Review | No. of studies | Publication dates of studies | Median prevalence/1000 | Range/1000 | |
Autistic disorder | |||||
French et al., 20134 | Autistic disorder | 26 | 2000–2011 | 2.2 | 0.8–9.4 |
Asperger syndrome* | 13 | 1998–2011 | 2.1 | 0.5–2.8 | |
Elsabbagh et al., 20125 | Northern European | 16 | 2000–2008 | 1.9 | 0.7–3.9 |
Western Pacific | 12 | 2000–2011 | 1.2 | 0.3–9.4 | |
South East Asia/East Mediterranean | 1 | - | - | - | |
Americas | 7 | 2001–2010 | 2.2 | 1.1–4.0 | |
Overall | 1.7 | 0.3–9.4 | |||
Tsai, 20146 | 43 | 2001–2013 | 2.8 | 0.3–19.0 | |
Pervasive developmental disorder | |||||
French et al., 20134 | 34 | 2000–2011 | 6.2 | 0.6–26.4 | |
Elsabbagh et al., 20125 | Northern Europe | 14 | 2000–2011 | 6.2 | 3.0–11.6 |
Western Pacific | 4 | 2004–2011 | - | 1.6–19.0 | |
South East Asia/East Mediterranean | 4 | 2007–2012 | - | 0.1–10.7 | |
Americas | 13 | 2001–2010 | 6.5 | 1.3–11.0 | |
Overall | 6.2 | 0.1–19.0 | |||
Tsai, 20146 | 61 | 2000–2014 | 7.0 | 0.2–26.4 | |
Adak and Halder, 20177 | 25 | 2005–2015 | 9.2 | 0.7–26.4 |
↵*The authors comment on dubious quality of results.