Table 4.

Proposed sample size to conduct survey with sexual minorities (men who have sex with men, male sex workers, transgender) in Bangladesh (January 2019–June 2020)

Indicators used in the calculation of sample size	Suitable values assumed for the sexual minority people	One-way change detectable	Design effect	Required Sample Size*
Knowledge of TB:
1. Cause of TB: Percentage of beneficiaries correctly identify that TB is caused by bacteria	40%	20%	2.0	159
2. Route of transmission of TB: percentage of beneficiaries mentioned that TB is transmitted by air (by talking/by coughing/sneezing/ spitting TB germs)	50%	20%	2.0	152
3. Methods of prevention: percentage of beneficiaries mentioned that TB can be prevented by taking BCG vaccination/covering mouth and nose when patient with TB is coughing/sneezing/spitting/talking	50%	20%	2.0	152

*5% was added in order to adjust drop-out during survey.

TB, tuberculosis.