Pagel, C; Prost, A; Lewycka, S; Das, S; Colbourn, T; Mahapatra, R; Azad, K; ... Osrin, D; + view all Pagel, C; Prost, A; Lewycka, S; Das, S; Colbourn, T; Mahapatra, R; Azad, K; Costello, A; Osrin, D; - view fewer (2011) Intracluster correlation coefficients and coefficients of variation for perinatal outcomes from five cluster-randomised controlled trials in low and middle-income countries: results and methodological implications. Trials , 12 , Article 151. 10.1186/1745-6215-12-151.