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Table 4 sP-selectin and C-reactive protein serum levels among patients and controls

From: Impact of obstructive sleep apnea on platelet activation and development of silent brain infarctions

 

Mild (n = 5)

Moderate (n = 8)

Severe (n = 11)

Controls (n = 24)

Test of sig

p

sP-selectin (ng/ml)

 Normal (1–140)

5 (100%)

4 (50%)

2 (18.2%)

24 (100%)

χ2 = 29.419*

MCp < 0.001*

 > 140

0 (0%)

4 (50%)

9 (81.8%)

0 (0%)

 Mean ± SD

78.60 ± 51.18

133.25 ± 53.78

261.27 ± 106.77

62.50 ± 45.76

H = 25.631*

< 0.001*

 Median (min.–max.)

80 (25–138)

147.5 (48–201)

280 (96–450)

65.0 (1.0–135.0)

C-reactive protein

 < 6 negative

4 (80.0%)

4 (50.0%)

0 (0.0%)

24 (100.0%)

χ2 = 38.777*

MCp < 0.001*

 ≥ 6 positive

1 (20.0%)

4 (50.0%)

11 (100.0%)

0 (0.0%)

 Mean ± SD

4.80 ± 4.49

7.88 ± 4.45

15.27 ± 3.77

2.67 ± 1.88

H = 29.718*

 < 0.001*

 Median (min.–max.)

5.0 (1.0–12.0)

7.50 (2.0–16.0)

16.0 (7.0–19.0)

2.50 (0.0–5.0)

  1. SD: standard deviation; H: H for Kruskal–Wallis test; χ2: Chi-square test; MC: Monte Carlo
  2. *Statistically significant at p ≤ 0.05