Table 2: Relationship between fluoride concentration in drinking and cooking water and dental fluorosis (n=70).
|
Fluoride concentration (mg/l) |
Dental fluorosis |
Total |
P value |
RR (95% CI) |
|
|
Present No. (%) |
Absent No. (%) |
No. (%) |
|||
|
Drinking water 0.21 – 3.0 < 0.20 |
10 (45.5) 9 (18.7) |
12 (54.5) 39 (81.3) |
22 (100.0) 48 (100.0) |
0.04
|
3.61 (1.19, 10.95) Ref |
|
Total |
19 (27.1) |
51 (72.9) |
70 (100.0) |
|
|
|
Cooking water 0.21 – 4.0 < 0.20 |
8 (40.0) 11 (22.0) |
12 (60.0) 39 (78.0) |
20 (100.0) 50 (100.0) |
0.15
|
2.36 (0.77, 7.22) Ref |
|
Total |
19 (27.1) |
51 (72.9) |
70 (100.0) |
|
|
RR: Relative Risk; Ref: Reference category.