Table 2.

Sleep ventilatory parameters.

	FS (n = 37)	AS (n = 39)	NoNi (n = 86)	FS vs NoNi			AS vs Noni			FS vs AS
	n(%)-means (SD)			Chi2-MWU-Std	p1	p1a	Chi2-MWU-Std	p2	p2a	Chi2-MWU-Std	p5	p5a
Obstructive apnea (IAHo)	7.76 (12.2)	4.91 (13.2)	3.62 (7.52)	1352	0.184	0.289	1533	0.438	0.610	576	0.128	0.464
Central apnea (IAHc)	3.04 (7.42)	0.772 (2.11)	0.794 (2.40)	1558	0.848	0.433	1659	0.921	0.840	709	0.888	0.458
Mixed apnea (IAHm)	1.13 (3.56)	0.954 (3.75)	0.298 (1.10)	1455	0.332	0.284	1607	0.612	0.255	644	0.280	0.990
AHI total (index)	27.8 (23.5)	22.8 (28.1)	17.9 (16.0)	1269	0.076	0.498	1643	0.856	0.210	605	0.228	0.524
AHI ≥ 15 (index)	22 (59.5%)	21 (53.8%)	43 (50.0%)	0.929	0.335	0.281	0.159	0.690	0.631	0.244	0.622	0.070
mean SpO2 (%)	92.5 (2.24)	93.4 (2.53)	94.3 (2.06)	775	<0.001	0.016	1197	0.021	0.015	513	0.046	0.843
CT90 (%)	16.3 (23.3)	7.31 (17.6)	3.44 (9.81)	923	<0.001	0.009	1423	0.203	0.087	512	0.044	0.423
Desaturation (index)	23.5 (24.7)	18.7 (28.8)	12.0 (15.8)	1165	0.038	0.278	1481	0.342	0.079	605	0.306	0.162
Microarousal (index)	20.0 (11.7)	20.9 (17.5)	16.2 (9.10)	1275	0.081	0.675	1489	0.318	0.087	672	0.607	0.240
Microarousal respi. (Index)	12.6 (11.3)	11.5 (16.0)	9.21 (8.09)	1373	0.230	0.925	1674	0.989	0.409	634	0.363	0.500
Snoring	3.17 (1.56)	2.94 (1.41)	2.72 (1.34)	1226	0.170	0.230	1361	0.431	0.313	581	0.569	0.763
PLM≥15 (n)	7 (18.9%)	6 (16.2%)	12 (14.0%)	0.488	0.485	0.705	0.106	0.745	0.650	0.0933	0.760	0.198

AHI = Apnea hypopnea index; AS =Active smoker; CT90 = Desaturation under 90%; FS= Former smoker; MWU = Mann Withney U; NoNi=No nicotine use; NS= Nicotine substitutes; PLM = Periodic leg movement; SPO2 = Mean saturation; Stud = Student-test.

Statistically significant results in bold.

^aCorrection for the following factors: Age, gender; BMI.