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Table 4 Data A125, A250, and A500. Selected functions from MFP models with all data (“all”) and after removal of IPs identified from the univariable (“IPAu”) and multivariable (“IPAm”) diagnostic analyses. The number of IPs identified in each respective analysis is shown in parentheses next to the name of the data

From: Effects of influential points and sample size on the selection and replicability of multivariable fractional polynomial models

Type

Variable

Data A125 (3, 0)

Data A250 (5, 5)

Data A500 (6, 1)

True model

All

IPAu

IPAm

All

IPAu

IPAm

All

IPAu

IPAm

Cont.

x1

Out

=

=

1

=

=

0.5, 1

=

=

0.5, 1

 

x3

Out

1

Out

1

=

=

1

=

=

1

 

x5

0

−0.5

0

0, 3

−0.5

0

0, 3

−1, 0

0

−0.2

 

x6

0

=

=

0

=

=

0

=

=

0

 

x7

Out

=

=

Out

=

=

Out

=

=

Out

 

x10

Out

=

=

1

=

3

1

=

=

1

Cat.

x9a

Out

=

=

Out

=

=

Out

=

=

Out

 

X9b

Out

  

Out

=

=

In

=

Out

Out

Bi.

x2

Out

=

=

Out

=

=

Out

=

=

Out

 

x4a

Out

=

=

In

=

=

In

=

=

In

 

x4b

Out

=

=

Out

=

=

Out

=

In

Out

 

x8

In

=

=

In

=

=

In

=

=

In