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Table 4 Mean scores pre- and post-bariatric surgery, p-value for paired t-test and Effect Size

From: Further psychometric validation of the BODY-Q: ability to detect change following bariatric surgery weight gain and loss

  No. Pre Mean (SD) Post Mean (SD) Mean difference (SD) p ES SRM
Arms 53 25.2 (19.3) 28.8 (27.2) 3.6 (23.8) 0.272 0.19 0.15
Abdomen a 53 5.8 (10.6) 25.1 (23.9) 19.3 (24.7) <0.001 1.82 0.78
Back 51 21.1 (22.1) 48.0 (27.8) 26.9 (29.1) <0.001 1.22 0.92
Body 53 14.7 (12.3) 42.9 (18.6) 28.3 (20.9) <0.001 2.29 1.35
Buttocks 50 16.0 (20.0) 39.3 (24.1) 23.2 (25.5) <0.001 1.16 0.91
Hips Outer Thighs 51 15.8 (19.9) 38.9 (24.3) 23.1 (26.0) <0.001 1.16 0.89
Inner Thighs 51 10.5 (15.1) 27.9 (28.2) 17.4 (27.2) <0.001 1.15 0.64
Body Image 51 13.4 (13.6) 37.2 (22.3) 23.7 (22.2) <0.001 1.74 1.07
Physical 49 46.1 (19.7) 76.2 (21.4) 30.1 (23.2) <0.001 1.53 1.30
Psych 50 55.5 (17.7) 58.4 (21.7) 2.9 (17.6) 0.254 0.16 0.17
Sexual 46 44.7 (21.5) 43.0 (23.5) −1.6 (21.6) 0.615 −0.08 −0.07
Social 50 51.4 (17.0) 61.6 (19.5) 10.2 (21.9) 0.002 0.60 0.47
  1. ES effect size, SRM standardized response mean
  2. aNonparametric test performed