I am trying to print the "result" of using `table` function, but when I tried to use the code here, I got something very strange:

```
    for (i in 1:4){
  print (table(paste("group",i,"$", "BMI_obese",sep=""), paste("group",i,"$","A1.1", sep="")))
}

```

This is the result in R output:

```
                 group1$A1.1
group1$BMI_obese           1

                 group2$A1.1
group2$BMI_obese           1

                 group3$A1.1
group3$BMI_obese           1

                 group4$A1.1
group4$BMI_obese           1

```

But when I type out the statement without typing inside the loop:

```
table(group2$BMI_obese, group2$A1.1)

```

I got what I want:

```
   1  2  3  4  5
0 51 20  9  8  0
1 37 20 15  6  4

```

Does anyone know which part of my `for` loop code is not correct or can be modified to fit my purpose of printing the loop `table` result?

Hi, all but now I have another problem. I am trying to add an inner loop which will take the column name as an argument, because I would like to loop through mulitiple column for each of the group data (i.e. for group1, I would like to have table of BMI\_obese vs A1.1, BMI\_obese vs A1.2 ... BMI\_obese vs A1.15. This is my code, but somehow it is not working, I think it is because it is not recognizing the A1.1, A1.2,... as an column taking from the data group1, group2, group3, group4. But instead it is treated as a string I think. I am not sure how to fix it:
 for (i in 2:4) { 
 for (j in c("A1.1","A1.2"))  

 {
 print(with(get(paste0("group", i)),table(BMI\_obese,j))) 

```
            }               
        }   

```

I keep getting this error message:
Error in table(BMI\_obese, j) : all arguments must have the same length