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Table 4 Preference model test results

From: Demand preferences for health management services in a population of older adults with visual impairment in China: a conjoint analysis

Correlation

Total

Grade 1

Grade 2

Grade 3

Grade 4

Value

Sig

Value

Sig

Value

Sig

Value

Sig

Value

Sig

Pearson’s R

0.949

0.000

0.907

0.000

0.897

0.000

0.867

0.000

0.914

0.000

Kendall’s tau

0.752

0.000

0.708

0.000

0.695

0.000

0.673

0.000

0.691

0.000

  1. Pearson’s R and Kendall’s tau: give the correlation coefficient between the score estimated from the model and the measured preference score. α = 0.05