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Table 4 Absences due to communicable illness, cumulative incidence rates and percent relative effects of an alcoholic rinse-free hand sanitizer

From: A systematic review of the effectiveness of antimicrobial rinse-free hand sanitizers for prevention of illness-related absenteeism in elementary school children

  

Intervention

Control

 

Trials

No. of students

No. of absences (No. of students)

Absenteeism risk

No. of absences (No. of students)

Absenteeism risk

Percent Relative Effect (95% CI)*

Hammond et al. 31

6080

7441.5 (3075)

2.42

9066 (3005)

3.02

20 (19, 21)

Guinan et al. 10

290

140 (145)

0.97

277 (145)

1.91

49 (42, 56)

  1. * Percent relative effect = (1- intervention risk/control risk) *100
  2. 95 percent confidence interval = (1–95% UCL of Risk Ratio)*100 to (1–95% LCL of Risk Ratio)*100