Table 3.
Unadjusted ORs (95% CIs) for variables associated with the secondary outcomes
| Variables | OR | 95% CI | P Value |
|---|---|---|---|
| Need for hospitalization in the entire study population (n = 242 out of 320) | |||
| High-risk OSA | 2.43 | 1.35–4.36 | 0.003 |
| Modified high-risk OSA | 2.58 | 1.22–5.49 | 0.013 |
| Louder and/or frequent snoring | 2.71 | 1.46–5.04 | 0.002 |
| Louder snoring | 2.63 | 1.20–5.81 | 0.016 |
| Frequent snoring | 1.64 | 0.89–3.04 | 0.114 |
| Breathing pauses | 2.87 | 0.65–12.7 | 0.165 |
| Morning and/or daytime sleepiness | 1.09 | 0.65–1.85 | 0.743 |
| Age, yr | 1.04 | 1.03–1.06 | <0.001 |
| Age ⩾65 yr | 3.87 | 1.60–9.36 | 0.003 |
| Male sex | 1.16 | 0.70–1.93 | 0.571 |
| BMI, kg/m2 | 1.03 | 0.98–1.08 | 0.291 |
| Obesity | 1.11 | 0.64–1.91 | 0.715 |
| Hypertension | 3.94 | 2.02–7.67 | <0.001 |
| Diabetes | 7.35 | 2.23–24.23 | 0.001 |
| Coronary artery disease | 0.35 | 0.10–1.18 | 0.091 |
| Asthma/COPD | 0.31 | 0.07–1.36 | 0.120 |
| Study sites: MUH vs. KHAH | 6.93 | 3.35–14.3 | <0.001 |
| Study sites: MUH vs. KUH | 50.1 | 6.78–370 | <0.001 |
| Need for supplemental oxygen in the entire study population (n = 104 out of 320) | |||
| High-risk OSA | 2.26 | 1.40–3.66 | 0.001 |
| Modified high-risk OSA | 2.62 | 1.52–4.52 | 0.001 |
| Louder and/or frequent snoring | 2.56 | 1.57–4.17 | <0.001 |
| Louder snoring | 2.56 | 1.46–4.48 | 0.001 |
| Frequent snoring | 1.79 | 1.07–2.97 | 0.026 |
| Breathing pauses | 1.55 | 0.61–3.99 | 0.360 |
| Morning and/or daytime sleepiness | 1.25 | 0.77–2.01 | 0.365 |
| Age, yr | 1.04 | 1.02–1.06 | <0.001 |
| Age ⩾65 yr | 1.78 | 1.02–3.12 | 0.043 |
| Male sex | 1.48 | 0.92–2.38 | 0.105 |
| BMI, kg/m2 | 1.09 | 1.04–1.14 | <0.001 |
| Obesity | 1.45 | 0.89–2.36 | 0.137 |
| Hypertension | 2.39 | 1.47–3.88 | <0.001 |
| Diabetes | 2.09 | 1.17–3.74 | 0.013 |
| Coronary artery disease | 1.39 | 0.62–3.07 | 0.424 |
| Asthma/COPD | 1.98 | 0.81–4.83 | 0.120 |
| Study sites: MUH vs. KHAH | 1.68 | 0.96–2.94 | 0.072 |
| Study sites: MUH vs. KUH | 4.08 | 2.21–7.54 | <0.001 |
| Need for ICU ward in the entire study population (n = 19 out of 320) | |||
| High-risk OSA | 5.08 | 1.78–14.5 | 0.002 |
| Modified high-risk OSA | 2.20 | 0.83–5.83 | 0.111 |
| Louder and/or frequent snoring | 4.56 | 1.68–12.4 | 0.003 |
| Louder snoring | 4.03 | 1.56–10.4 | 0.004 |
| Frequent snoring | 2.01 | 0.78–5.17 | 0.148 |
| Morning and/or daytime sleepiness | 1.45 | 0.57–3.69 | 0.429 |
| Age, yr | 1.05 | 1.02–1.08 | 0.004 |
| Age ⩾65 yr | 2.44 | 0.92–6.48 | 0.072 |
| Male sex | 2.50 | 0.88–7.12 | 0.086 |
| BMI, kg/m2 | 1.07 | 0.99–1.15 | 0.107 |
| Obesity | 2.31 | 0.91–5.85 | 0.080 |
| Hypertension | 5.71 | 2.00–16.3 | 0.001 |
| Diabetes | 2.21 | 0.80–6.08 | 0.125 |
| Coronary artery disease | 1.77 | 0.23–13.8 | 0.584 |
| Asthma/COPD | 1.28 | 0.16–10.1 | 0.814 |
| Study sites: MUH vs. KHAH | 1.83 | 0.64–5.20 | 0.260 |
| Study sites: MUH vs. KUH | 1.36 | 0.38–4.80 | 0.638 |
Definition of abbreviations: BMI = body mass index; CI = confidence interval; COPD = chronic obstructive pulmonary disease; ICU = intensive care unit; KHAH = Koc Healthcare American Hospital; KUH = Koc University Hospital; MUH = Marmara University Hospital; OR = odds ratio; OSA = obstructive sleep apnea.
Snoring parameters are from the Berlin Questionnaire. The bold typeface indicates significantly different (P < 0.05).