Assessment of pulmonary function among cleaners in governmental hospitals in Addis Ababa, Ethiopia; comparative cross-sectional study

Table 2 An independent sample t-test result for comparison of pulmonary function parameters between cleaners and control group at governmental hospitals in Addis Ababa, Ethiopia

Variables	Exposed group (n = 70) mean ± SD	Control group (n = 70) mean ± SD	95% CI	P-value
FVC (L)
Actual V.	3.11 ± 0.75	3.58 ± 0.72	0.22–0.71	0.000**
%Predicted V.	92.8 ± 21.9	101.9 ± 16.4	2.65–15.6	0.006*
FEV₁ (L/s)
Actual V.	2.52 ± 0.69	3.05 ± 0.57	0.31–0.74	0.000**
%Predicted V.	87.1 ± 21.8	99.7 ± 18.7	5.75–19.3	0.000**
FEV₁/FVC (L/s)
Actual V.	81.4 ± 13.16	85.9 ± 11.3	0.43–8.62	0.030*
%Predicted V.	96.5 ± 15.9	103.7 ± 13.6	2.3–12.2	0.004*
PEFR (L/s)
Actual V.	3.82 ± 1.43	4.72 ± 1.55	0.41–1.41	0.000**
%Predicted V.	60.5 ± 21.5	72 ± 22.5	4.20–8.90	0.002*
FEF_25–75% (L/s)
Actual V.	2.66 ± 1.18	3.64 ± 1.14	0.59–1.36	0.000**
%Predicted V.	80.7 ± 34.5	105.3 ± 36.5	12.8–36.5	0.000**

ISSN: 1756-0500