Indicator | Pretest, Mean ± SD | Posttest, Mean ± SD | Change in Mean | t (22) | P-value |
Pain | 4.22 ± 2.19 | 2.48 ± 2.43 | 1.74 | −4.8 | 0.0001 |
Memory | 5.43 ± 2.52 | 3.19 ± 2.18 | 2.24 | −4.95 | 0.0001 |
Craving | 5.27 ± 2.1 | 2.64 ± 2.17 | 2.64 | −6.54 | <0.0001 |