Chronic Obstructive Pulmonary Disease in Cameroon: Prevalence and Predictors—A Multisetting Community-Based Study

Table 2

Spirometry data of the population enrolled in COPD community study, Cameroon, 2014-2018. Categorical data are expressed as counts (%) and continuous data as median (1^st, 3^rd quartile).

Variables	Sample size	Values
Prebronchodilator FEV1 (liter)	5 021	2.5 (1.9, 3.1)
Prebronchodilator FVC (liter)	5 021	3.0 (2.3, 3.6)
Postbronchodilators (COPD)	5 021	145 (2.9)
COPD severity	145
Mild		23 (15.9)
Moderate		84 (57.9)
Severe		31 (21.4)
Very severe		7 (4.9)
COPD etiologies	145
Biomass exposure		126 (86.9)
Smoking		39 (26.9)
History of asthma		16 (11.0)
History of tuberculosis		15 (10.3)

COPD = chronic obstructive pulmonary disease, FEV1 = forced expiratory volume after 1 second, FVC = forced vital capacity, and LLN = lower limit of normal.