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Table 1 Changes in intellectual disability among children aged 10 years depicted as prevalence ratios in relation to the baseline year 2011, stratified by sociodemographic factors

From: Changes in the prevalence of intellectual disability among 10-year-old children in Sweden during 2011 through 2021: a total population study

Calendar year

Main analysis

Sex

Parental education at birth

Parental migration status

  

Female

Male

< 10 years

10–12 years

≥ 13 years

Both native-born parents

Both foreign-born parents

Foreign-born mother and native-born father

Native-born mother and foreign-born father

2011

Ref.

Ref.

Ref.

Ref.

Ref.

Ref.

Ref.

Ref.

Ref.

Ref.

2012

1.17(1.04–1.31)

1.16 (0.97–1.39)

1.17 (1.01–1.35)

1.26 (0.86–1.83)

1.19 (1.02–1.38)

1.15 (0.95–1.39)

1.18 (1.03–1.35)

1.22 (0.94–1.58)

1.04 (0.64–1.67)

1.01 (0.66–1.57)

2013

1.10 (0.98–1.23)

1.06 (0.88–1.27)

1.12 (0.97–1.30)

1.34 (0.93–1.94)

1.11 (0.95–1.29)

1.10 (0.91–1.33)

1.06 (0.92–1.22)

1.40 (1.09–1.79)

0.80 (0.49–1.32)

0.90 (0.58–1.39)

2014

1.04 (0.93–1.16)

1.03 (0.86–1.24)

1.04 (0.90–1.21)

1.35 (0.93–1.95)

1.06 (0.90–1.23)

1.05 (0.87–1.26)

0.99 (0.86–1.14)

1.27 (0.99–1.63)

1.07 (0.68–1.70)

0.76 (0.48–1.20)

2015

1.10 (0.98–1.23)

0.96 (0.80–1.16)

1.19 (1.03–1.37)

1.27 (0.88–1.83)

1.14 (0.97–1.32)

1.12 (0.93–1.35)

1.04 (0.90–1.19)

1.28 (1.00-1.64)

0.95 (0.59–1.51)

1.13 (0.75–1.71)

2016

1.11 (1.00-1.24)

1.05 (0.88–1.26)

1.16 (1.00-1.33)

1.45 (1.01–2.07)

1.14 (0.98–1.33)

1.13 (0.94–1.36)

1.01 (0.88–1.16)

1.36 (1.07–1.73)

1.06 (0.68–1.66)

1.17 (0.78–1.77)

2017

1.18 (1.06–1.32)

1.23 (1.03–1.46)

1.15 (1.00-1.33)

1.38 (0.97–1.97)

1.25 (1.07–1.45)

1.20 (1.00-1.44)

1.12 (0.98–1.28)

1.38 (1.09–1.74)

0.91 (0.57–1.45)

1.05 (0.70–1.59)

2018

1.35 (1.22–1.51)

1.22 (1.03–1.46)

1.44 (1.25–1.64)

1.72 (1.22–2.41)

1.38 (1.19–1.60)

1.41 (1.18–1.68)

1.30 (1.14–1.48)

1.45 (1.15–1.83)

1.04 (0.66–1.63)

1.31 (0.88–1.95)

2019

1.29 (1.15–1.43)

1.12 (0.94–1.33)

1.40 (1.22–1.60)

1.56 (1.11–2.20)

1.44 (1.24–1.67)

1.23 (1.03–1.47)

1.18 (1.03–1.35)

1.43 (1.14–1.81)

1.27 (0.82–1.96)

1.19 (0.80–1.77)

2020

1.50 (1.36–1.67)

1.31 (1.10–1.55)

1.63 (1.43–1.86)

2.00 (1.44–2.77)

1.46 (1.26–1.69)

1.63 (1.38–1.93)

1.41 (1.24–1.60)

1.70 (1.36–2.12)

1.22 (0.79–1.87)

1.18 (0.79–1.76)

2021

1.56 (1.41–1.74)

1.42 (1.20–1.68)

1.67 (1.46–1.90)

1.79 (1.28–2.49)

1.61 (1.39–1.86)

1.68 (1.42–1.99)

1.48 (1.30–1.69)

1.64 (1.31–2.05)

1.34 (0.88–2.05)

1.34 (0.91–1.99)

2011-2021a

1.04 (1.04–1.05)

1.03 (1.02–1.04)

1.05 (1.04–1.06)

1.06 (1.03–1.08)

1.04 (1.03–1.05)

1.05 (1.04–1.06)

1.04 (1.03–1.05)

1.04 (1.02–1.05)

1.04 (1.00-1.07)

1.04 (1.01–1.06)

  1. a. Average annual relative increase from 2011 to 2021
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Journal of Neurodevelopmental Disorders

ISSN: 1866-1955

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