I have adapted the solution to align forest plot and a table from this post:
how to align table with forest plot (ggplot2)
Here is my code:
library(dplyr, warn = FALSE)
library(ggplot2)
library(patchwork)
tester <- data.frame(
treatmentgroup = c("Education Continuous", "0", "1-4",
"5-8", ">8"),
or = c(0.914, 0.961, 0.709, 0.523, 0.457),
low_ci = c(0.894, 0.793, 0.577, 0.389, 0.339),
up_ci = c(0.935, 1.166, 0.871, 0.708, 0.616),
OR_ci = c(
"0.914 (0.894; 0.935)", "0.961 (0.793; 1.166)", "0.709 (0.577; 0.871)",
"0.523 (0.389; 0.708)", "0.457 (0.339; 0.616)"),
ci = c(
"0.894; 0.935",
"0.793; 1.166",
"0.577; 0.871",
"0.389; 0.708",
"0.339; 0.616"),
no = c(1, 2, 3, 4, 5)
)
forest <- ggplot(
data = tester,
aes(x = treatmentgroup, y = or, ymin = low_ci, ymax = up_ci))
geom_pointrange(aes(col = treatmentgroup))
geom_hline(yintercept = 1, colour = "black")
xlab("")
ylab("OR (95% CI)")
geom_errorbar(aes(ymin = low_ci, ymax = up_ci, col = treatmentgroup), width = 0, cex = 1)
theme_classic()
theme(
panel.background = element_blank(), strip.background = element_rect(colour = NA, fill = NA),
strip.text.y = element_text(face = "bold", size = 12),
panel.grid.major.y = element_line(colour = col_grid, size = 0.5),
strip.text = element_text(face = "bold"),
panel.border = element_rect(fill = NA, color = "black"),
legend.position = "none",
axis.text = element_text(face = "bold"),
axis.title = element_text(face = "bold"),
plot.title = element_text(face = "bold", hjust = 0.5, size = 13)
)
coord_flip()
dat_table <- tester %>%
select(treatmentgroup, OR_ci) %>%
tidyr::pivot_longer(c(OR_ci), names_to = "stat") %>%
mutate(stat = factor(stat, levels = "OR_ci"))
table_base <- ggplot(dat_table, aes(stat, treatmentgroup, label = value))
geom_text(size = 3)
scale_x_discrete(position = "top", labels = "OR (95% CI)")
labs(y = NULL, x = NULL)
theme_classic()
theme(
strip.background = element_blank(),
panel.grid.major = element_blank(),
panel.border = element_blank(),
axis.line = element_blank(),
axis.text.y = element_blank(),
axis.text.x = element_text(size = 12),
axis.ticks = element_blank(),
axis.title = element_text(face = "bold"),
)
forest table_base plot_layout(widths = c(10, 4))
However, my graph ends up with the categories out of order. How can I adjust the order to this one: Education Continuous, 0, 1-4, 5-8, and >8?
I tried factor(tester$treatmentgroup)
but it did not work.
Also, how can I make all the categories the same color (black, for example) instead of one each color? I tried eliminating the line geom_pointrange(aes(col = treatmentgroup))
but it does not work.
CodePudding user response:
You're right that you can convert treatmentgroup
to a factor, you just need to specify the levels. Try running this code before you generate your plots with ggplot()
.
tester <- tester %>%
mutate(treatmentgroup = factor(treatmentgroup,
levels = c(">8", "5-8", "1-4", "0", "Education Continuous")))