| Derivation (n = 352), n (%) | Validation (n = 260), n (%) | P value | |
|---|---|---|---|
| Primary care data complete | 350 (99.4) | 249 (95.8) | 0.002 |
| Lack of sleep | 74 (21.0) | 27 (10.4) | 0.001 |
| Male | 122 (34.7) | 67 (25.8) | 0.019 |
| Mean age, SD | 48.84 (11.15) | 49.01 (11.55) | 0.852 |
| Mean weight, SD | 81.11 (16.20) | 86.66 (17.34) | <0.001 |
| Mean height, SD | 169.45 (9.70) | 169.03 (8.96) | 0.588 |
| Mean BMI, SD | 28.18 (4.88) | 30.26 (5.24) | <0.001 |
| Frequent snoring | 346 (98.3) | 257 (98.8) | 0.740 |
| Breathing pauses | 134 (38.1) | 182 (70.0) | <0.001 |
| Daytime hypersomnia | 149 (42.3) | 163 (62.7) | <0.001 |
| History of accidents | 12 (3.4) | 22 (8.5) | 0.007 |
| Morning tiredness | 151 (42.9) | 157 (60.4) | <0.001 |
| Waking with sensation of asphyxia | 68 (19.3) | 96 (36.9) | <0.001 |
| Mean neck circumference, SD | 39.08 (4.27) | 40.09 (4.09) | 0.003 |
| AHT | 79 (22.4) | 89 (34.2) | 0.001 |
| Heart failure | 3 (0.9) | 7 (2.7) | 0.106 |
| DM | 20 (5.7) | 33 (12.7) | 0.002 |
| Smoking habit | |||
| Non-smoker | 131 (37.2%) | 74 (28.5%) | 0.027 |
| Smoker | 106 (30.1%) | 76 (29.2%) | |
| Ex-smoker | 115 (32.7%) | 110 (42.3%) | |
| Drinks alcohol | 126 (35.8%) | 111 (42.7%) | 0.083 |
| Mean Epworth score, SD | 9.24 (4.14) | 10.04 (4.90) | 0.034 |
| Diagnostic test | |||
| CPSG | 11 (3.8) | 159 (68.8) | <0.001 |
| RP | 272 (92.8) | 67 (29.0) | |
| None | 6 (2.0) | 5 (2.2) | |
| Both RP and CPSG | 4 (1.4) | 0 (0.0) | |
| Therapeutic decision | |||
| CPAP | 79 (28.5) | 118 (50.6) | <0.001 |
| No CPAP | 192 (69.3) | 111 (47.6) | |
| Mandibular advancement device | 4 (1.4) | 4 (1.7) | |
| Postural device | 2 (0.7) | 0 (0.0) | |
AHT = arterial hypertension. BMI = body mass index. CPAP = continuous positive airway pressure. CPSG = conventional polysomnography. DM = diabetes mellitus. RP = respiratory polygraphy. SD = standard deviation.