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Table 2 Paired t -test of quality of life scores by domain at baseline and at 6 month

From: Improvement of quality of life following 6 months of methadone maintenance therapy in Malaysia

Domain Baseline score 6 month score Difference (mean ± SD) t p value
  (mean ± SD) (mean ± SD)    
Physical 51.54 ± 15.81 65.01 ± 11.83 13.47 ± 16.83 −8.840 < 0.001*
Psychological 50.18 ± 17.58 65.72 ± 13.33 15.54 ± 20.81 −8.250 < 0.001*
Social 53.09 ± 22.24 60.41 ± 19.02 7.32 ± 22.71 −3.559 0.001*
Environment 55.84 ± 12.47 65.39 ± 12.63 9.55 ± 15.30 −6.896 < 0.001*
  1. *significant when p value < 0.05.