Skip to main content

Table 3 Estimates for treatment effect: precision estimates presented as 80% confidence intervals

From: Pilot study to evaluate a tailored text message intervention for pregnant smokers (MiQuit): study protocol for a randomised controlled trial

80% CI Odds ratio

10% control event rate N = 200 in each group

15% control event rate N = 200 in each group

20% control event rate N = 200 in each group

1.3

0.87 to 1.95

0.92 to 1.83

0.95 to 1.77

1.5

1.01 to 2.23

1.07 to 2.10

1.11 to 2.03

1.8

1.22 to 2.65

1.29 to 2.51

1.33 to 2.43