Table 5.

Measures of association reported for studies in which no data could be extracted

Trials	No. of students	Raw data reported	Measures of association, and statistical tests reported
Thompson 15	138	days absent per student in intervention group = 2.30 days absent per student in control group = 3.20	• Overall reduction in absenteeism due to illness was 28 percent for children using alcohol hand rub
Morton et al. 16	253	N = 211 absent overall n = 42 never absent due to illness n = 103 ill regardless of participation in the control or the AlcoSCRUB® group n = 69 ill in control group n = 39 ill in AlcoSCRUB® group	• McNemar's test for dichotomous variables with paired subjects, was used to assess strength of intervention: chi-square = 7.787; p = .0053 • Odds of being ill decreased by 43 percent with use of AlcoSCRUB®