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Add baseline and change from baseline fields

Source: R/nif_baseline.R
add_cfb.Rd

[Deprecated]

This function is deprecated. Pleas use derive_cfb() instead.

Usage

add_cfb(
  obj,
  baseline_filter = "TIME <= 0",
  summary_function = median,
  silent = NULL
)

Arguments

obj

A NIF object.

baseline_filter

A filter term to identify the baseline condition.

summary_function

The function to derive the baseline. This function is applied over the DV values identified by the 'baseline_filter' term. The default function is median. Alternatively, mean, min or max can be considered.

silent

Suppress messages, defaults to nif_option setting if NULL.

Value

A NIF object

Details

Output fields:

  • DVBL Baseline value for the dependent variable DV.

  • DVCFB Change from baseline for the dependent variable DV.

The Baseline is calculated as the median (or the summary function output) of the DV field for all time points identified by the baseline_filter' term.