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Table 2 Preoperative and postoperative (perceived preoperative) quality of life scores

From: Effect of timing on baseline quality of life scores among surgical cancer patients

SF-36 domains Preoperative group (N = 133)a Postoperative group (N = 150)a Effect size
MD (95% CI) P value
Physical functioning 64.94 ± 28.17 56.47 ± 32.74 − 8.47 (− 15.66 to − 1.28) 0.022
Role physical 48.80 ± 34.78 38.68 ± 41.00 − 10.12 (− 19.08 to − 1.16) 0.030
Bodily pain 54.97 ± 29.98 47.93 ± 32.62 − 7.04 (− 14.40 to 0.32) 0.063
General health 52.64 ± 21.78 57.31 ± 21.12 4.67 (− 0.35 to 9.69) 0.070
Vitality 45.81 ± 22.96 45.82 ± 23.71 0.01 (− 5.47 to 5.49) 0.995
Social functioning 56.92 ± 32.09 57.30 ± 31.71 0.38 (− 7.10 to 7.86) 0.922
Role emotional 63.79 ± 32.38 59.86 ± 40.40 − 3.93 (− 12.57 to 4.71) 0.380
Mental health 63.57 ± 20.45 69.36 ± 20.26 5.79 (1.02 to 10.56) 0.019
Overall physical health 42.79 ± 10.25 39.29 ± 11.30 − 3.50 (− 6.04 to − 0.96) 0.008
Overall mental health 43.19 ± 11.67 46.00 ± 11.38 2.81 (0.11 to 5.51) 0.045
  1. a Scores are mean ± standard deviation (higher scores indicate better quality of life); MD mean difference (negative values favours preoperative group); CI confidence intervals