From: Early behavioral and physiological markers of social anxiety in infants with fragile X syndrome
 | FXS (n = 32) | LRC (n = 41) | p value |
---|---|---|---|
Key variables | Â | Â | Â |
 Age, M (SD) | 12.41 (1.49) | 12.41 (.60) | .995 |
 Number of females | 10 | 9 | .369 |
 Mullen ELC, M (SD) | 76.55 (21.52) | 98.44 (12.83) | < .001 |
Descriptive variablesa | Â | Â | Â |
 Race, n |  |  |  |
  American Indian/Alaska Native | 0 | 1 | – |
  Asian | 1 | 0 | – |
  Black or African American | 3 | 3 | – |
  White | 21 | 34 | – |
  More than one race | 8 | 2 | – |
  Unknown | 0 | 1 | – |
 Ethnicity, n |  |  |  |
  Hispanic or Latino | 1 | 1 | – |
  Not Hispanic or Latino | 30 | 39 | – |
  No answer | 0 | 1 | – |
 Household income, M (n) | 62,715 (18) | 66,657 (35) | – |