Exporting tables and plots

Ewen Harrison

finalfit makes it easy to export final results tables and plots from RStudio to Microsoft Word and PDF.

Make sure you are on the most up-to-date version of finalfit.

install.packages("finalfit")

What follows is for demonstration purposes and is not meant to illustrate model building. We will ask, does a particular characteristic of a tumour (differentiation) predict 5-year survival?

Explore data

First explore variable of interest (exposure) by making it the dependent.

library(finalfit)
library(dplyr)

dependent = "differ.factor"

# Specify explanatory variables of interest
explanatory = c("age", "sex.factor", 
  "extent.factor", "obstruct.factor", 
  "nodes")

Note this useful alternative way of specifying explanatory variable lists:

colon_s %>% 
  select(age, sex.factor, extent.factor, obstruct.factor, nodes) %>% 
  names() -> explanatory

Check data.

colon_s %>% 
  ff_glimpse(dependent, explanatory)
#> Continuous
#>             label       var_type   n missing_n missing_percent mean   sd
#> age   Age (years) <S3: labelled> 929         0             0.0 59.8 11.9
#> nodes       nodes          <dbl> 911        18             1.9  3.7  3.6
#>        min quartile_25 median quartile_75  max
#> age   18.0        53.0   61.0        69.0 85.0
#> nodes  0.0         1.0    2.0         5.0 33.0
#> 
#> Categorical
#>                            label var_type   n missing_n missing_percent
#> sex.factor                   Sex    <fct> 929         0             0.0
#> obstruct.factor      Obstruction    <fct> 908        21             2.3
#> differ.factor    Differentiation    <fct> 906        23             2.5
#> extent.factor   Extent of spread    <fct> 929         0             0.0
#>                 levels_n
#> sex.factor             2
#> obstruct.factor        2
#> differ.factor          3
#> extent.factor          4
#>                                                                 levels
#> sex.factor                                            "Female", "Male"
#> obstruct.factor                               "No", "Yes", "(Missing)"
#> differ.factor                  "Well", "Moderate", "Poor", "(Missing)"
#> extent.factor   "Submucosa", "Muscle", "Serosa", "Adjacent structures"
#>                     levels_count         levels_percent
#> sex.factor              445, 484                 48, 52
#> obstruct.factor     732, 176, 21       78.8, 18.9,  2.3
#> differ.factor   93, 663, 150, 23 10.0, 71.4, 16.1,  2.5
#> extent.factor   21, 106, 759, 43  2.3, 11.4, 81.7,  4.6

Demographics table

Look at associations between our exposure and other explanatory variables. Include missing data.

colon_s %>% 
  summary_factorlist(dependent, explanatory, 
  p=TRUE, na_include=TRUE)
label levels Well Moderate Poor p
Age (years) Mean (SD) 60.2 (12.8) 59.9 (11.7) 59 (12.8) 0.788
Sex Female 51 (11.6) 314 (71.7) 73 (16.7) 0.400
Male 42 (9.0) 349 (74.6) 77 (16.5)
Extent of spread Submucosa 5 (25.0) 12 (60.0) 3 (15.0) 0.081
Muscle 12 (11.8) 78 (76.5) 12 (11.8)
Serosa 76 (10.2) 542 (72.8) 127 (17.0)
Adjacent structures 0 (0.0) 31 (79.5) 8 (20.5)
Obstruction No 69 (9.7) 531 (74.4) 114 (16.0) 0.110
Yes 19 (11.0) 122 (70.9) 31 (18.0)
Missing 5 (25.0) 10 (50.0) 5 (25.0)
nodes Mean (SD) 2.7 (2.2) 3.6 (3.4) 4.7 (4.4) <0.001

Note missing data in obstruct.factor. See a full description of options in the forthcoming missing data vignette.

We will drop this variable for now. Also see that nodes has not been labelled. There are small numbers in some variables generating chisq.test warnings (predicted less than 5 in any cell). Generate final table.

