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rgtsummary
Mathilde Storgård Bek
Mathilde Storgård Bek

Reputation: 39

tbl_merge from gtsummary package - Error: All objects in 'tbls' must be class 'gtsummary'

I'm trying to merge three regression tables (tbl_regression) using the tbl_merge function in the gtsummary package. I keep getting the error message: "All objects in 'tbls' must be class 'gtsummary'", but I cannot seem to find out how to solve the problem.

Can anyone help? Thank you!

Upvotes: 1

Views: 973

Answers (1)

Tucker M
Tucker M

Reputation: 21

In case anyone comes across this issue in the future: I've seen this before when merging tbl_summary() output. Example tables below.

t_1 <-
    mtcars %>%
    filter(am == 1) %>%
    tbl_summary()

t_2 <-
    mtcars %>%
    filter(am == 0) %>%
    tbl_summary()

In my case, I had typed the following when I encountered the error:

tbl_merge(
  tbls = c(t_1, t_2),
  tab_spanner = c("**am == 1**", "**am == 0**")
)

however, as shown in the tbl_merge documentation, the tbls= argument must be a list as below.

tbl_merge(
  tbls = list(t_1, t_2),
  tab_spanner = c("**am == 1**", "**am == 0**")
)

Upvotes: 2

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