Groups

Chi-square

I

II

III

X²

P-value

CAL

1 - 2 mm

41 (82%)

38 (76%)

26 (52%)

8.89

0.01

3 - 4 mm

9 (18%)

10 (20%)

18 (36%)

≥5 mm

0 (0%)

2 (4%)

6 (12%)

PPD

≤4 mm

48 (96%)

46 (92%)

40 (80%)

8.14

0.02

≤5 mm

2 (4%)

3 (6%)

5 (10%)

>5 mm

0 (0%)

1 (2%)

5 (10%)