Evidence of seasonal changes in airborne particulate matter concentration and occupation-specific variations in pulmonary function and haematological parameters among some workers in Enugu Southeast Nigeria: a randomized cross-sectional observational study

Table 5 Post-hoc Test for Forced Expiratory Volume in 1 s

Group	Mean Difference	Standard Error	P-value	95% CI
Cleaners Vs Cement workers	1.28*	0.28	0.001**	-1.85 to -0.34
Cleaners Vs spray Painters	0.42	0.28	1.00	-0.56 to 0.95
Cleaners Vs Woodworkers	0.77	0.29	1.00	-0.60 to 0.98
Cement workers Vs Spray Painters	-0.86*	0.28	0.01*	-1.65 to – 0.15
Cement workers Vs Woodworkers	-0.51*	0.30	0.02*	-1.71 to -0.09
Spray Painters Vs Woodworkers	0.35	0.30	1.00	-0.80 to 0.80

Keys: Vs Versus, CI confidence interval, spray painters automobile spray painters
^*The mean difference is significant at the 0.05 level

ISSN: 2049-3258