Potential risk factors and numbers of admissions, and admission rates cumulatively 1, 2 and 3 years following the survey
| Overall | 1 year following the survey | 2 years following the survey | 3 years following the survey | |||||||
| n (%) | Participants admitted n (%) | Admissions n | Admission rate (per 100) | Participants admitted n (%) | Admissions n | Admission rate (per 100) | Participants admitted n (%) | Admissions n | Admission rate (per 100) | |
| Overall | 482 (100) | 34 (100) | 82 | 17.0 | 46 (100) | 130 | 27.0 | 55 (100) | 186 | 38.6 |
| Sex: n=482 | ||||||||||
| Male | 289 (60.0) | 24 (70.6) | 60 | 20.8 | 30 (65.2) | 88 | 30.4 | 34 (61.8) | 123 | 42.6 |
| Female | 193 (40.0) | 10 (29.4) | 22 | 11.4 | 16 (34.8) | 42 | 21.8 | 21 (38.2) | 63 | 32.6 |
| Oropharyngeal dysphagia: n=472 | ||||||||||
| No | 339 (71.8) | 5 (14.7) | 6 | 1.7 | 7 (15.2) | 12 | 3.5 | 10 (18.2) | 19 | 5.6 |
| Yes | 133 (28.2) | 29 (85.3) | 76 | 57.1 | 38 (82.6) | 117 | 88.0 | 44 (80.0) | 166 | 124.8 |
| GMFCS: n=482 | ||||||||||
| I | 171 (35.5) | 3 (8.8) | 4 | 2.3 | 5 (10.9) | 7 | 4.1 | 7 (12.7) | 9 | 5.3 |
| II | 149 (30.9) | 5 (14.7) | 12 | 8.1 | 6 (13.0) | 21 | 14.1 | 6 (10.9) | 30 | 20.1 |
| III | 32 (6.6) | 2 (5.9) | 2 | 6.3 | 2 (4.3) | 4 | 12.5 | 2 (3.6) | 4 | 12.5 |
| IV | 63 (13.1) | 4 (11.8) | 5 | 7.9 | 8 (17.4) | 9 | 14.3 | 10 (18.2) | 17 | 27.0 |
| V | 67 (13.9) | 20 (58.8) | 59 | 88.1 | 25 (54.3) | 89 | 132.8 | 30 (54.5) | 126 | 188.1 |
| Number of frequent respiratory symptoms: n=482 | ||||||||||
| 0 | 336 (67.7) | 11 (32.4) | 16 | 4.8 | 16 (34.8) | 32 | 9.5 | 19 (34.5) | 52 | 15.5 |
| 1 | 66 (13.7) | 6 (17.6) | 11 | 16.7 | 9 (19.6) | 17 | 25.8 | 11 (20.0) | 22 | 33.3 |
| 2 | 43 (8.9) | 9 (26.5) | 30 | 69.8 | 11 (23.9) | 47 | 109.3 | 13 (23.6) | 65 | 151.2 |
| 3 | 37 (7.7) | 8 (23.5) | 25 | 67.6 | 10 (21.7) | 34 | 91.9 | 12 (21.8) | 47 | 127.0 |
| Snoring: n=465 | ||||||||||
| Never/rarely | 264 (56.8) | 13 (38.2) | 32 | 12.1 | 16 (34.8) | 43 | 16.3 | 19 (34.5) | 55 | 20.8 |
| Sometimes (weekly) | 99 (21.3) | 6 (17.6) | 21 | 21.2 | 9 (19.6) | 32 | 32.3 | 11 (20.0) | 38 | 38.4 |
| Often/always | 102 (21.9) | 12 (35.3) | 25 | 24.5 | 18 (39.1) | 49 | 48.0 | 22 (40.0) | 85 | 83.3 |
| Respiratory symptoms with meals: n=480 | ||||||||||
| No | 279 (58.1) | 9 (26.5) | 17 | 6.1 | 14 (30.4) | 31 | 11.1 | 18 (32.7) | 53 | 19.0 |
| Yes | 201 (41.9) | 25 (73.5) | 65 | 32.3 | 32 (69.6) | 99 | 49.3 | 37 (67.3) | 133 | 66.2 |
| Seizures: n=474 | ||||||||||
| No | 331 (69.8) | 7 (20.6) | 8 | 2.4 | 12 (26.1) | 18 | 5.4 | 16 (29.1) | 25 | 7.6 |
| Yes | 143 (30.2) | 26 (76.5) | 72 | 50.3 | 33 (71.7) | 110 | 76.9 | 38 (69.1) | 159 | 111.2 |
| Scoliosis—diagnosed: n=465 | ||||||||||
| No | 378 (81.3) | 19 (55.9) | 54 | 14.3 | 26 (56.5) | 84 | 22.2 | 33 (60.0) | 121 | 32.0 |
| Yes | 87 (18.7) | 13 (38.2) | 25 | 28.7 | 18 (39.1) | 41 | 47.1 | 19 (34.5) | 56 | 64.4 |
| Asthma—current: n=482 | ||||||||||
| No | 394 (81.7) | 25 (73.5) | 57 | 14.5 | 34 (73.9) | 95 | 24.1 | 41 (74.5) | 138 | 35.0 |
| Yes | 88 (18.3) | 9 (26.5) | 25 | 28.4 | 12 (26.1) | 35 | 39.8 | 14 (25.5) | 48 | 54.5 |
| Smoker: n=482 | ||||||||||
| No | 278 (57.7) | 19 (55.9) | 43 | 15.5 | 27 (58.7) | 68 | 24.5 | 33 (60.0) | 103 | 37.1 |
| Yes | 143 (29.7) | 11 (32.4) | 35 | 24.5 | 12 (26.1) | 54 | 37.8 | 15 (27.3) | 74 | 51.7 |
| Unsure/missing | 61 (12.7) | 4 (11.8) | 4 | 6.6 | 7 (15.2) | 8 | 13.1 | 7 (12.7) | 9 | 14.8 |
| Previous hospitalisation—linked data: n=482 | ||||||||||
| No | 439 (91.1) | 16 (47.1) | 23 | 5.2 | 22 (47.8) | 32 | 7.3 | 30 (54.5) | 58 | 13.2 |
| Yes | 43 (8.9) | 18 (52.9) | 59 | 137.2 | 24 (52.2) | 98 | 227.9 | 25 (46.5) | 128 | 297.7 |
| AB two or more in the past year: n=479 | ||||||||||
| No | 382 (79.8) | 20 (58.8) | 41 | 10.7 | 25 (54.3) | 57 | 14.9 | 30 (54.5) | 81 | 21.2 |
| Yes | 97 (20.3) | 14 (41.2) | 41 | 42.3 | 21 (45.7) | 73 | 75.3 | 25 (46.5) | 105 | 108.2 |
AB, antibiotics; GMFCS, Gross Motor Function Classification Scale.