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Table 1 Variables with greatest predictive value in univariate Cox PH models

From: Indicators of "Healthy Aging" in older women (65-69 years of age). A data-mining approach based on prediction of long-term survival

Variable

Mean Concordance (C)

Number of step-ups completed in 10 seconds

0.589

Response to Question: How is your health compared to others your age? (categories: excellent, good, fair, poor, very poor)

0.579

Average step length, Usual Pace (m)

0.577

Walking speed, Usual Pace (m/s)

0.573

Contrast sensitivity score, average of high and low spatial frequencies

0.570

Contrast sensitivity score, average of low spatial frequencies

0.569

Impairments associated with daily living, index of 6 tasks

0.569

Contrast sensitivity score, average of low spatial frequencies, normalized

0.568

Impairments associated with daily living, index of 5 tasks (walking 2 or 3 blocks, climbing up 10 steps, climbing down 10 steps, preparing own means and doing housework).

0.568

Contrast sensitivity score, average of low and high spatial frequencies, normalized

0.564

  1. The first column provides a brief description of each variable. Mean concordance refers to an average of concordance index (C) estimates calculated in each of 10,000 cross-validation simulation trials (see Methods). The 95% confidence interval associated with the mean concordance estimate for each variable is approximately ± 0.001.
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BMC Geriatrics

ISSN: 1471-2318

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