TABLE 1

Sample Characteristics

CharacteristicSample
Middle ChildhoodLate Adolescence/Early Adulthood
Age range, y6–12a18–32b
Sample size1323210
Female gender, %5360
Study designLongitudinalSingle time point
Time lag between first and last assessments, mo13NA
  • NA indicates not applicable.

  • a Age is reported as measured at the first wave of data collection. A total of 98.8% of this sample was between 8 and 11 years at this time. Analysis that excluded those who were younger than 8 or older than 11 did not differ meaningfully from analysis that used the full sample; therefore, participants of all ages were included in the reported analyses.

  • b A total of 96.2% of this sample was between 18 and 24 years at the time of assessment. Excluding those who were older than 24 years did not meaningfully change the results of the analyses; therefore, participants of all ages were included in the reported analyses.