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Table 1 Sample Size Determination

From: Determinants of implanon discontinuation among women who ever used implanon in Shashemene district, west Arsi zone, Southern Ethiopia: unmatched case control study

Main factors

CI

Power

Ratio

% CWE

OR

Cases

Controls

Total

References

Discussion a with partner

95%

80

1:2

23.4

2.87

54

107

161

[32]

Side effects

95%

80

1:2

56.5

2.66

66

132

198

[33]

Previous history of abortion

95%

80

1:2

28.6

2.3

88

176

264

[17]

  1. CI: Confidence Interval OR: Odds Ratio % CWE: Percent of control with exposure