Study of correlation between forced vital capacity and demand for healthcare services in severe asthmatics

Table 2 Correlation between spirometry values and demand for healthcare services of the studied population of 98 severe asthmatics patients

Variable	%FVC		%SVC		%FEV₁		%FEV₁/FVC		%SVC-FVC
Variable	r	p	r	p	r	p	r	p	r	p
ER/year	−0.25	0.01	−0.22	0.02	−0.23	0.01	−0.15	NS	−0.06	NS
ICU	−0.15	NS	−0.18	NS	−0.16	NS	−0.07	NS	−0.03	NS
HWR	0.15	NS	0.13	NS	0.04	NS	0.15	NS	0.03	NS
ER + ICU + HWR	−0.25	0.01	−0.21	0.03	−0.23	0.01	−0.12	NS	−0.08	NS

% - Predicted values: FVC, Forced Vital Capacity; SVC, Slow Vital Capacity; FEV₁ Forced Expiratory Volume at first second; NS,- not significant; ER/year, demand for emergency room /year; ICU, demand for Intensive Care Unit; HWR, referral to hospital wards; ER+ ICU+ HWR, referral to emergency room + Intensive care unit + Hospital wards. n = 98 (53 women and 45 men)

ISSN: 2049-6958