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Table 2 Results from multiple linear regression models of the effect on change in SF-36 domains from baseline to 6 months and 2 years (outcomes) of a one-percentage-point decrease in weight, BMI, and HbA1c from baseline to 6 months and 2 years (predictors)

From: Quality of life after gastric bypass surgery in patients with type 2 diabetes: patients’ experiences during 2 years of follow-up

Outcome Predictor 6 month follow-up 2 year follow-up
Adjusted β (95% CI)b P value Adjusted β (95% CI)b P value
ΔPF Weight decrease (%)  − 2.24 (− 5.63; 1.16) 0.171  − 0.01 (− 1.55; 1.52) 0.983
ΔRP Weight decrease (%)  − 4.60 (4.01; − 1.21) 0.257 0.12 (− 4.40; 4.64) 0.952
ΔBP Weight decrease (%)  − 4.43 (− 8.54; − 0.32) 0.037 0.40 (− 3.71; 4.51) 0.829
ΔGH Weight decrease (%)  − 3.55 (− 8.38; 1.30) 0.131  − 1.60 (− 4.50; 1.30) 0.239
ΔVT Weight decrease (%)  − 2.50 (− 6.90; 1.94) 0.236  − 1.36 (− 3.10; 0.39) 0.111
ΔSF Weight decrease (%) 0.71 (− 2.49; 3.91) 0.626  − 1.99 (− 4.51; 0.52) 0.105
ΔEF Weight decrease (%)  − 5.15 (− 8.25; − 2.04) 0.005  − 0.40 (− 3.97; 3.16) 0.801
ΔMH Weight decrease (%)  − 0.68 (− 3.20; 1.83) 0.553  − 0.13 (− 1.10; 0.84) 0.770
ΔPF BMI decrease (%)  − 2.12 (− 5.12; 0.88) 0.144 0.14 (− 1.27; 1.55) 0.824
ΔRP BMI decrease (%)  − 6.83 (− 15.00; 1.33) 0.091 0.60 (− 3.62; 4.81) 0.753
ΔBP BMI decrease (%)  − 6.34 (− 10.92; − 1.76) 0.012 0.45 (− 3.41; 4.31) 0.795
ΔGH BMI decrease (%)  − 2.53 (− 6.97; 1.92) 0.230  − 0.53 (− 4.05; 1.46) 0.309
ΔVT BMI decrease (%)  − 3.42 (− 7.50; 0.65) 0.900  − 1.20 (0.56; − 1.57) 0.154
ΔSF BMI decrease (%) 0.11 (− 3.25; 3.48) 0.941  − 2.14 (− 4.47; 0.20) 0.067
ΔEF BMI decrease (%)  − 3.31 (− 6.75; 0.14) 0.058  − 0.17 (− 3.47; 3.13) 0.908
ΔMH BMI decrease (%)  − 0.73 (− 2.90; 1.44) 0.467  − 0.14 (− 1.04; 0.77) 0.740
ΔPF HbA1c decrease (%)  − 1.95 (1.81; 1.42) 0.791  − 0.17 (− 1.04; 0.70) 0.666
ΔRP HbA1c decrease (%) -1.80 (1.16; 1.8) 0.34 −2.99 (-1.70; 2.62) 0.025
ΔBP HbA1c decrease (%)  − 0.78 (− 3.42; 1.85) 0.518 0.09 (− 2.83; 3.01) 0.073
ΔGH HbA1c decrease (%)  − 0.69 (− 2.98; 1.60) 0.512 0.01 (− 2.22; 2.20) 0.996
ΔVT HbA1c decrease (%)  − 1.05 (− 2.56; 0.45) 0.145  − 1.05 (− 2.56; 0.45) 0.145
ΔSF HbA1c decrease (%)  − 0.94 (− 2.43; 0.55) 0.190  − 1.91 (− 3.91; 0.08) 0.058
ΔEF HbA1c decrease (%) 4.98 (− 1.25; 2.24) 0.988 1.61 (− 0.98; 4.20) 0.189
ΔMH HbA1c decrease (%)  − 0.57 (− 1.45; 0.31) 0.177 0.245 (− 0.48; 0.97) 0.460
  1. Italic indicates significant p values
  2. aChange from baseline to follow-up in Physical functioning (PF), Role functioning/physical (RP), Pain (BP), General health (GH), Energy/fatigue (VT), Social functioning (27), Role functioning/emotional (EF, and Emotional well-being (MH)
  3. bAdjusted for values of outcome and predictor variables at baseline