Table 3

Parameter estimates from flexible parametric survival models

Parameter

Standard FPM

splines calculated backwards

Restricted FPM

incorporating a cure proportion

Restricted FPM

including time-dependent effects


Intercept

0.385 (0.032)

0.350 (0.031)

0.279 (0.033)

Age group

<50

-

-

-

50-59

0.089 (0.034)

0.089 (0.034)

0.085 (0.035)

60-69

0.214 (0.030)

0.212 (0.031)

0.184 (0.031)

70-79

0.385 (0.030)

0.382 (0.030)

0.284 (0.031)

80+

0.788 (0.032)

0.785 (0.032)

0.532 (0.035)

LRT

p <0.0001

p <0.0001

p <0.0001

Calendar period

1953-1964

-

-

-

1965-1974

-0.339 (0.029)

-0.340 (0.029)

-0.264 (0.032)

1975-1984

-0.741 (0.028)

-0.743 (0.028)

-0.585 (0.030)

1985-1994

-0.922 (0.027)

-0.924 (0.027)

-0.769 (0.029)

1995-2003

-1.190 (0.027)

-1.194 (0.027)

-1.025 (0.030)

LRT

p <0.0001

p <0.0001

p <0.0001

LRT comparing to the previous model

p <0.0001

p <0.0001

AIC

92285.22

92323.95

91590.12

BIC

92398.63

92429.26

91825.04


Parameter estimates (standard errors) from flexible parametric survival models

FPM, flexible parametric survival model; LRT, likelihood ratio test; AIC, Akaike's information criterion; BIC, Bayesian information criterion.

Andersson et al. BMC Medical Research Methodology 2011 11:96   doi:10.1186/1471-2288-11-96

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