CODEWITHSUNDEEP
rstatisticsanovagtsummary
Bidhya Sharma
Bidhya Sharma

Reputation: 25

How do I display test statistic (F value) for anova using tbl_summary

Here is the code that I am using to output a anova summary table with:

hiv %>% 
  select(education, sexfirsttime) %>% 
  mutate(education=
  factor(education, levels= c("no education", "primary","secondary","college"))) %>% 
  tbl_summary(missing="no", 
              by=education,
    statistic = all_continuous() ~"{mean} ({sd})", 
    label = sexfirsttime ~ "Age of first time sex") %>% 
  add_p(test= all_continuous() ~ "aov") %>% 
  modify_header(statistic ~ "**Test Statistic**")

After executing the code, I get the following error message: Error: Error in update= argument input. Select from ‘variable’, ‘test_name’, ‘var_type’, ‘var_label’, ‘row_type’, ‘label’, ‘stat_1’, ‘stat_2’, ‘stat_3’, ‘stat_4’, ‘test_result’, ‘p.value’

When I try replacing statistic in modify_header with test_result, the output that I get a bizarre output as shown is in the image.

I am fairly new to using gtsummary. Any help would be greatly appreciated. Thank you.

Upvotes: 1

Views: 1494

Answers (1)

Daniel D. Sjoberg
Daniel D. Sjoberg

Reputation: 11829

Use the most recent version of gtsummary and try again. In the most recent version, the handling of "aov" tests was made more consistent with the other tests, including returning the "statistic" column.

library(gtsummary)
packageVersion("gtsummary")
#> [1] '1.5.0'

tbl <- 
  trial %>%
  select(grade, age, marker) %>%
  tbl_summary(
    by = grade, 
    missing = "no"
  ) %>%
  add_p(all_continuous() ~ "aov") %>%
  # add a header (which also unhides a hidden column)
  modify_header(statistic ~ "**Test Statistic**") %>%
  # add a function to format the column
  modify_fmt_fun(statistic ~ style_sigfig)

enter image description here Created on 2021-10-17 by the reprex package (v2.0.1)

Upvotes: 2

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