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Table 5 Mapping equations from I-QOL score to AQoL-8D utility

From: Mapping of Incontinence Quality of Life (I-QOL) scores to Assessment of Quality of Life 8D (AQoL-8D) utilities in patients with idiopathic overactive bladder

  OLS MM-estimator GLM
  Coeff. SE Coeff. SE Coeff. SE
Model 1 (using I-QOL total score)
I-QOL 0.5697422 0.0747355** 0.6172410 0.0730065** 1.0110720 0.1441272**
Constant 0.1732625 0.0598689** 0.1370898 0.0615673* –1.2866600 0.1225249**
Model 2 (using I-QOL subscale scores)
I-QOL-PS 0.3469097 0.1252910** 0.5913308 0.0627952** 0.6703759 0.2472593**
I-QOL-SE 0.1985825 0.0938378*    0.3521859 0.1691879*
Constant 0.1787669 0.0690521** 0.1165455 0.0564778* –1.3254590 0.1526178**
  1. SE - standard errors. *p < 0.05, **p < 0.01. The I-QOL total/subscale scores included in the regression model were calculated as original scores divided by 100. The Gaussian family with log link was used.
  2. I-QOL-PS: I-QOL Psychosocial Impacts; I-QOL-SE: I-QOL Social Embarrassment.