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Table 2 Regression coefficients based on a random effects model

From: A conceptual disease model for adult Pompe disease

Level Physiological variables Symptom status Functional status Health perceptions Health related quality of life
Model I MRC II FVC III FSS IV RHS V EQ-5D VAS VI MCS VII PCS VIII Utility
Constant 83.452 70.526 8.737 16.989 −9.313 49.990 24.526 0.530
Age −0.069 −0.144 0.011 −0.096 0.126 −0.016 −0.046 0.001
Female −0.028 17.994 0.307 −0.957 4.673 −1.282 −0.402 0.010
Disease duration −0.563 −0.346 −0.077 −0.052 0.653 0.063 −0.086 −0.001
Enzyme activity 0.370 −0.431 0.007 −0.048 0.004 −0.359 −0.069 −0.006
Muscle strength    −0.031 0.189     
Respiratory function    −0.011 0.075     
Fatigue Severity Scale     −0.578     
Rotterdam Handicap Scale      2.030    
Visual Analogue Scale       0.157 0.223 0.004
patients 78 72 61 61 73 73 73 71
observations 249 257 160 158 154 152 152 161
R2 (overall) 0.105 0.075 0.322 0.623 0.343 0.183 0.293 0.354
Wald test (p-value) <0.001 0.001 0.002 <0.001 <0.001 0.005 <0.001 <0.001
  1. Figures in bold indicate significance at 5 % level; Enzyme activity, muscle strength and respiratory function were measured as a percentage of normal values, Visual Analogue Scale, Mental Component Scale and Physical Component Scale were measured on a scale from 0–100, Fatigue Severity Scale was measured on a scale from 1–7, Rotterdam Handicap Scale was measured on a scale from 0–36, Utility was measured on a scale from 0–1