Table 3.
Watian drinking water test grading before and after intervention in the two groups (n (%))
| Time | Test group (n=19) | Control group (n=22) | P |
|---|---|---|---|
| Before intervention | 0.811# | ||
| Grade l | 0 (0.00) | 0 (0.00) | |
| Grade ll | 3 (15.79) | 2 (9.09) | |
| Grade lll | 12 (63.16) | 14 (63.64) | |
| Grade IV or above | 4 (21.05) | 6 (27.27) | |
| After intervention | 0.010# | ||
| Grade l | 7 (36.84) | 1 (4.55) | |
| Grade ll | 6 (31.58) | 4 (18.18) | |
| Grade lll | 6 (31.58) | 13 (59.09) | |
| Grade IV or above | 0 (0.00) | 4 (18.18) | |
| P | 0.001a | 0.216a |
#
Fisher’s exact test.
a
As compared with the number of people below grade II in the same group before and after the intervention.