Table 3. Summary of the overall subgroup analyses for within group effect sizes.
| Outcome Measure | MBI | K | Effect Size Estimate | Heterogeneity | ||||
|---|---|---|---|---|---|---|---|---|
| Hedges’ g | 95% CI | p | Q | p | I2 (%) | |||
| Pre- and Post- differences | ||||||||
| Anxiety | MBSR | 23 | 0.54 | [0.39, 0.69] | < 0.01 | 63.86 | < 0.01 | 65.55 |
| MBCT | 4 | 0.81 | [0.27, 1.35] | < 0.01 | 8.15 | < 0.05 | 63.19 | |
| MBCR | 1 | 0.51 | [0.22, 0.81] | < 0.01 | 0.0 | 1.00 | 0.00 | |
| Depression | MBSR | 25 | 0.41 | [0.28, 0.55] | < 0.01 | 60.85 | < 0.01 | 60.56 |
| MBCT | 4 | 0.43 | [-0.53, 1.40] | 0.378 | 26.24 | < 0.01 | 88.57 | |
| MBCR | 2 | 0.47 | [0.23, 0.71] | < 0.01 | 0.24 | 0.624 | 0.00 | |
| CRF | MBSR | 20 | 0.21 | [-0.01, 0.43] | 0.066 | 112.35 | < 0.01 | 83.09 |
| MBCT | 1 | 1.30 | [0.90, 1.70] | < 0.01 | 0.00 | 1.00 | 0.00 | |
| MBCR | 1 | 0.37 | [0.08, 0.66] | 0.012 | 0.00 | 1.00 | 0.00 | |
| Follow-Up | ||||||||
| Anxiety | MBSR | 10 | 0.67 | [0.52, 0.82] | < 0.01 | 13.79 | 0.130 | 34.70 |
| MBCT | 4 | 1.18 | [0.77, 1.59] | < 0.01 | 4.69 | 0.196 | 36.00 | |
| Depression | MBSR | 11 | 0.48 | [0.34, 0.62] | < 0.01 | 15.29 | 0.122 | 34.59 |
| MBCT | 3 | 0.87 | [-0.02, 1.75] | 0.056 | 12.13 | < 0.01 | 83.51 | |
| CRF | MBSR | 11 | 0.36 | [0.22, 0.50] | < 0.01 | 15.04 | 0.131 | 33.52 |
| MBCT | 1 | 1.30 | [0.91, 1.69] | < 0.01 | 0.00 | 1.00 | 0.00 | |
CRF = cancer-related fatigue; K = number of studies that were included in the review; n = number of participants; CI = confidence interval; MBSR = Mindfulness-Based Stress Reduction; MBCT = Mindfulness-Based Cognitive Therapy; MBCR = Mindfulness-Based Cancer Recovery.