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. 2008 Apr 23;7:17. doi: 10.1186/1476-072X-7-17

Table 1.

Key statistics on diarrhea prevalence in Benin. Ib is the "variance between" clusters or municipalities. Iw is the "variance within" clusters or municipalities.

Statistic Value (t-statistics) % of total
Mean 0.143 Not applicable
Variance 0.098 Not applicable
Cluster class Ib 0.015 (9.73) 14
Iw 0.091 (16.39) 86
Commune class Ib 0.008 (6.06) 8
Iw 0.092 (8.81) 92