Table 1

Parameter estimates (standard errors) from logistic regression models for FP's


Narrow FP
Broad FP




initial model
final model
final model

model for initial FP
α0
-4.30 (.13)
-4.14 (.06)
-2.37 (.05)
αage(2)
.23 (.17)

.15 (.07)
αage(3)
.29 (.17)

-.01 (.08)
αage(4)
.13 (.19)

.05 (.08)
αage(5)
.00 (.22)

-.02 (.09)
model for subsequent FP's
β0
-4.81 (.18)
-4.89 (.06)
-2.85 (.07)
βage(2)
.24 (.19)

-.02 (.07)
βage(3)
.00 (.19)

-.16 (.08)
βage(4)
-.32 (.21)

-.28 (.08)
βage(5)
.07 (.21)

-.24 (.08)
βtime(2)
-.02 (.11)

-.13 (.05)
βtime(3)
.10 (.20)

-.22 (.09)
βtime(4)
.12 (.22)

-.08 (.09)
βscreen(3)
-.30 (.13)

-.11 (.05)
βscreen(4)
-.07 (.13)

-.22 (.06)
βFP(1)
2.35 (.14)
2.34 (.14)
1.64 (.05)

Baker et al. BMC Medical Research Methodology 2003 3:11   doi:10.1186/1471-2288-3-11