Table 1 Self-reported knowledge about the critical time of hand washing (%)
Critical times | Survey year | Relative difference and p value | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Â | 2006 | 2009 | 2011 | 2006-2009 | 2009-2011 | 2006-2011 | |||
| Â | Yes | No | Yes | No | Yes | No | Â | Â | Â |
Before taking meal | 92.2 | 7.8 | 97.0 | 3.0 | 97.3 | 2.7 | 5.21 (P<0.01) | 0.31 (ns) | 5.1 (P<0.01) |
Before serving food | 10.8 | 89.2 | 11.3 | 88.7 | 13.6 | 86.4 | 4.63 (ns) | 20.35 (P<0.01) | 2.8 (P<0.01) |
Before cooking | 30.4 | 69.6 | 44.3 | 55.7 | 40.0 | 60.0 | 45.72 (P<0.01) | −9.71 (P<0.01) | 10.4 (P<0.01) |
After defecation | 90.8 | 9.2 | 95.8 | 4.2 | 96.9 | 3.1 | 5.51 (P<0.01) | 1.15 (P<0.01) | 6.1 (P<0.01) |
Before feeding babies | 5.8 | 94.2 | 5.2 | 94.8 | 7.2 | 92.8 | −10.34 (ns) | 38.46 (P<0.01) | 1.4 (P<0.01) |
After cleaning child’s stool | 10.8 | 89.2 | 9.3 | 90.7 | 16.7 | 83.3 | −13.89 (P<0.01) | 79.57 (P<0.01) | 6.0 (P<0.01) |
N | 26,404 | Â | Â | Â | |||||