From: Characteristics and risk factors of children with sleep-disordered breathing in Wuxi, China
Characteristic | Sample (n = 3997) | SDB (n = 534) | NO SDB (n = 3463) | Group differences | P values |
---|---|---|---|---|---|
Father’s sleep patterns | 3997 | 534 (13.4)* | 3463 | χ2 = 50.994 | 0.000* |
 Irregular | 817 | 163 (20) | 654 |  |  |
 Regular | 2486 | 318 (12.8) | 2168 |  |  |
 Very regular | 694 | 53 (7.6) | 641 |  |  |
Mother’s sleep patterns | 3997 | 534 (13.4)* | 3463 | χ2 = 52.101 | 0.000* |
 Irregular | 385 | 90 (23.4) | 295 |  |  |
 Regular | 2833 | 381 (13.4) | 2452 |  |  |
 Very regular | 779 | 63 (8.1) | 716 |  |  |
Father’s bedtime | 3997 | 534 (13.4)* | 3463 | χ2 = 30.033 | 0.000* |
 21–22 | 1247 | 118 (9.5) | 1129 |  |  |
 22–24 | 2440 | 355 (14.5) | 2085 |  |  |
 After 24 | 310 | 61 (19.7) | 249 |  |  |
Mother’s bedtime | 3997 | 534 (13.4)* | 3604 | χ2 = 26.946 | 0.000* |
 21–22 | 2316 | 265 (11.4) | 2051 |  |  |
 22–24 | 1572 | 241 (15.3) | 1331 |  |  |
 After 24 | 109 | 28 (25.7) | 81 |  |  |
Father’s sleep duration | 3997 | 534 (13.4)* | 3463 | χ2 = 14.940 | 0.001* |
 >8 h | 686 | 68 (9.9) | 618 |  |  |
 6 h–8 h | 3093 | 423 (13.7) | 2670 |  |  |
 <6 h | 218 | 43 (19.7) | 175 |  |  |
Mother’s sleep duration | 3997 | 534 (13.4)* | 3463 | χ2 = 27.318 | 0.000* |
 >8 h | 1091 | 113 (10.4) | 978 |  |  |
 6 h–8 h | 2790 | 390 (14.0) | 2400 |  |  |
 <6 h | 116 | 31 (26.7) | 85 |  |  |
Familial sleep sickness | 637 (20.9) | 199 (23.8)* | 638 | χ2 = 99.219 | 0.000* |