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Table 2 Relative risks of school characteristics associated with full or partial delivery, compared to non-delivery, of the education program (n=178 schools)

From: Implementation of an educational intervention to improve hand washing in primary schools: process evaluation within a randomised controlled trial

  

Univariable

Adjusted

 

%

RR (95% CI)

p value

aRR (95% CI)

p value

Study allocation

     

  Control

37.8

ref

 

ref

 

  Intervention

85.2

2.26 (1.71, 2.98)

<0.001

2.21 (1.69, 2.90)

<0.001

Area

     

  Bristol

42.9

ref

 

ref

 

  Bath and North East Somerset

94.4

2.20 (1.41, 3.43)

<0.001

2.22 (1.39, 3.56)

0.001

  North Somerset

63.6

1.48 (0.90, 2.45)

0.122

1.41 (0.89, 2.27)

0.143

  South Gloucestershire

53.9

1.26 (0.72, 2.20)

0.423

1.06 (0.65, 1.74)

0.807

  Swindon

60.0

1.40 (0.80, 2.45)

0.238

1.56 (0.89, 2.70)

0.118

  Wiltshire

62.3

1.45 (0.90, 2.34)

0.125

1.46 (0.90, 2.35)

0.126

Involved in substudy

     

  No

60.4

ref

 

ref

 

  Yes

66.7

1.10 (0.81, 1.51)

0.534

1.43 (1.04, 1.98)

0.030

Number of pupils

     

  194 or less

60.2

ref

 

ref

 

  >194

62.4

1.04 (0.82, 1.31)

0.770

1.01 (0.83, 1.24)

0.903

Proportion eligible for free school meals

     

  6.4% or less

65.2

ref

 

ref

 

  >6.4%

57.3

0.88 (0.69, 1.11)

0.285

0.88 (0.71, 1.08)

0.219

  1. Note. Adjusted model includes all variables in table; CI confidence interval, RR relative risk, aRR adjusted relative risk, ref reference category.