Table 3 A comparison of selected descriptive epidemiology studies of autism
From: Prevalence of treated autism spectrum disorders in Aruba
Powell et al. 2000 [26] | Baird et al. 2000 [27] | Bertrand et al. 2001 [28] | Yeargin-Allsop et al. 2003 [31] | Chakrabarti and Fombonne 2005 [29] | van Balkom et al. Present study | |
|---|---|---|---|---|---|---|
Population | 16,012b | 16,235 | 8,896 | 289,456 | 10,903 | 13,109 |
Country | UK | UK | US | US | UK | Aruba |
Age | 1–4 years | 7 years | 3–10 years | 3–10 years | 4–6 years | 4–13 years |
Diagnosis a | RD | DA | DA | RRD | DA | RRD |
Prevalence AD | 1.6b | 3.1 | 4.0 | – | 2.2 | 1.9 |
Prevalence ASDs | 3.4b | 5.8 | 6.7 | 3.4 | 5.9 | 5.3 |
Proportion | 48% | 53% | 60% | – | 38% | 36% |
AD/all ASDs | (26/54) | (50/94) | (36/60) | (24/64) | (25/69) | |
Male:Female ASDs | 5.7:1 | 7.5:1 | 2.8:1 | 4:1 | 6.1:1 (est) | 6.7:1 |
% MR: AD | – | 40% | 58% | – | 67% | 64% |
% MR: ASDs | – | 22% | 49% | 64% | 30% | 42% |