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Table 8 Adjusted influence of weight history indices on changes in compensatory behaviors (SIAB-S scale) 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 weight0.0350.002 (0.001), 0.000; 0.0042.05, 0.0410.074
Lowest weight0.0410.006 (0.002), 0.002; 0.0103.06, 0.0020.132
Highest BMI0.0330.005 (0.003), − 0.001; 0.0111.66, 0.0970.059
Lowest BMI0.0420.023 (0.007), 0.009; 0.0383.13, 0.0020.148
Highest BMI percentage0.0320.079 (0.059), − 0.036; 0.1941.34, 0.1800.048
Lowest BMI percentage0.0420.541 (0.170), 0.208; 0.8743.19, 0.0010.156
WS0.0340.002 (0.001), 0.000; 0.0041.79, 0.0740.067
WE0.036−0.006 (0.003), − 0.011; − 0.001−2.17, 0.030− 0.081
BMI suppression0.0330.005 (0.003), − 0.001; 0.0111.66, 0.0970.063
BMI elevation0.042−0.023 (0.007), − 0.038; − 0.009−3.13, 0.002−0.117
BMI suppression percentage0.0320.079 (0.059), −0.036; 0.1941.35, 0.1770.051
BMI elevation percentage0.043−0.548 (0.170), − 0.882; − 0.214−3.22, 0.001−0.120
BMI oscillation0.0300.001 (0.003), −0.004; 0.0070.44, 0.6570.016
PWC0.0350.214 (0.105), 0.009; 0.4192.04, 0.0410.088
Residual 10.0310.003 (0.003), −0.003; 0.0090.87, 0.3870.052
Residual 20.0340.002 (0.001), 0.000; 0.0041.77, 0.0770.064
Residual 30.032−0.005 (0.003), − 0.011; 0.002−1.45, 0.146−0.063
Residual 40.0380.007 (0.003), 0.001; 0.0122.53, 0.0120.090
h-AFW0.0310.000 (0.001), −0.001; 0.0010.78, 0.4340.028
l-AFW0.0370.003 (0.001), 0.001; 0.0062.38, 0.0170.100
Age at highest weight0.0300.001 (0.002), −0.003; 0.0040.40, 0.6900.014
Age at lowest weight0.034−0.002 (0.001), − 0.005; 0.000−1.77, 0.077−0.063
Years since highest weight0.040−0.004 (0.001), − 0.006; − 0.001−2.81, 0.005−0.100
Years since lowest weight0.031−0.001 (0.002), − 0.005; 0.002−0.78, 0.438− 0.028
  1. Note. Regression coefficients are adjusted for length of stay and admission body mass index. Corrected R2 = 0.031 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