Hmisc::label(colon_s$nodes) = "Lymph nodes involved"
explanatory = c("age", "sex.factor", 
  "extent.factor", "nodes")

colon_s %>% 
  summary_factorlist(dependent, explanatory, 
  p=TRUE, na_include=TRUE, 
  add_dependent_label=TRUE) -> table1
table1
Dependent: Differentiation Well Moderate Poor p
Age (years) Mean (SD) 60.2 (12.8) 59.9 (11.7) 59 (12.8) 0.788
Sex Female 51 (11.6) 314 (71.7) 73 (16.7) 0.400
Male 42 (9.0) 349 (74.6) 77 (16.5)
Extent of spread Submucosa 5 (25.0) 12 (60.0) 3 (15.0) 0.081
Muscle 12 (11.8) 78 (76.5) 12 (11.8)
Serosa 76 (10.2) 542 (72.8) 127 (17.0)
Adjacent structures 0 (0.0) 31 (79.5) 8 (20.5)
Lymph nodes involved Mean (SD) 2.7 (2.2) 3.6 (3.4) 4.7 (4.4) <0.001

Logistic regression table

Now examine explanatory variables against outcome. Check plot runs ok.

explanatory = c("age", "sex.factor", 
  "extent.factor", "nodes", "differ.factor")
dependent = "mort_5yr"
colon_s %>% 
  finalfit(dependent, explanatory, 
  dependent_label_prefix = "") -> table2
table2
Mortality 5 year Alive Died OR (univariable) OR (multivariable)
Age (years) Mean (SD) 59.8 (11.4) 59.9 (12.5) 1.00 (0.99-1.01, p=0.986) 1.01 (1.00-1.02, p=0.195)
Sex Female 243 (47.6) 194 (48.0) - -
Male 268 (52.4) 210 (52.0) 0.98 (0.76-1.27, p=0.889) 0.98 (0.74-1.30, p=0.885)
Extent of spread Submucosa 16 (3.1) 4 (1.0) - -
Muscle 78 (15.3) 25 (6.2) 1.28 (0.42-4.79, p=0.681) 1.28 (0.37-5.92, p=0.722)
Serosa 401 (78.5) 349 (86.4) 3.48 (1.26-12.24, p=0.027) 3.13 (1.01-13.76, p=0.076)
Adjacent structures 16 (3.1) 26 (6.4) 6.50 (1.98-25.93, p=0.004) 6.04 (1.58-30.41, p=0.015)
Lymph nodes involved Mean (SD) 2.7 (2.4) 4.9 (4.4) 1.24 (1.18-1.30, p<0.001) 1.23 (1.17-1.30, p<0.001)
Differentiation Well 52 (10.5) 40 (10.1) - -
Moderate 382 (76.9) 269 (68.1) 0.92 (0.59-1.43, p=0.694) 0.70 (0.44-1.12, p=0.132)
Poor 63 (12.7) 86 (21.8) 1.77 (1.05-3.01, p=0.032) 1.08 (0.61-1.90, p=0.796)

Odds ratio plot

colon_s %>% 
  or_plot(dependent, explanatory, 
  breaks = c(0.5, 1, 5, 10, 20, 30))

MS Word via knitr/R Markdown

Important. In most R Markdown set-ups, environment objects require to be saved and loaded to R Markdown document.

# Save objects for knitr/markdown
save(table1, table2, dependent, explanatory, file = "out.rda")

We use RStudio Server Pro set-up on Ubuntu. But these instructions should work fine for most/all RStudio/Markdown default set-ups.

In RStudio, select File > New File > R Markdown.

A useful template file is produced by default. Try hitting knit to Word on the knitr button at the top of the .Rmd script window.

