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. Author manuscript; available in PMC: 2023 Jun 1.
Published in final edited form as: J Intellect Disabil Res. 2022 Feb 21;66(6):503–516. doi: 10.1111/jir.12920

Table 1.

Sample characteristics and activity levels for adolescents with intellectual and developmental disabilities

Characteristics Sedentary a MVPA a
n (%) M ± SD p b ES b M ± SD p b ES b
Gender 0.17 0.29 0.82 0.05
Male 40 (43.5%) 516.9 ± 149.0 19.1 ± 20.1
Female 52 (56.5%) 477.4 ± 124.7 20.3 ± 27.1
Race 0.96 0.02 0.03 0.16
White 72 (78.3%) 495.0 ± 136.8 16.9 ± 19.8
Other 20 (21.7%) 493.3 ± 138.4 30.1 ± 34.5
Ethnicity 0.76 0.02 0.71 0.16
Hispanic / Latino 6 (6.5%) 508.8 ± 112.3 16.2 ± 11.9
Not Hispanic / Latino 86 (93.5%) 493.6 ± 138.4 20.1 ± 24.9
Diagnosis 0.19 0.04 0.92 0.00
ASD 22 (24.7%) 532.7 ± 134.3 18.4 ± 24.6
DS 49 (55.1%) 472.2 ± 122.1 20.2 ± 21.6
Other IDD 18 (20.2%) 502.8 ± 145.0 21.6 ± 32.3
Season 0.56 0.01 0.25 0.03
Winter 38 (41.3%) 508.4 ± 109.8 15.5 ± 13.8
Spring 32 (34.8%) 495.8 ± 167.3 20.4 ± 27.5
Summer 22 (23.9%) 469.0 ± 130.7 26.3 ± 31.7
COVID-19 Pandemic 0.46 0.01 0.32 0.15
Pre-Pandemic 42 (45.7%) 483.1 ± 122.6 22.6 ± 25.5
Pandemic 50 (54.3%) 504.3 ± 147.6 17.5 ± 23.1
a

Measured in minutes per valid day

b

Independent-samples t-test results (p, Cohen’s d) are reported for gender, race, ethnicity, and COVID-19 pandemic; Analysis of Variance (ANOVA) results (p, partial η2) are reported for diagnosis and season.