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Table 2 Median hours of use for subjects using CPAP in different sub groups defined by study characteristics

From: A prospective observational study to evaluate the effect of social and personality factors on continuous positive airway pressure (CPAP) compliance in obstructive sleep apnoea syndrome

  First follow-up (6–10 weeks)   6 month follow-up  
Median hours of use (IQR) per night P value Median hours of use (IQR) per night P value
Long term unemployed vs.
people in work (or retired)
4.2 (3.8–5.3) vs. 6.3 (4.3– 7.5) 0.028 2.61 (1.0 – 5.7) vs. 5.96 (4.0– 7.2) 0.016
Education : Bachelor degree
vs. less, formal education
6.04 (4.14–7.49) vs. 5.90 (4.53–7.42) 0.61 5.75 (3.4–7.13) vs. 6.02 (5.01–7.1) 0.35
Type D personality; vs. Non-Type D 6.00 (4.2–7.22) vs. 6.07 (4.22–7.49) 0.8 5.5 (2.9–7.1) vs. 6.06 (4.14–7.1) 0.48
Previous diagnosis of depression vs. None 6.87 (2.92–7.85) vs. 6.00 (4.22– 7.17) 0.19 5.61(3.00–6.90) vs. 5.74 (3.99–7.10) 0.7
BDI > 13 vs. ≤ 13 6.00 (4.14–7.65) vs. 6.15 (4.36–7.26) 0.62 5.01(2.62–7.37) vs. 5.99 (4.68–7.00) 0.57
BDI ≥ 29 vs. BDI <29 4.72 (4.30–7.49) vs. 6.20 (3.98–7.19) 0.31 4.27 (2.52–6.5) vs. 5.98 (4.01–7.13) 0.08
Anxiety vs. No anxiety (self report) 6.46(3.77–7.87) vs. 6.00 (4.22 –7.22) 0.25 5.01 (2.56–6.66) vs. 5.84(4.0–7.20) 0.09
Sex (male vs. female) 6.00 (4.2–7.2) vs. 6.36 (4.18–7.19) 0.43 5.59 (3.4–7.03) vs. 5.97 (4.75–7.6) 0.26
Age (greater than 70 vs. ≤70 years) 7.02 (6.6– 7.23) vs. 6.00 (4.1–7.46) 0.21 6.99 (5.94–7.00) vs. 5.61 (3.4–7.1) 0.23
ESS ≥ 10 vs. <10 6.02 (4.14–7.45) vs. 6.0 (4.63–7.73) 0.24 5.6 (3.4–7.1) vs. 6.1 (4.17–7.2) 0.20
4% desaturation index >20 vs. ≤20 per hour 6.0 (4.1–7.5) vs. 6.04 (4.16–7.38) 0.8 6.14 (3.62–7.27) vs. 5.39 (3.2–6.99) 0.38
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