Certainty assessment

Number of studies

Effect

Certainty

Outcome

Relative

Absolute

[95% CI]

[95% CI]

Overall Prevalence

5

0.5 1.00

-- per 100

⨁⨁⨁◯

[0.48 - 0.52]

[from -- to --]

Moderate

-- per 100

[from -- to --]

Smokers

2

OR 1.76

0 fewer per 100

⨁⨁◯◯

[1.26 to 2.46]

[from 0 fewer per 0 less]

Low

Male

2

2.08

2 fewer per 1.000

⨁⨁⨁◯

[1.31 - 3.31]

[de 4 fewer to 1 less]

Moderate