TABLE 1

Demographic Information for Each Sleep Group and Entire Participant Group

CharacteristicGood Sleepers (CSHQ <41) (n = 340)Mild Sleep Problems (CSHQ 41–55) (n = 638)Moderate-Severe Sleep Problems (CSHQ >55) (n = 215)Totalχ2 (P Value)
Age (N = 1193)
 4–5 y157 (46.2)288 (45.1)113 (52.6)558 (46.8)3.62 (0.16)
 6–10 y183 (53.8)350 (54.9)102 (47.4)635 (53.2)
Gender (N = 1193)
 Male291 (85.6)541 (84.8)182 (84.7)1014 (85.0)0.13 (0.93)
 Female49 (14.4)97 (15.2)33 (15.3)179 (15.0)
Race (N = 1193)
 White279 (82.1)500 (78.4)165 (76.7)944 (79.1)2.73 (0.25)
 Nonwhite61 (17.9)138 (21.6)50 (23.3)249 (20.9)
ASD diagnosis (N = 1193)
 Autism208 (61.2)402 (63.0)132 (61.4)742 (62.2)4.20 (0.38)
 Asperger’s33 (9.7)72 (11.3)31 (14.4)136 (11.4)
 PDD/NOS99 (29.1)164 (25.7)52 (24.2)315 (26.4)
IQ group (N = 1193)
 >10078 (22.9)141 (22.1)50 (23.3)269 (22.5)6.08 (0.64)
 85–10087 (25.6)168 (26.3)46 (21.4)301 (25.2)
 70–8564 (18.8)115 (18.0)46 (21.4)225 (18.9)
 55–7053 (15.6)89 (14.0)25 (11.6)167 (14.0)
 <5558 (17.1)125 (19.6)48 (22.3)231 (19.4)
  • PDD/NOS, pervasive developmental disorder not otherwise specified-only one comparison value per characteristic. indicates that there were no differences among the groups.