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Table 1 Calculating sample size by considering associated factors for the estimation of minimum required sample size for the study

From: Suicide ideation and/or attempt with substance use and associated factors among the youth in northwest Ethiopia, community-based

 

Variable

Exposed

Unexposed

OR

Sample size

1.

Age

> 19 years (8.5%

15–19 years: 26%

1.82

573

2.

Friends use (yes)

Yes: 29%

No: 5.3%

7.42

191

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BMC Psychiatry

ISSN: 1471-244X

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