Skip to main content

Table 2 Data A250, B250 and C250. Univariable analysis for continuous variables. “All data” and “all data-IPs” refer to FP powers obtained with complete data and after removing IPs, respectively. Variable (a, b, c) refers to the total number of IPs for each variable in each dataset, where a, b, and c stand for A250, B250, and C250 respectively. “=” denotes same power term selected

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

 

A250

B250

C250

 

Variable(a,b, c)

All data

All data-IPs

All data

All data-IPs

All data

All data-IPs

True

x1(0, 0, 1)

1

=

1

=

3, 3

1

0.5, 1

x3(0, 0, 0)

Out

=

Out

=

Out

=

1

x5(3, 0, 2)

0, 3

−0.5

0

=

0

0.5, 0.5

−0.2

x6(2, 0, 1)

0

−0.5

−0.5

=

1

0.5

0

x7(0, 3, 0)

1

=

Out

0

0

=

Out

x10(0, 0, 0)

Out

=

Out

=

1

=

1