Skip to main content

Table 2 Comparison of possible confounding scalar variables between control and intervention systems.

From: Impact on diarrhoeal illness of a community educational intervention to improve drinking water quality in rural communities in Puerto Rico

 

Intervention

  

Control

  

P

 

N

Mean

Std Dev

N

Mean

Std Dev

 

Children in house

485

0.55

0.89

423

0.65

0.967

0.095

Adults in house

485

2.11

1.04

423

2.33

1.14

0.002

How long lived at address

481

29.4

21.9

415

30.7

22.9

0.407

How many bedrooms

485

2.98

0.97

423

2.93

0.9

0.443

How many working cars

485

1.42

1.06

423

1.47

1.18

0.449

Crowding

484

0.95

0.57

420

1.05

0.54

0.007

Size of system

485

171.61

91.74

423

65.98

20.22

1.7 × 10-90

Age

1288

37.9

22.8

1242

37.1

22.9

0.43