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Table 3 Multivariable Analysis (Age, education and group included a priori)

From: Healthcare decision-making in end stage renal disease-patient preferences and clinical correlates

MULTIVARIABLE LINEAR REGRESSION ANALYSIS: DECISION-MAKING SUBSCALE
Variable   Parameter estimate (95 % CI) p-value
Education High school −1.23 (−4.83, 2.36) 0.50
Post high school ~
Group Predialysis −8.20 (−12.59, −3.81) <0.001
In-centre HD −1.68 (−6.05, 2.68)
Home HD ~
Gender Male −3.29 (−6.52, −0.07) 0.046
Female ~
Marital Status Married or Partner 8.79 (2.92, 14.65) 0.015
Single 5.43 (−1.35, 12.21)
Divorced/Separated 6.26 (−1.28, 13.80)
Widowed ~
Age (per 10 years) −3.27 (−4.54, −2.01) <0.001
Ethnicity White 10.62 (5.36, 15.89) <0.001
Non-white ~
API (Information Seeking %) Per percentage increase 0.15 (0.01, 0.30) 0.035
Between-centre variability 1.17 X 10−19 (1.05 X 10−36, 0.01) -
Within-centre variability 253.25 (221.53, 289.52) -
Intra Class Coefficient (ICC)*** 4.61 X 10−22 (−)** -
MULTIVARIABLE LINEAR REGRESSION ANALYSIS: INFORMATION-SEEKING SUBSCALE
Variable   Parameter estimate (95 % CI) p-value
Education High school −2.06 (−4.41, 0.28) 0.085
Post high school ~
Cohort Predialysis −4.16 (−6.99, −1.33) <0.001
In-centre HD −0.20 (−3.05, 2.64)
Home HD ~
Marital status Married or partner 1.84 (−1.96, 5.65) 0.002
Single −2.56 (−6.96, 1.83)
Divorced or sep. 4.14 (−0.75, 9.04)
Widowed ~
Age (per 10 years) −0.79 (−1.60, 0.03) 0.058
BDI in 6 categories (per category increase)* 0.86 (0.24, 1.49) 0.007
Between-centre variability 1.14 (0.08, 16.36) -
Within-centre variability 107.87 (94.40, 123.27) -
Intra Class Coefficient (ICC)*** 0.01 (7.28 X 10−4, 0.13) -
  1. *BDI categories: 0–10, 11–15, 16–20, 21–25, 26–30, ≥31
  2. **Standard error estimate of ICC very close to 0 so no confidence interval provided
  3. ***ICC is a measure of the correlation of observations in the same cluster. ICC close to 1 indicates the people in the cluster are very similar, whereas ICC close to 0 indicates the between cluster variability is small compared to the within cluster variability