. Author manuscript; available in PMC: 2010 Oct 27.

Published in final edited form as: J Am Coll Cardiol. 2009 Oct 27;54(18):1706–1712. doi: 10.1016/j.jacc.2009.08.016

Table 3.

Effect of Apneas on B-Type Natriuretic Peptide

Regression	Independent variable	Coefficient	95% Confidence Interval
Frequency Parameters
(1)	Total number of apneas and hypopneas	0.0020	[−0.0064, 0.0104]
(2)	Number of central apneas	−0.0014	[−0.0185, 0.0156]
(3)	Number of obstructive apneas	0.0037	[−0.0094, 0.0168]
(4)	Number of arousals	−0.0033	[−0.0138, 0.0072]
Desaturation Parameters
(5)	Percent with O₂ sat. below 90%	0.0096	[0.0015, 0.0177]^*
(6)	Average difference between peak and nadir of O₂ saturation	0.0169	[−0.0100, 0.0439]

Each row reports the result of a separate regression of the logarithm of BNP on the independent variable specified. Standard errors are clustered by patient-night, of which there are 28 distinct observations. Every regression also includes individual fixed effects and a linear time trend. The sample size is N=643 for each regression.

p = 0.02