Skip to main content

Table 2 Prevalence and cumulative incidence of autism spectrum disorders for each study year and for the total study years

From: Prevalence and cumulative incidence of autism spectrum disorders and the patterns of co-occurring neurodevelopmental disorders in a total population sample of 5-year-old children

  Year 2013201420152016Total
Ascertained casesmale1413181560
female877527
total2220252087
N of children with ASD born in the catchment areamale89141344
female576523
total1316201867
A total N of 5-year-old children in the catchment areamale6856396006252549
female6256226215992467
total13101261122112245016
N of 5-year-old whose caregivers returned the screening questionnairemale5064964895312022
female4494685155001932
total954964100410313954
N of the birth cohort in the catchment areamale7036486396032593
female6566106645892519
total13591258130311925112
Crude orevalence (%) (95% confidence interval: CI)male2.04 (0.98–3.10)2.03 (0.94–3.13)3.00 (1.64–4.36)2.82 (1.42–4.23)2.35 (1.76–2.94)
female1.28 (0.40–2.16)1.13 (0.30–1.95)1.13 (0.30–1.96)0.83 (0.11–1.56)1.09 (0.68–1.51)
total1.68 (0.98–2.38)1.59 (0.90–2.28)2.05 (1.25–2.84)1.63 (0.92–2.34)1.73 (1.37–2.10)
Adjusted prevalence (%) (95% CI)male4.06 (3.20–4.92)
female2.22 (1.57–2.88)
total3.22 (2.66–3.76)
Cumulative incidence up to 5 years of age (%) (95% CI)male1.14 (0.35–1.92)1.39 (0.49–2.29)2.19 (1.06–3.33)2.16 (1.00–3.32)1.70 (1.20–2.19)
female0.76 (0.10–1.43)1.15 (0.30–1.99)0.90 (0.18–1.62)0.85 (0.11–1.59)0.91 (0.54–1.28)
total0.96 (0.44–1.47)1.27 (0.65–1.89)1.53 (0.87–2.20)1.51 (0.82–2.20)1.31 (1.00–1.62)
  1. ASD autism spectrum disorder, Prevalence (%) N of ASD cases/the total N of target population in the catchment area × 100
  2. Five-year cumulative incidence (%) N of ASD cases who were born in the catchment area/N of the birth cohort in the catchment area × 100