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Table 2 Weighted Least-squares Estimation

From: Accelerated failure-time model with weighted least-squares estimation: application on survival of HIV positives

Covariates

Estimates

SE

95% CI

LCL

UCL

Constant

4.773

0.026020

4.722

4.824

Age

−0.00516

0.000010

−0.00518

− 0.00514

Weight

0.00497

0.000005

0.00495

0.00498

BFS

−0.04742

0.013663

−0.07420

−0.02064

AFS

−0.02048

0.003439

−0.02721

−0.01374

CS (IV)

−0.25080

0.002214

−0.25513

−0.24646

CD4%(16–28)

0.10320

0.046816

0.01143

0.19496

  1. Estimates: Coefficients Correspond to the log Median Survival Time; Estimate for Age corresponds to a year increase in Age; Estimate for Weight corresponds to a Kilogram increase in Weight; CI: Confidence Interval; LCL: Lower Confidence Limit; UCL: Upper Confidence Limit; BFS: Bedridden Functional Status and its reference category is Working Functional Status; AFS: Ambulatory Functional Status and its reference category is Working Functional Status; CS (IV): Clinical Stage IV and its reference category is Clinical Stage I-III; CD4%16–28: Cluster of Differentiation Agent Four Percent 16–28 and its reference category is Cluster of Differentiation Agent Four Percent 12–15.