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Table 4 Adjusted influence of weight history indices on BMI gains 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

Predictor

Cor. R2

B (SE), 95% CI

T, p

β

Highest weight

0.265

0.004 (0.004), − 0.004; 0.013

1.01, 0.313

0.031

Lowest weight

0.276

−0.027 (0.008), − 0.042; − 0.013

− 3.62, <  0.001

− 0.112

Highest BMI

0.270

0.034 (0.013), 0.009; 0.060

2.62, 0.009

0.081

Lowest BMI

0.270

−0.065 (0.026), − 0.116; − 0.014

2.52, 0.012

−0.080

Highest BMI percentage

0.270

0.661 (0.262), 0.146; 1.176

2.52, 0.012

0.078

Lowest BMI percentage

0.272

−1.608 (0.569), −2.726; − 0.461

− 2.83, 0.005

− 0.090

WS

0.290

0.023 (0.004), 0.015; 0.032

5.31, <  0.001

0.164

WE

0.278

−0.044 (0.011), − 0.066; − 0.022

−3.93, < 0.001

− 0.121

BMI suppression

0.295

0.071 (0.012), 0.047; 0.095

5.78, < 0.001

0.178

BMI elevation

0.288

−0.159 (0.032), − 0.221; − 0.098

−5.05, <  0.001

−0.154

BMI suppression percentage

0.291

1.326 (0.247), 0.841; 1.810

5.37, <  0.001

0.165

BMI elevation percentage

0.286

−3.515 (0.723), −4.934; −2.095

− 4.86, <  0.001

−0.148

BMI oscillation

0.278

0.049 (0.013), 0.024; 0.074

3.85, <  0.001

0.119

PWC

0.313

2.860 (0.387), 2.100; 3.619

7.39, <  0.001

0.227

Residual 1

0.315

−0.063 (0.008); − 0.079; − 0.046

−7.59, < 0.001

−0.233

Residual 2

0.275

0.015 (0.004); 0.006, 0.024

3.36, 0.001

0.104

Residual 3

0.296

−0.071 (0.012), − 0.095; − 0.048

−5.89, <  0.001

−0.180

Residual 4

0.268

0.025 (0.012), 0.002; 0.048

2.13, 0.034

0.066

h-AFW

0.264

0.002 (0.002), −0.003; 0.006

0.74, 0.458

0.023

l-AFW

0.280

−0.023 (0.006), − 0.034; − 0.012

−4.09, <  0.001

−0.127

Age at highest weight

0.265

0.008 (0.008), −0.007; 0.024

1.03, 0.305

0.032

Age at lowest weight

0.265

0.006 (0.005), −0.005; 0.016

1.02, 0.309

0.031

Years since highest weight

0.265

−0.006 (0.006), − 0.018; 0.005

−1.06, 0.291

−0.033

Years since lowest weight

0.267

−0.014 (0.008), − 0.029; 0.001

− 1.85, 0.065

−0.057

  1. Note. Regression coefficients are adjusted for length of stay. Corrected R2 = 0.265 for the regression model with only length of stay as predictor. Three best predictors based on β in boldface
  2. 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