Table 1.
Characteristics of patients referred to a university hospital with suspicion of obstructive sleep apnea.
| Apnea-hypopnea index (AHI) categories | ||||||
|---|---|---|---|---|---|---|
| No OSA AHI < 5 % (n) | Mild OSA AHI 5–14.9 % (n) | Moderate OSA AHI 15–29.9 % (n) | Severe OSA AHI ≥ 30 % (n) | Chi-square (df)a | p-valueb | |
| Patients | 34.7 (1,469) | 32.5 (1,377) | 17.4 (736) | 15.3 (649) | ||
| Sex, males | 60.7 (891) | 69.1 (951) | 77.2 (568) | 84.0 (545) | 139.6 (3) | <0.0005 |
| AGEc | ||||||
| 17–30 years 31–40 years 41–50 years 51–60 years >60 years | 73.0 (330) 50.8 (337) 35.2 (396) 23.6 (257) 16.5 (149) | 19.0 (86) 29.4 (195) 34.8 (391) 36.1 (393) 34.6 (312) | 4.2 (19) 9.3 (62) 16.0 (180) 22.5 (245) 25.5 (230) | 3.8 (19) 10.5 (70) 14.0 (157) 17.7 (193) 23.5 (212) | 615.0 (12) | <0.0005 |
| Marital status, married/cohabiting | 75.4 (1,067) | 75.4 (1,014) | 75.5 (547) | 78.1 (489) | 2.1 (3) | 0.55 |
| Daily smoking | 25.2 (347) | 22.2 (286) | 18.7 (131) | 19.7 (118) | 14.4 (3) | 0.002 |
| ALCOHOLc | ||||||
| < 3 days per week ≥3 days per week | 35.6 (1,355) 23.4 (75) | 32.8 (1,249) 30.0 (96) | 16.8 (639) 26.3 (84) | 14.9 (568) 20.3 (65) | 34.0 (12) | <0.0005 |
| Sleepwalking | 4.1 (59) | 2.5 (34) | 2.6 (19) | 4.0 (25) | 7.3 (3) | 0.06 |
| Sleep-related violence | 3.3 (48) | 2.2 (30) | 1.7 (12) | 1.4 (9) | 10.0 (3) | 0.02 |
| Sexual acts during sleep | 3.8 (55) | 2.6 (35) | 3.5 (25) | 2.1 (13) | 6.5 (3) | 0.09 |
| Sleep-related eating | 1.9 (27) | 1.6 (21) | 1.0 (7) | 1.6 (10) | 2.6 (3) | 0.45 |
| Nightmares | 50.1 (718) | 42.5 (574) | 40.1 (289) | 36.9 (232) | 40.5 (3) | <0.0005 |
a
Degrees of freedom.
b
Pearson chi-square.
c
The distribution of AHI categories is presented for each group within age/alcohol. Significant findings are shown in bold.