Table 1 sample size calculations

Detectable difference in SBP between both the groups

80% power with an ICC of 0.02

90% power with an ICC of 0.02

Sample size required for individual randomization per arm

Sample size required for cluster randomization per arm (DE = 2.98)

Sample size required for cluster randomization with CV = 0.25 (DE = 3.1)

Minimum no of clusters with a cluster size of 100

Sample size required for individual randomization per arm

Sample size required for cluster randomization per arm (DE = 2.98)

Sample size required for cluster randomization with CV = 0.25 (DE = 3.1)

Minimum no of clusters with a cluster size of 100