Table 2.

Cognitive Characteristics of NYU Cohort at Baseline and Follow-up Evaluations

	All (n = 108)	Normal (n = 50)	Mild OSA (n = 43)	Moderate–Severe OSA (n = 15)
MMSE baseline	29.31 ± 0.99	29.40 ± 0.93	29.18 ± 0.98	29.33 ± 1.30
MMSE follow-up	29.36 ± 0.85	29.51 ± 0.718	29.29 ± 0.867	29.00 ± 1.206
CDR baseline	0 ± 0	0 ± 0	0 ± 0	0 ± 0
CDR follow-up	0.010 ± 0.071	0 ± 0	0 ± 0	0.083 ± 0.19
Animal fluency (z-scores)	0.207 ± 0.99	0.24 ± 1.14	0.05 ± 0.81	0.50 ± 0.95
Animal fluency (Δ z-scores)	−0.23 ± 0.87	−0.30 ± 0.98	−0.20 ± 0.85	−0.11 ± 0.54
Vegetable fluency (z-scores)	−0.042 ± 1.1	−0.023 ± 0.98	−0.14 ± 1.28	0.15 ± 0.96
Vegetable fluency (Δ z-scores)	−0.14 ± 0.99	−0.39 ± 0.87	0.087 ± 1.08	−0.02 ± 0.98
Boston Naming Test (z-scores)	−0.20 ± 1.03	−0.10 ± 1.06	−0.38 ± 0.98	−0.017 ± 1.07
Boston Naming Test (Δ z-scores)	0.11 ± 0.71	0.24 ± 0.69	0.12 ± 0.71	−0.28 ± 0.69
Logic 1 (z-scores)	0.19 ± 0.96	0.11 ± 1.0	0.24 ± 0.90	0.29 ± 1.05
Logic 1 (Δ z-scores)	−0.007 ± 0.86	−0.03 ± 0.87	−0.07 ± 0.82	0.23 ± 0.96
Logic 2 (z-scores)	0.10 ± 1.0	0.11 ± 1.07	0.008 ± 0.97	0.33 ± 0.88
Logic 2 (Δ z-scores)	−0.012 ± 0.75	0.042 ± 0.8	−0.06 ± 0.75	−0.04 ± 0.67
Trails Making Test-A time (z-scores)	0.062 ± 1.06	−0.14 ± 0.88	−0.33 ± 1.04	0.12 ± 0.89
Trails Making Test-A time (Δ z-scores)	0.048 ± 0.88	0.025 ± 0.14	0.127 ± 0.7	−0.093 ± 1.03
Trails Making Test-B time (z-scores)	−0.17 ± 0.96	−0.14 ± 0.89	−0.33 ± 1.04	0.12 ± 0.9
Trails Making Test-B time (Δ z-scores)	−0.034 ± 0.72	−0.007 ± 0.65	−0.002 ± 0.63	−0.19 ± 0.64
DSST (z-scores)	0.2 ± 0.95	0.2 ± 0.83	0.14 ± 1.03	0.36 ± 1.11
DSST (Δ z-scores)	0.07 ± 0.44	0.1 ± 0.44	−0.003 ± 0.45	0.18 ± 0.37

Definition of abbreviations: CDR = Clinical Dementia Rating; DSST = Digit Symbol Substitution Test; MMSE = Mini-Mental State Exam; NYU = New York University; OSA = obstructive sleep apnea.

Data are shown as mean ± SD.

Lower z-scores represent worse cognitive function.