| Type
of response |
Treatment with placebo |
Treatment with zinc sulphate |
| After 1 month |
After 2 months |
After 3 months |
After4months |
After 5 months |
After 6 months |
| No. |
% |
No. |
% |
No. |
% |
No. |
% |
No. |
% |
No. |
% |
| Grade 0 |
28 |
93.3 |
26 |
86.7 |
24 |
80 |
12 |
40 |
8 |
26.66 |
4 |
13.33 |
| Grade I |
0 |
0.00 |
1 |
3.3 |
3 |
10 |
9 |
30 |
5 |
16.66 |
6 |
20 |
| Grade II |
2 |
6.7 |
3 |
10 |
3 |
10 |
9 |
30 |
17 |
56.66 |
20 |
66.67 |
| Total |
30 |
100 |
30 |
100 |
30 |
100 |
30 |
100 |
30 |
100 |
30 |
100 |
|
