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Table 4 Multivariate quantile regression analysis of the association between independent variables and outcome-difference in pre- and post-intervention scores among 1781 high school students in Ujjain, India

From: Effect of school-based educational water, sanitation, and hygiene intervention on student’s knowledge in a resource-limited setting

 

q10

q25

q50 (median)

q75

q90

b

(95% CI)

P value

b

(95% CI)

P value

b

(95% CI)

P value

b

(95% CI)

P value

b

(95% CI)

P value

Age (years)

          

Continuous variable

0.34

(-0.21 to 0.89)

0.222

0.50

(0.16 to 0.84)

0.004

0.60

(0.37 to 0.83)

<0.001

0.65

(0.34 to 0.96)

<0.001

0.87

(0.59 to 1.15)

<0.001

Gender

          

Boys (ref)

Girls

1.94

(0.55 to 3.34)

0.006

1.21

(0.47 to 1.95)

0.001

0.58

(-0.09 to 1.26)

0.090

0.21

(-0.48 to 0.89)

0.554

0.19

(-0.61 to 0.98)

0.648

School location

          

Urban (ref)

Rural

0.93

( -0.59 to 2.44)

0.232

1.32

(0.35 to 2.29)

0.007

2.70

(1.74 to 3.66)

<0.001

3.53

(2.67 to 4.40)

<0.001

3.98

(2.93 to 5.03)

<0.001

School type

          

Private (ref)

Public

-6.95

(-9.61 to -4.29)

<0.001

-6.74

(-7.98 to -5.50)

<0.001

-5.02

(-6.55 to -3.48)

<0.001

-4.73

(-6.03 to -3.44)

<0.001

-4.03

(-5.20 to -2.87)

<0.001

School medium

          

English(ref)

Hindi

6.70

(3.48 to 9.92)

<0.001

6.33

(4.77 to 7.90)

<0.001

3.85

(2.14 to 5.57)

<0.001

2.97

(1.47 to 4.47)

<0.001

2.26

(0.69 to 3.82)

0.005

  1. q=quantiles, b=beta coefficient, CI=Confidence Interval, ref=Reference, %=percentage