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Table 1 Intracluster correlation coefficient (ICC) for prevalence of P. falciparum infection at baseline by country, using exact calculation approach

From: Intracluster correlation coefficients in the Greater Mekong Subregion for sample size calculations of cluster randomized malaria trials

Country

N

Intra-cluster correlation coefficient (ICC), 95% CI

Model without covariates

Model with covariates: sex, age

Vietnam

2301

0.003 (0.000, 0.009)

0.004 (0.000, 0.011)

Cambodia

1244

0.005 (0.000, 0.013)

0.006 (0.000, 0.014)

Myanmar

1539

0.035 (0.016, 0.054)

0.034 (0.015, 0.054)

Laos

1661

0.082 (0.056, 0.108)

0.081 (0.056, 0.107)