Lung involvement in children with newly diagnosed rheumatic diseases: characteristics and associations

Table 3 Abnormal lung function test findings

	Number (percentage) of the results below LLN
Parameter	Study group (n = 47)	Control group (n = 51)	*P-value*
VC_max	5 (10.6%)	3 (5.9%)	0.624
FVC	3 (6.4%)	2 (3.9%)	0.925
FEV₁	2 (4.3%)	1 (2.0%)	0.943
FEF_25-75	10 (21.3%)	5 (7.8%)	0.107
DL_CO	18 (40.0%)	6 (16.7%)	0.041*

^*P < 0.05 was considered statistically significant
Abbreviations: LLN Lower limit of normal, VC_max Maximum vital capacity, FVC Forced vital capacity, FEV₁ Flow expiratory volume in 1 s; FEF_25-75, forced expiratory flow at 25% to 75% of the FVC, DL_CO Lung diffusion for carbon monoxide

ISSN: 1546-0096