Dear all,

I would like to ask for help. I would like to add an asterisk p-value (t-value) next to my coefficients for my output with 25 regressions at once.

I might use this, but I do not know how to apply it in this case.

mystars <- ifelse(p < .0001, "*", ifelse(p < .001, " ", ifelse(p < .01, "** ", ifelse(p < .05, "* ", " "))))

I appreciate any helps. My code and data are below.

Thank you in advance.

```
#Run three-factor model for 25 portfolios
fit.lm <- function(depvar) {
mod <- lm(depvar ~ rmrf + SMB+ HML, data = reg)
return(summary(mod))
}
output.lm <- lapply(reg[,paste0(rep("p", 25),1:25)], fit.lm)
coef.list <- list()
for (i in names(output.lm)) {
coef.list[[i]] <- coef(output.lm[[i]])[,c("Estimate", "t value")] #Estimate here include intercept and coefficients
colnames(coef.list[[i]]) <- paste(i, colnames(coef.list[[i]]), sep = ".")
}
coef_reg<- do.call(cbind, coef.list)
coef_reg <- data.frame(coef_reg)
coef_reg<-coef_reg%>% mutate_if(is.numeric, ~round(., 3))
pick1<-select(coef_reg,p1.Estimate,p2.Estimate,p3.Estimate,p4.Estimate,p5.Estimate,p6.Estimate,p7.Estimate,p8.Estimate,p9.Estimate,p10.Estimate,p11.Estimate,p12.Estimate,p13.Estimate,p14.Estimate,p15.Estimate,p16.Estimate,p17.Estimate,p18.Estimate,p19.Estimate,p20.Estimate,p21.Estimate,p22.Estimate,p23.Estimate,p24.Estimate,p25.Estimate)
pick2<-select(coef_reg,p1.t.value,p2.t.value,p3.t.value,p4.t.value,p5.t.value,p6.t.value,p7.t.value,p8.t.value,p9.t.value,p10.t.value,p11.t.value,p12.t.value,p13.t.value,p14.t.value,p15.t.value,p16.t.value,p17.t.value,p18.t.value,p19.t.value,p20.t.value,p21.t.value,p22.t.value,p23.t.value,p24.t.value,p25.t.value)
#pick intercept, tvalue of 25 portfolios and arrange
intercept<-filter(pick1,row_number()==1)
intercept<- matrix(intercept, ncol = 5, byrow = TRUE)
intercept <- data.frame(intercept)
t.value<-filter(pick2,row_number()==1)
t.value<- matrix(t.value, ncol = 5, byrow = TRUE)
t.value <- data.frame(t.value)
inter_3<-cbind(intercept,t.value)
```

```
reg<-data.frame(
yearmm = c(200707,200708,200709,200710,200711,
200712,200801,200802,200803,200804),
rmrf = c(-0.12, -0.01, 0.15, 0.01, -0.09, -0.05, -0.1, -0.22, -0.23, 0),
SMB = c(0, -0.05, 0.13, 0.35, 0.02, 0.01, 0.01, -0.01, -0.03, 0),
HML = c(-0.01, 0.07, 0.09, 0.26, 0.01, 0, -0.04, 0.01, -0.1, -0.07),
RMW = c(-0.04, 0.05, -0.02, -0.02, 0.03, 0, -0.04, -0.01, -0.06, 0.01),
CMA = c(0.02, -0.04, 0.01, 0.04, 0.01, 0.01, 0.01, -0.05, -0.03, -0.04),
UMD = c(-0.04, 0.11, 0.05, 0.04, 0.05, -0.07, -0.06, 0.06, -0.08, -0.1),
p1 = c(-0.1,-0.02,0.3,1.04,-0.16,-0.03,-0.07,
-0.38,-0.3,-0.07),
p2 = c(-0.14,0.01,0.44,0.54,-0.1,-0.04,-0.13,
-0.16,-0.19,0.06),
p3 = c(-0.14,0.02,0.26,0.48,-0.14,-0.02,
-0.13,-0.16,-0.22,-0.06),
p4 = c(-0.07,-0.07,0.22,0.65,-0.07,-0.05,
-0.16,-0.23,-0.28,0.01),
p5 = c(-0.06, -0.08, 0.45, 0.83, 0, -0.01, -0.15, -0.29, -0.38, 0.01),
p6 = c(-0.14,-0.01,0.31,0.8,-0.08,-0.06,0.09,
-0.36,-0.34,-0.08),
p7 = c(-0.03,0.04,0.16,0.27,-0.04,-0.05,
-0.09,-0.2,-0.28,-0.03),
p8 = c(-0.08,0.02,0.18,0.36,-0.11,-0.04,
-0.09,-0.22,-0.22,-0.07),
p9 = c(-0.12,0.01,0.28,0.58,-0.07,-0.08,
-0.16,-0.17,-0.4,-0.16),
p10 = c(-0.09, -0.05, 0.32, 0.62, -0.08, -0.05, 0, -0.21, -0.37, -0.11),
p11 = c(0.02, -0.07, 0.25, 0.4, 0, 0.04, -0.05, -0.18, -0.25, -0.11),
p12 = c(-0.1, 0, 0.17, 0.17, -0.11, -0.05, -0.15, -0.16, -0.25, -0.04),
p13 = c(-0.1,-0.05,0.18,0.47,-0.09,-0.08,
-0.05,-0.23,-0.2,-0.02),
p14 = c(-0.11,0.09,0.13,0.22,-0.06,-0.05,
-0.12,-0.19,-0.3,-0.02),
p15 = c(-0.04,-0.15,0.12,0.63,-0.13,-0.02,
-0.22,-0.27,-0.36,-0.11),
p16 = c(-0.17,-0.04,0.24,0.26,-0.12,-0.05,
-0.12,-0.24,-0.25,-0.04),
p17 = c(-0.07,-0.02,0.14,0.29,-0.11,-0.08,
-0.11,-0.18,-0.23,-0.09),
p18 = c(-0.08,-0.01,0.14,0.06,-0.11,-0.03,
-0.08,-0.21,-0.23,0.04),
p19 = c(-0.21,0.27,0.04,0.07,-0.06,-0.07,
-0.11,-0.24,-0.31,-0.11),
p20 = c(-0.11, 0.02, 0.07, 0.15, -0.07, -0.05, -0.13, -0.25, -0.25, 0),
p21 = c(-0.02,0.05,0.16,0.08,-0.08,-0.09,
-0.08,-0.19,-0.21,-0.11),
p22 = c(0.04, 0, 0.14, 0.04, -0.11, -0.09, -0.07, -0.24, -0.17, 0.04),
p23 = c(-0.07, 0, 0.08, 0.03, -0.07, -0.06, -0.08, -0.22, -0.21, 0.03),
p24 = c(-0.11, 0.07, 0.1, 0.04, -0.1, -0.02, -0.1, -0.23, -0.28, -0.04),
p25 = c(-0.03,-0.02,0.12,-0.01,-0.06,-0.05,
-0.12,-0.33,-0.32,-0.09)
)
```