Table 6.

Performance of OSA patients and healthy controls on the Test for Attention Performance subtests.

	OSA Patients (n = 32)	95%CI	Healthy Controls (n = 34)	95%CI	F(1,64)	P
	Mean ± SD	95% Confidence Interval	Mean ± SD	95% Confidence Interval
(a) Vigilance test (0–30 min)
Median RT, ms	454.5 ± 114.8	411.4–497.6	460.1 ± 99.0	428.3–491.9	0.04	n.s.
SD of the RT, ms	111.0 ± 37.33	97.5–124.5	108.0 ± 35.34	96.3–120.9	0.7	n.s.
Valid responses	31.6 ± 5.30	29.7–33.5	33.8 ± 2.49	32.8–34.6	4.5 *	0.05
Omissions	3.62 ± 4.6	1.9–5.2	1.2 ± 2.2	0.4–2.0	7.3 *	0.01
False reactions	3.25 ± 4.66	1.5–4.9	2.03 ± 5.48	0.1–3.9	0.9	n.s.
(b) Go/No Go test
Median RT, ms	508.5 ± 78.5	479.5–537.4	509.7 ± 62.4	490.1–529.4	0.01	n.s.
SD of the RT, ms	86.8 ± 21.3	79.2–94.5	72.9 ± 17.5	66.8–79.0	8.5 *	0.01
Valid responses	21.3 ± 0.9	20.4–23.6	23.7 ± 0.49	23.4–23.8	3.9	0.05
Omissions	0.28 ± 0.6	0.1–0.4	0.03 ± 0.17	0.03–0.08	5.85 *	0.05
False reactions	0.94 ± 1.4	0.4–1.4	0.44 ± 0.7	0.2–0.7	3.5	0.06
(c) Divided test
Median RT, ms	645.9 ± 100.9	609.5–682.3	440.3 ± 70.6	615.6–664.9	0.1	n.s.
SD of the RT, ms	268.3 ± 64.8	244.8–291.6	214.5 ± 44.2	198.8–230.2	15.3 *	0.001
Valid responses	28.1 ± 3.43	26.8–29.2	29.5 ± 2.79	28.5–30.4	3.5	0.06
False reactions	3.1 ± 3.98	1.6–4.5	1.4 ± 1.35	0.9–1.8	5.6 *	0.05
Omissions	2.75 ± 2.05	2.0–3.4	1.8 ± 2.15	1.0–2.5	3.6	0.06
Delayed reactions	0.97 ± 0.52	0.7–1.1	0.75 ± 0.56	0.5–0.9	2.7	n.s.

Legend: n.s. = not significant; the value after ± indicate the standard deviation. * indicates F values exceeding the critical value according to post-hoc power analysis, given the probability of a Type I error set at 0.05 and a Type II error set at 0.80.