Now paste this into the file:

---
title: "Example knitr/R Markdown document"
author: "Ewen Harrison"
date: "22/5/2018"
output:
  word_document: default
---
```{r setup, include=FALSE}
# Load data into global environment. 
library(finalfit)
library(dplyr)
library(knitr)
load("out.rda")
```

## Table 1 - Demographics
```{r table1, echo = FALSE, results='asis'}
kable(table1, row.names=FALSE, align=c("l", "l", "r", "r", "r", "r"))
```

## Table 2 - Association between tumour factors and 5 year mortality
```{r table2, echo = FALSE, results='asis'}
kable(table2, row.names=FALSE, align=c("l", "l", "r", "r", "r", "r"))
```

## Figure 1 - Association between tumour factors and 5 year mortality
```{r figure1, echo = FALSE}
colon_s %>% 
  or_plot(dependent, explanatory)

The result is ok, but not great.

Create Word template file

Now, edit your Word file to create a new template. Click on a table. The style should be compact. Right click > Modify… > font size = 9. Alter heading and text styles in the same way as desired. Save this as template.docx. Upload the file to your project folder. Add this reference to the .Rmd YAML heading, as below. Make sure you get the spacing correct.

The plot also doesn’t look quite right and it prints with warning messages. Experiment with fig.width to get it looking right.

Now paste this into your .Rmd file and run:

---
title: "Example knitr/R Markdown document"
author: "Ewen Harrison"
date: "21/5/2018"
output:
  word_document:
    reference_docx: template.docx  
---
```{r setup, include=FALSE}
# Load data into global environment. 
library(finalfit)
library(dplyr)
library(knitr)
load("out.rda")
```

## Table 1 - Demographics
```{r table1, echo = FALSE, results='asis'}
kable(table1, row.names=FALSE, align=c("l", "l", "r", "r", "r", "r"))
```

## Table 2 - Association between tumour factors and 5 year mortality
```{r table2, echo = FALSE, results='asis'}
kable(table2, row.names=FALSE, align=c("l", "l", "r", "r", "r", "r"))
```

## Figure 1 - Association between tumour factors and 5 year mortality
```{r figure1, echo = FALSE, warning=FALSE, message=FALSE, fig.width=10}
colon_s %>% 
  or_plot(dependent, explanatory)
```

This is now looking good, and further tweaks can be made if you wish.

PDF via knitr/R Markdown

Default settings for PDF:

---
title: "Example knitr/R Markdown document"
author: "Ewen Harrison"
date: "21/5/2018"
output:
  pdf_document: default
---
```{r setup, include=FALSE}
# Load data into global environment. 
library(finalfit)
library(dplyr)
library(knitr)
load("out.rda")
```

## Table 1 - Demographics
```{r table1, echo = FALSE, results='asis'}
kable(table1, row.names=FALSE, align=c("l", "l", "r", "r", "r", "r"))
```

## Table 2 - Association between tumour factors and 5 year mortality
```{r table2, echo = FALSE, results='asis'}
kable(table2, row.names=FALSE, align=c("l", "l", "r", "r", "r", "r"))
```

## Figure 1 - Association between tumour factors and 5 year mortality
```{r figure1, echo = FALSE}
colon_s %>% 
  or_plot(dependent, explanatory)
```

Again, this is not bad, but has issues.

We can fix the plot in exactly the same way. But the table is off the side of the page. For this we use the ’kableExtra` package. Install this in the normal manner. You may also want to alter the margins of your page using geometry in the preamble.

---
title: "Example knitr/R Markdown document"
author: "Ewen Harrison"
date: "21/5/2018"
output:
  pdf_document: default
geometry: margin=0.75in
---
```{r setup, include=FALSE}
# Load data into global environment. 
library(finalfit)
library(dplyr)
library(knitr)
library(kableExtra)
load("out.rda")
```

## Table 1 - Demographics
```{r table1, echo = FALSE, results='asis'}
kable(table1, row.names=FALSE, align=c("l", "l", "r", "r", "r", "r"),
                        booktabs=TRUE)
```

## Table 2 - Association between tumour factors and 5 year mortality
```{r table2, echo = FALSE, results='asis'}
kable(table2, row.names=FALSE, align=c("l", "l", "r", "r", "r", "r"),
            booktabs=TRUE) %>% 
    kable_styling(font_size=8)
```

## Figure 1 - Association between tumour factors and 5 year mortality
```{r figure1, echo = FALSE, warning=FALSE, message=FALSE, fig.width=10}
colon_s %>% 
  or_plot(dependent, explanatory)

This is now looking pretty good for me as well.

There you have it. A pretty quick workflow to get final results into Word and a PDF.