|
Characteristic
|
Category
|
Mean counts (CFU/ml)
|
SE Mean
|
StDev
|
Range (CFU/ml)
|
Correlation coefficient (P value)
|
|---|
|
Condition of well aperture
|
Covered
|
7.19 × 102
|
82
|
1171
|
0-8.0 × 103
| |
|
Not covered
|
9.42 × 102
|
81
|
1267
|
0-7.6 × 103
|
|
Height of well casing above the ground (m)
|
0.00
|
1.00 × 103
|
274
|
1424
|
0-6.60 × 103
|
−0.023 (0.483)
|
|
0.1-0.59
|
8.58 × 102
|
92
|
1322
|
0-8.00 × 103
|
|
≥0.60
|
8.04 × 102
|
75
|
1107
|
0-7.20 × 103
|
|
Distance between wells and sanitary structure (m)
|
1.0-10.00
|
9.18 × 102
|
70
|
1262
|
0-7.6 × 103
|
−0.157 (0.000)
|
|
10.1-15.00
|
6.80 × 102
|
114
|
1186
|
0-8.0 × 103
|
|
≥15.00
|
4.16 × 102
|
119
|
506
|
3.0 × 101- 1.6 × 103
|
|
State of well
|
New
|
6.09 × 102
|
173
|
899
|
0-3.0 × 103
| |
|
Fairly old
|
6.69 × 102
|
97
|
1125
|
0-7.0 × 103
|
|
Old
|
9.50 × 102
|
77
|
1295
|
0-8.0 × 103
|
|
Presence of molded casing
|
No
|
8.78 × 102
|
134
|
1271
|
0-8.0 × 103
| |
| |
Yes
|
8.36 × 102
|
65
|
1222
|
0-7.20 × 103
| |
- Well aperture (χ2 = 9.574, df = 1, P = 0.002).Well height: TVC (χ2 = 0.767, df = 2, P = 0.682).
- Distance well-pit latrine: TVC (χ2 = 2.852, df = 2, P = 0.240). State of well (χ2 = 15.435, df = 2, P = 0.000). Well casing (χ2 = 0.387, df = 1, P = 0.534).
