Description Usage Arguments Value Examples

Predictors are the independent variables which you want to vary as a factor
in your statistical models across different groups, outcomes, and stats.
Predictors can be supplied as individual variables or as collections of
variables, so we refer to a unit of predictors as a "predictor".
This function supports both string inputs and actual variables. This function
also supports tidy-selection functions like `contains`

and `starts_with`

which
allows convenient selection of many variables at once with common names.

1 | ```
set_predictors(object, ..., labels = NULL)
``` |

`object` |
An aba model. The model for which you want to set predictors |

`...` |
strings or variables or tidy-selection functions. Each comma-separated value will be a new predictor set. If you supply actual variables, then the data of the aba model should already be set. |

`labels` |
vector of strings. Optional labels for printing & plotting. |

An aba model with predictors set.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 | ```
data <- adnimerge %>% dplyr::filter(VISCODE == 'bl')
# set with variables - this will result in four "predictor sets".
model <- aba_model() %>%
set_data(data) %>%
set_predictors(
PLASMA_ABETA_bl,
PLASMA_PTAU181_bl,
PLASMA_NFL_bl,
c(PLASMA_ABETA_bl, PLASMA_PTAU181_bl, PLASMA_NFL_bl)
)
# set with tidy selection functions - but this is only one "predictor set",
# not multiple individual predictor sets.
model <- aba_model() %>%
set_data(data) %>%
set_predictors(
starts_with('PLASMA')
)
# automatically generate all possible combinations of variables
model <- aba_model() %>%
set_data(data) %>%
set_predictors(
all_combos(c('PLASMA_ABETA_bl', 'PLASMA_PTAU181_bl', 'PLASMA_NFL_bl'))
)
# supply strings - data does not need to be set first here. But it will
# result in an error if these variables do not éxist in the eventual data.
model <- aba_model() %>%
set_data(data) %>%
set_predictors(
'PLASMA_ABETA_bl',
'PLASMA_PTAU181_bl',
'PLASMA_NFL_bl',
c('PLASMA_ABETA_bl', 'PLASMA_PTAU181_bl', 'PLASMA_NFL_bl')
)
``` |

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