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Table 3 Balancing checks based on selected village, household (HH), mother and child-level indicators: comparison between intervention and control groups

From: Impact evaluation of a community engagement intervention in improving childhood immunization coverage: a cluster randomized controlled trial in Assam, India

Characteristics

After randomization of all 240 baseline survey villages

After discarding villages to minimize contamination (180 villages)

 

Control

Intervention

p-value*

Control

Intervention

p-value*

Village-level indicators

 Village has subcentre

40.5

39.2

0.8334

39.8

41.7

0.7926

 Village has secondary school

31.0

25

0.3034

29.6

26

0.5833

 Village experienced flood last year

30.2

37.5

0.2359

31.6

35.4

0.5787

 % of HHs in village living more than 50 years in same village

75.9

76.5

0.6841

77.2

76.1

0.8800

 % of tribal HHs in village

26.4

26.2

0.5359

25.6

27.3

0.6494

 % of mothers in village with education HS a or more

12.3

13.1

0.6777

12.6

13.6

0.6390

 % of mothers in village receiving full antenatal care

41.9

42.1

0.936

42.5

43

0.8386

Household-level indicators

 Average HH size

5.33

5.28

0.4336

5.34

5.3

0.4867

 Household head is Muslim

27.9

32.3

0.4104

27.7

30.2

0.6453

 Household has (pour) flush toilet

35.9

33.6

0.5033

35.3

35.1

0.9965

 Household belongs to poorest wealth quintile

19.7

19.7

0.9838

20.4

17.3

0.2405

 Average time (in minutes) from household to vaccination site

19.9

20.6

0.5764

19.9

19.9

0.6037

Mother- and child-level indicators

 Mothers received full ANC when pregnant with child

41.9

41.9

0.9612

42.4

42.9

0.8787

 Child was born in health facility

85.9

86.5

0.7941

84.9

88.4

0.2184

 Child has vaccination card

92.7

92.4

0.7852

92.1

92.1

0.9731

 Child (12–23 month old) is fully immunized

78.5

77.6

0.8244

77.6

77.6

0.8479

  1. *Wilcoxon Rank Sum Test with Null Hypothesis: location parameters of the distribution are the same in each group
  2. aHS higher secondary