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Table 3 Sample size calculation

From: The Stepping Stones and Creating Futures intervention to prevent intimate partner violence and HIV-risk behaviours in Durban, South Africa: study protocol for a cluster randomized control trial, and baseline characteristics

IPV incidence (12 months)

 

# of clusters required by arm

Baseline incidence

Intervention incidence at 24 months

Power

 

36

29

80

16

45

36

80

15

41

33

80

16

24

19

80

14

18

14

80

13

30

24

80

15