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Table 5 Adjusted influence of weight history indices on changes in eating disorder psychopathology (SIAB-S total score) during inpatient treatment. Results of the multiple linear regression analyses

From: Dimensions within 24 weight history indices and their association with inpatient treatment outcome in adults with anorexia nervosa: analysis of routine data

PredictorCor. R2B (SE), 95% CIT, pβ
Highest weight0.0470.005 (0.002), 0.002; 0.0082.99, 0.0030.107
Lowest weight0.0480.011 (0.004), 0.004; 0.0183.12, 0.0020.134
Highest BMI0.0450.014 (0.005), 0.004; 0.0242.76, 0.0060.098
Lowest BMI0.0490.043 (0.013), 0.017; 0.0693.29, 0.0010.156
Highest BMI percentage0.0480.324 (0.102), 0.123; 0.5253.17, 0.0020.112
Lowest BMI percentage0.0490.973 (0.297), 0.389; 1.5573.27, 0.0010.160
WS0.0460.005 (0.002), 0.002; 0.0092.85, 0.0040.107
WE0.044−0.012 (0.005), − 0.021; − 0.003−2.55, 0.011− 0.094
BMI suppression0.0450.014 (0.005), 0.004; 0.0242.76, 0.0060.104
BMI elevation0.049−0.043 (0.013), − 0.069; − 0.017−3.29, 0.001− 0.123
BMI suppression percentage0.0480.325 (0.102), 0.125; 0.5263.18, 0.0020.119
BMI elevation percentage0.049−0.990 (0.298), −1.575; − 0.404−3.17, 0.001−0.123
BMI oscillation0.0380.007 (0.005), −0.003; 0.0181.46, 0.1440.053
PWC0.0490.592 (0.183), 0.233; 0.9513.24, 0.0010.183
Residual 10.0360.000 (0.006), −0.011; 0.011−0.03, 0.979− 0.002
Residual 20.0460.005 (0.002), 0.002; 0.0082.83, 0.0050.101
Residual 30.040−0.011 (0.006), − 0.022; 0.000−1.90, 0.058−0.081
Residual 40.0460.013 (0.005), 0.004; 0.0222.84, 0.0040.100
h-AFW0.0470.003 (0.001), 0.001; 0.0042.99, 0.0030.105
l-AFW0.0420.006 (0.003), 0.001; 0.0112.24, 0.0250.094
Age at highest weight0.043−0.007 (0.003), −0.013; − 0.001−2.34, 0.020−0.083
Age at lowest weight0.059−0.009 (0.002), − 0.013; − 0.005−4.33, <  0.001−0.152
Years since highest weight0.049−0.007 (0.002), − 0.012; − 0.003−3.25, 0.001−0.114
Years since lowest weight0.036−0.001 (0.003), − 0.007; 0.005−0.38, 0.702− 0.014
  1. Note. Regression coefficients are adjusted for length of stay and admission body mass index. Corrected R2 = 0.037 for the regression model with only length of stay and admission body mass index as predictors. Three best predictors based on β in boldface
  2. SIAB-S Structured Inventory for Anorexic and Bulimic Disorders for DSM-IV and ICD-10 – Self-Rating, Cor. R2 corrected R2, BMI body mass index, WS weight suppression, WE weight elevation, PWC percentage weight change, Residual 1 highest on admission weight, Residual 2 admission on highest weight, Residual 3 lowest on admission weight, Residual 4 admission on lowest weight, h-AFW highest age-factored weight, l-AFW lowest age-factored weight