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. Author manuscript; available in PMC: 2011 Jun 1.
Published in final edited form as: Sleep Med. 2010 May 13;11(6):540–544. doi: 10.1016/j.sleep.2010.01.008

Table 1.

Baseline characteristics, expressed as median (interquartile range) or number (column percent).

OSA (n=18) No OSA (n=9) p-value

Age 70 (61, 80) 65 (59, 66) 0.26

Female gender 8 (44) 2 (22) 0.41

Race/ethnicity
 African-American 4 (22) 2 (22) 1.00
 Asian 1 (6) 0 (0)
 Non-Hispanic white 13 (72) 7 (78)

BMI 31 (28, 34) 28 (24, 37) 0.84

Neck circumference (inches) 16 (15, 18) 17 (17, 18) 0.29

Hypertension 14 (78) 6 (66) 0.65

Diabetes 6 (33) 2 (22) 0.68

Atrial fibrillation 3 (17) 1 (11) 1.00

History of stroke 6 (33) 1 (11) 0.36

Coronary heart disease 3 (17) 0 (0) 0.53

Current smoking 2 (11) 1 (11) 1.00

Non-lacunar stroke subtype 13 (72) 5 (56) 0.42

Baseline NIHSS 6 (4,8) 6 (4,7) 0.72

Epworth Sleepiness Scale 11 (6, 14) 6 (5, 10) 0.16

SDQ-SA 32 (29, 40) 30 (27, 35) 0.14

Dysphagia 10 (56) 3 (33) 0.44

BMI: body mass index

NIHSS: NIH stroke scale

OSA: Obstructive sleep apnea

SDQ-SA: – Sleep apnea scale of the Sleep Disorders Questionnaire