Bulletin of the World Health Organization

Factors associated with the safety of voluntary medical male circumcision in Nyanza province, Kenya

Amy Herman-Roloff, Robert C Bailey & Kawango Agot

Volume 90, Number 10, October 2012, 773-781

Table 2. Agreement in adverse event detection between clinic surveillance system and active surveillance system, Nyanza province, Kenya, 2008–2010

Clinic system	Active system		Total
Clinic system	Adverse event reported	Adverse event not reported	Total
Adverse event reported	12	16	28
Adverse event not reported	56	593	649
Total	68	609	677^a

^a Per cent agreement between systems = 89.4 (605 ÷ 677 = 0.8936); κ statistic = 0.20 (95% confidence interval: 0.09–0.32); McNemar's Χ² for dependent proportions = 21.13; P < 0.001.