stat

Fecal coliform

E. coli 1

P.

earuginosa

K.

pneumoneae

Salmonela

sp

S.

aureus

S.

pneumoneae

Vibrio

cholera

B.

cepaceae

Presence of Latrine or septic tank soak-away within 10 m of the wells

odds Ratio

0.14

8.8

2

4

10

11

1.4

0.25

3.6

(x²) pv

(0.04) 4.02

(0.05) 3.6

(0.4) 0.5

(0.1) 2.3

(0.02) 3.4

(0.03) 4

(0.7) 0.1

(0.2) 1.6

(0.3) 1.03

95% (CL)

0.02 - 1.03

0.77 - 100

0.33 - 11.7

0.63 - 25

1.3 - 78

1.1 - 120

0.16

0.3 - 2.2

0.26 - 46.5

Fencing around the well inadequate to keep animals away

odds Ratio

0.5

1.1

0.6

2.6

0.4

2.6

0.5

10

3.6

(x²) pv

(0.4) 0.5

(0.9) 0.01

(0.6) 0.2

(0.2) 1.1

(0.3) 0.9

(0.4) 0.9

(0.5) 0.4

(0.06) 3.6

(0.3) 1.01

95% (CL)

0.09 - 3.1

0.14 - 8.6

0.11 - 3.7

0.44 - 16

0.06 - 2.7

0.4 - 17.8

0.04

0.78 - 12

0.3 - 46.4

Absence of apron wall less than 1 m

odds

1.2

1.12

0.57

1.2

2.67

4

0.64

4

1.2

(x²) pv

(0.8) 0.04

(0.5) 0.4

(0.5) 0.4

(0.8) 0.04

(0.2) 1.2)

(0.1) 2.6

(0.03) 4.5

(0.2) 0.6

(0.8) 0.02

95%

0.22 - 6.7

0.25 - 14.9

0.1 - 3.2

0.23 - 6.7

0.43 - 6.4

0.7 - 33.7

0.41 - 0.9

0.44 - 70.8

0.4 - 11.9

Poor depth and lack of internal lining

odds Ratio

0.8

2.5

0.9

1.75

0.7

3.5

0.37

0.63

1.8

(x²) pv

(0.1)

(0.3) 0.8

(0.8) 0.02

(0.5) 0.4

(0.6) 0.2

(0.2) 1.7

(0.4) 0.6)

(0.7) 0.2

(0.05) 3.6

95% (CL)

0.14 - 4.5

0.32 - 19.5

0.16 - 5.1

0.31 - 10

0.12 - 11.3

0.5 - 24.3

0.03 - 4.4

0.073 - 3.3

1.0 - 3.2

Abandoned materials inside the wells

odds Ratio

0.24

1.9

0.57

2.62

2.67

6.39

0.31

1.6

2.5

(x²) pv

(0.1) 2.3

(0.5) 0.4

(0.5) 0.4

(0.2) 1.1

(0.2) 1.1

(01) 6

(0.03) 4.4

(0.7) 0.9

(0.4) 0.51

95% (CL)

0.39 - 1.5

0.25 - 14.9

0.1 - 3.2

0.45 - 15.3

0.43 - 16.3

1.4 - 174

0.41

0.19 - 13.7

0.19 - 32.9

Farming activities near the wells

odds

0.37

3.11

3.7

0.86

2.57

2.5

0.55

1.2

1.2

(x²) pv

(0.2) 1.1

(0.3) 0.9

(0.01) 2.03

(0.8) 0.03

(0.3) 0.9

(0.8) 0.3

(0.3) 0.5

(0.8) 0.05

(0.9) 0.024

95% (CL)

0.6 - 2.3

0.28 - 34.4

0.58 - 23.9

0.15 - 4.9

0.37 - 17.8

0.4 - 13.9

0.06

0.16 - 9.9

0.1 - 11.9

Poor drainage around the wells that can allow water to stand

odds Ratio

0.14

8.8

4.9

1.75

3.7

3.5

0.37

ncv

ncv

(x²) pv

(0.04) 4.1

(0.05) 3.6

(0.01) 2.7

(0.5) 0.4

(0.01) 2.03

(0.2) 1.6

(0.4) 0.6

(0.05) 3.6

(0.2) 1.1

95% (CL)

0.02 - 1

0.77 - 100

0.70 - 34.3

0.31 - 10

0.59 - 23.9

0.5 - 24

0.03 - 11.3

0.2 - 89

0.42 - 0.9

Uncapped wells

odds Ratio

1.9

Nvc

0.4

0.67

1.1

0.9

0.75

nvc

nvc

(x²) pv

(0.5) 0.4

(0.02) 2.05

(0.3) 0.8

(0.6) 0.2

(0.9) 0.01

(0.9) 0.01

(0.2) 1.5

(0.7) 3.6

(0.16) 1.9

95% (CL)

0.25 - 14.9

0.05 - 3.1

0.08 - 5.1

0.14 - 8.7

0.1 - 7

0.56

0.2 - 0.9

0.41 - 0.9