1.11 | .29 |
| With psychiatric illness (vs community based) | 0.09 (0.34) | 0.07 | .79 |
| Mean age, y | 0.08 (0.04) | 5.11 | .02 |
| Women, % | 0.003 (0.008) | 0.16 | .69 |
| Intervention format | |||
| Individual (vs group) | 0.39 (0.42) | 0.87 | .35 |
| Sessions, No. | −0.02 (0.03) | 0.55 | .46 |
| Length of sessions, min | 0.002 (0.002) | 1.03 | .31 |
| SASQI | |||
| Scores in top 50th percentile (vs bottom 50th percentile) | −0.91 (0.44) | 4.39 | .04 |
| Interaction terms | |||
| Wisdom component (prosocial behavior) × mean age | 0.00 [Reference] | NA | NA |
| Wisdom component (emotional regulation) × mean age | −0.06 (0.04) | 2.18 | .14 |
| Wisdom component (spirituality) × mean age | −0.13 (0.04) | 9.64 | .002 |
| Wisdom component (prosocial behavior) × SASQI Score (top 50th percentile) | 0.00 [Reference] | NA | NA |
| Wisdom component (emotional regulation) × SASQI Score (top 50th percentile) | 0.78 (0.87) | 0.80 | .37 |
| Wisdom component (spirituality) × SASQI Score (top 50th percentile) | 4.17 (1.07) | 15.1 | <.001 |
Abbreviations: NA, not applicable; SASQI, Scale for Assessing Scientific Quality of Investigations (modified version).