я есть следующие данные:

trait,beta,se,p,analysis,signif
trait1,0.078,0.01,9.00E-13,group1,1
trait2,0.076,0.01,1.70E-11,group1,1
trait3,-0.032,0.01,0.004,group1,0
trait4,0.026,0.01,0.024,group1,0
trait5,0.023,0.01,0.037,group1,0
trait1,0.042,0.01,4.50E-04,group2,1
trait2,0.04,0.01,0.002,group2,1
trait3,0.03,0.01,0.025,group2,0
trait4,0.025,0.01,0.078,group2,0
trait5,0.015,0.01,0.294,group2,0
trait1,0.02,0.01,0.078,group3,0
trait2,0.03,0.01,0.078,group3,0
trait3,0.043,0.01,1.90E-04,group3,0
trait4,0.043,0.01,2.40E-04,group3,1
trait5,0.029,0.01,0.013,group3,0

И сделайте сюжет со следующим кодом:

library(ggplot2)
ggplot(GEE, aes(y=beta, x=reorder(trait, beta), group=analysis)) + 
  geom_point(data = GEE[GEE$signif == 1, ],
             color="red",
             shape = "*", 
             size=12, 
             show.legend = F) +
  geom_point(aes(color=analysis)) +
  geom_errorbar(aes(ymin=beta-2*se, ymax=beta+2*se,color=analysis), width=.2,
                position=position_dodge(.2)) +
  geom_hline(yintercept = 0) +
  theme_light() +
  theme(axis.title.y=element_blank(),
        legend.title=element_blank()) +
  coord_flip() 

Что дает мне следующий сюжет:

Я хотел бы добавить дополнительный элемент к легенде, а именно красную звездочку, и я хочу, чтобы он сказал «значительный». Как мне это сделать?

PS. Если вам нравится этот кусок кода, у меня есть другая проблема, указаннаяВот :)