Table 3 Summary statistics for time spent by children indoors, watching TV and sleeping, by sex

Group Mean (SD) Median (Range) P value1 P value2
Before the age of 3, how many hours a day did the child spent indoors? Autism (n = 53) 17.1 (5.9) 20.0 (6–22) <0.001
Male (n = 22) 17.3 (6.2) 22.0 (6–22)   0.013
Female (n = 31) 17.0 (5.7) 20.0 (6–22)   <0.001
Non-Autism (n = 41) 10.3 (4.2) 10.0 (3.5–22)
Male (n = 7) 10.7 (3.5) 10.0 (6–16)
Female (n = 34) 10.2 (4.3) 10.0 (3.5–22)
Before the age of 3, how many hours a day did the child watch television? Autism (n = 52) 4.7 (4.1) 4.0 (0–16) 0.015 0.420
Male (n = 21) 4.0 (3.9) 3.0 (0–15)
Female (n = 31) 5.2 (4.3) 4.0 (0–16)   0.020
Non-Autism (n = 42) 2.9 (2.6) 2.0 (0–13)
Male (n = 8) 2.8 (2.4) 2.0 (0–7)
Female (n = 34) 2.9 (2.7) 2.0 (0–13)
Before the age of 3, how many hours a day did the child sleep? Autism (n = 52) 8.4 (1.9) 8.0 (4–16) 0.001
Male (n = 22) 7.6 (1.5) 8.0 (4–10)   0.001
Female (n = 30) 8.9 (2.0) 8.5 (6–16)   0.19
Non-Autism (n = 42) 9.5 (1.3) 9.5 (7–12)
Male (n = 8) 9.9 (1.3) 10.0 (8–12)
Female (n = 34) 9.4 (1.3) 9.5 (7–12)
1. P value1 compares mean of entire Autism and Non-Autism groups
2. P value2 compares the Autism females to the Non-Autism females and the Autism males to the Non-Autism males