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Table 1 Descriptive and demographic data for study sample

From: A quantitative measure of restricted and repetitive behaviors for early childhood

Variable Number Percent Mean (SD)
Age in months 914   19.7 (2.4)
Gestational age (days) 783a   275.2 (14.2)
Birth weight (grams) 895a   3493 (540)
Sex
 Females 442 48   
 Males 472 52   
Race/ethnicity
 White 814 89   
 Non-white or mixed 100 11   
Parent’s education
 Some college or less 113 12   
 College degree 429 47   
 Graduate degree 372 41   
  1. aGestational age and birth weight data not available for all cases