| Characteristic | No. of patients (%) n = 272 |
|---|---|
| Sex | |
| Male | 234 (86.0) |
| Female | 38 (14.0) |
| Age at diagnosis, yr | |
| 0 < 1 | 0 (0.0) |
| 1 < 2 | 10 (3.7) |
| 2 < 3 | 77 (28.3) |
| 3 < 4 | 57 (21.0) |
| 4 < 5 | 33 (12.1) |
| 5 < 7 | 43 (15.8) |
| 7 < 11 | 44 (16.2) |
| 11 < 15 | 8 (2.9) |
| Specific diagnosis | |
| ASD | 74 (27.2) |
| AD | 130 (47.8) |
| Asperger syndrome | 56 (20.6) |
| PDD-NOS | 12 (4.4) |
| Autism diagnostic observational schedule | |
| Yes | 269 (98.9) |
| No | 3 (1.1) |
| Autism diagnostic observational schedule module (n = 269) | |
| I | 112 (41.6) |
| II | 75 (27.9) |
| III | 82 (30.5) |
| IV | 0 (0.0) |
| Genetics referral | |
| Yes | 193 (71.0) |
| No | 1 (0.4) |
| Unknown | 78 (28.6) |
| Neuroimaging | |
| Yes | 79 (29.0) |
| No | 185 (68.0) |
| Unknown | 8 (3.0) |
| Provincial autism program referral | |
| Yes | 195 (71.7) |
| No | 75 (27.6) |
| Unknown | 2 (0.7) |
| Seizures | 14 (5.1) |
| Birthmarks | 14 (5.1) |
| Congenital anomalies | 16 (5.9) |
| Developmental regression | 23 (8.5) |
| Behavioural issues | 28 (10.3) |
| Dietary restrictions or issues | 17 (6.3) |
| Sleep disturbance | 13 (4.8) |
| GI symptomatology | 12 (4.4) |
| Anxiety | 25 (9.2) |
| OCD | 9 (3.3) |
| Depression | 0 (0.00) |
| ADHD | 27 (9.9) |
| Other | 19 (7.0) |
Note: AD = autistic disorder, ADHD = attention-deficit/hyperactivity disorder, ASD = autism spectrum disorder, GI = gastrointestinal, OCD = obsessive compulsive, PDD-NOS = persuasive developmental disorder-not otherwise specified.