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Table 6 Adjusted influence of weight history indices on changes in bulimic symptoms (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 weight0.0580.009 (0.004), 0.001; 0.0172.11, 0.0350.075
Lowest weight0.0530.005 (0.009), − 0.012; 0.0230.059, 0.5580.025
Highest BMI0.0570.026 (0.013), 0.001; 0.0512.05, 0.0410.072
Lowest BMI0.0530.018 (0.033), −0.047; 0.0820.53, 0.5940.025
Highest BMI percentage0.0650.822 (0.254), 0.323; 1.3213.23, 0.0010.113
Lowest BMI percentage0.0530.471 (0.744), −0.989; 1.9320.63, 0.5260.031
WS0.0580.009 (0.004), 0.001; 0.0182.12, 0.0350.079
WE0.0520.004 (0.011), 0.019; 0.0260.31, 0.7590.011
BMI suppression0.0570.026 (0.013), 0.001; 0.0512.05, 0.0410.076
BMI elevation0.053−0.018 (0.033), − 0.082; 0.047−0.53, 0.594− 0.020
BMI suppression percentage0.0650.824 (0.254), 0.325; 1.3233.24, 0.0010.120
BMI elevation percentage0.053−0.491 (0.746), −1.955; 0.974− 0.66, 0.511−0.024
BMI oscillation0.0560.023 (0.13), −0.002; 0.0481.83, 0.0680.066
PWC0.0591.062 (0.456), 0.167; 1.9562.33, 0.0200.099
Residual 10.0520.000 (0.014), −0.027; 0.0270.02, 0.9840.001
Residual 20.0570.009 (0.004), 0.000; 0.0171.99, 0.0470.071
Residual 30.0530.009 (0.014), 0.019; 0.0370.63, 0.5280.027
Residual 40.052−0.001 (0.011), −0.024; 0.021− 0.094, 0.925−0.003
h-AFW0.0770.010 (0.002), 0.006; 0.0144.51, <  0.0010.156
l-AFW0.0540.007 (0.006), −0.006; 0.0191.05, 0.2950.044
Age at highest weight0.072−0.031 (0.008), − 0.046; − 0.016−3.99, <  0.001−0.139
Age at lowest weight0.074−0.022 (0.005), − 0.032; − 0.012−4.20, <  0.001−0.147
Years since highest weight0.055−0.009 (0.006), − 0.020; 0.002−1.58, 0.114− 0.056
Years since lowest weight0.0520.000 (0.008), −0.015; 0.0150.02, 0.9870.001
  1. Note. Regression coefficients are adjusted for length of stay and admission body mass index. Corrected R2 = 0.054 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