Introduction
Patients and methods
Patient groups
Study endpoints
Statistics
Results
Patient characteristics | Group A (n = 99) | Group B (n = 182) | Group C (n = 412) |
---|---|---|---|
Age (years)a
| 44.5 (7.0) | 46.6 (5.3) | 46.0 (5.8) |
Sex: male/female (n, %) | 72/27 (72/28.0) | 129/53 (70.9/29.1) | 285/127 (69.2/30.8) |
Body mass index (kg/m2)a
| 42.6 (2.6) | 43.5 (2.1) | 43.2 (3.1) |
Comorbidities (n, %) | |||
Chronic obstructive pulmonary disease | 7 (7.9 | 14 (7.6) | 18 (4.4) |
Asthma | 9 (10.1) | 16 (8.9) | 21 (5.1) |
Diabetes mellitus type 2 | 14 (15.7) | 31 (17.0) | 65 (15.8) |
Coronary artery disease | 15 (16.9) | 25 (13.7) | 49 (11.9) |
Hypertension | 31 (34.8) | 58 (31.9) | 89 (21.6) |
Group A | Group B | Group C |
---|---|---|
Moderate risk: 49 (49.4 %) High risk: 41 (41.4 %) | Moderate risk: 112 (61.5 %) High risk: 70 (38.5 %) | Low risk: 412 (100 %) |
STOP-Bang factors | Group A | Group B | Group C |
---|---|---|---|
Snoring? Do you snore loudly (loud enough to be heard through closed doors or your partner has to wear ear plugs or elbow you at night)? | 91 (91.9 %) | 163 (89.0 %) | 46 (11.2 %) |
Tired? Do you often feel tired, fatigued, or sleepy during the daytime? | 95 (95.9 %) | 145 (80.0 %) | 28 (6.8 %) |
Observed ? Has anyone observed you stop breathing during your sleep? | 71 (71.7 %) | 131 (72.0 %) | 34 (8.3 %) |
Pressure ? Do you have or are being treated for high blood pressure? | 86 (86.9 %) | 171 (94.0 %) | 22 (5.3 %) |
Body mass index of >35 kg/m2? | 97 (98.0 %) | 182 (100 %) | 412 (100 %) |
Age older than 50 years? | 21 (10.1 %) | 44 (24.2 %) | 69 (16.7 %) |
Neck size large? For male, is your shirt collar 17 inches or larger? For female, is your shirt collar 16 inches or larger? | 94 (94.9 %) | 103 (97.8 %) | 39 (9.5 %) |
Gender = male? | 72 (72.7 %) | 129 (70.9 %) | 285 (69.2 %) |
AHI index | No. of patients who complied | No. of patients who did not comply | Total |
---|---|---|---|
AHI >30 | 49 | 2 | 51 |
AHI >15 | 29 | 3 | 32 |
AHI 5–15 | 4 | 12 | 16 |
Total | 81 | 17 | 99 |
SpO2 level/RR | Group A (n = 99) | Group B (n = 182) | Group C (n = 412) | Differences group A–B (p values) | Differences group B–C (p values) |
---|---|---|---|---|---|
SpO2 (%) day 0 | 92.1 (1.4) | 90.8 (1.6) | 94.8 (1.2) | <0.0001* | <0.0001* |
SpO2 (%) day 1 | 94.3 (1.2) | 90.6 (1.3) | 96.6 (1.3) | <0.0001* | <0.0001* |
SpO2 (%) day 2 | 96.6 (1.1) | 94.8 (1.4) | 98.4 (1.5) | <0.0001* | <0.0001* |
RR (breaths/min) on day 0 | 15.8 (1.9) | 12.4 (2.4) | 16.1 (0.9) | <0.0001* | <0.0001* |
RR (breaths/min) day 1 | 16.6 (1.4) | 13.6 (2.9) | 18.0 (0.7) | <0.0001* | <0.0001* |
Characteristics | Group A (n = 99) | Group B (n = 182) | Group C (n = 412) | Differences Group A–B (p values) | Differences Group B–C (p values) |
---|---|---|---|---|---|
Hypertension (n) | 11 7 AHI > 30 4 AHI > 15 | 21 8 moderate risk 12 high risk | 12 | 0.9142 | <0.0001* |
Deaths (n) | 0 | 2 | 0 | 0.5142 | 0.3807 |
Length of stay (mean, SD) | 3.2 (0.7) | 4.1 (0.5) | 2.5 (0.6) | 0.0001* | <0.0001* |
Pneumonia (n) | 2 2 AHI > 30 | 17 6 moderate risk 11 high risk | 4 | 0.040* | <0.0001* |
Reintubations (n) | 0 | 7 7 high risk | 0 | 0.1442 | 0.0098* |
ICU admissions (n) | 0 | 2 2 high risk | 0 | 0.5142 | 0.0873* |