Predictive factors for moderate or severe exacerbations in asthma patients receiving outpatient care

BMC Pulmonary Medicine

Table 3 Evolution of instability parameters over follow-up

N = 330	Baseline (prior) X (SD)	4 months X (SD)	8 months X (SD)	12 months X (SD)
Numbers of Moderate exacerbations	0.64(0.96)^a	0.39(0.88) ^a	0.39(0.70) ^a	0.33(0.68) ^a
Numbers of Serious exacerbations	0.07(0.29) ^b	0.04(0.22)	0.03(0.21)^b	0.03(0.18)^b
Numbers of unscheduled consultations	0.58(1.07) ^a	0.25(0.74) ^a	0.34(1.08) ^a	0.23(0.58) ^a
Numbers of uncontrolled days	66.8(45.77) ^a	46.9(44.05) ^a	44.5(43.5) ^a	41.2(42.9) ^a

^a p <0.001 (paired t test) Baseline and 4–8- and 12 months follow-ups
^b p <0.1 (paired t test) Differences at baseline and 8- and 12-months follow-up
(Significant improvement in all parameters were observed between baseline visit and subsequent follow-ups)

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