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. 2012 Jun 11;7(6):e38166. doi: 10.1371/journal.pone.0038166

Table 4. Percentage (number) of Secondary Influenza-Like Illness Among Household Contacts of Confirmed pH1N1 patients, by Household Contact Age and by Patient Age – Kibera and Lwak, Kenya, 2009–2010.

Location
Age Kibera Lwak
Household contact
<5 6.1% (6/98) 4.3% (21/486)
≥5 22.5% (11/49) 5.9% (18/303)
Relative Risk (95%CI a) 1.4 (0.6–3.4) 3.8 (1.9–7.5)
Patient
<5 5.0% (11/219) 3.2% (2/62)
5–15 3.3% (8/245) 11.2% (23/206)
≥15 6.7% (8/120) 4.8% (4/84)
P-valueb .33 .06
a

CI = confidence interval.

b

We calculated the p-values using chi-square tests.