Any youth supplied data at each of the pubertal staging assessments (n = 155 for boys’ genital development, 162 for boys’ pubic hair development, 191 for girls’ breast development, and 186 for girls’ pubic hair development), there had been a number of youth who missed or declined to take part in 1 or much more assessments. Varying slightly from outcome to outcome, 68 ?3 in the sample provided data on five or far more (of seven) occasions, and less than 10 offered information on only one occasion. We tested no matter whether attrition was connected to demographic indicators using a series of analyses of variance. For by far the most part, extent of missingness was not connected to demographic indicators (i.e., mother or companion education, income-to-needs ratio; Fs < 3.19, ps > .05). Nonetheless, the number of missing assessments for girls’ pubic hair development was related to families’ income-to-needs ratio, F(1, 368) = 3.94, p = .05, such that girls in families using a higher income-to-needs ratio at age six months offered fewer assessments. We ran Little’s (1988) test for missing fully at random for the puberty physical and psychological outcome variables separately for boys and girls (provided that analyses would be conducted separately), along with the assumption of missing fully at random was not rejected for either boys, two(1544) = 1585.65, p = .23, or girls, 2(1774) = 1755.75, p = .62.order AK-1 NIH-PA Author Manuscript NIH-PA Author Manuscript NIH-PA Author ManuscriptDev Psychol. Author manuscript; available in PMC 2014 February 19.Marceau et al.PageMeasures We assessed youth on pubertal status employing clinician-reported Tanner stages and on many physical and psychological outcomes, including height, weight, BMI, internalizing troubles, externalizing complications, and risky sexual behaviors. Pubertal development–Annually, beginning at age 9.five, boys’ and girls’ pubertal development was assessed by nurse practitioners or physicians making use of Tanner criteria for stage of maturation (Marshall Tanner, 1969, 1970). Following the Pediatric Study in Office Settings Network study of pubertal improvement and also the American Academy of Pediatrics manual, Assessment of Sexual Maturity Stages in Girls (see Herman-Giddens Bourdony, 1995), the assessment included use of photos displaying the five Tanner stages (prepubescence to full sexual maturity) and breast bud palpation (for the age 10.5?5.5 assessments).1 Every single year clinicians were recertified for precise assessment (requiring 87.five reliability) of both girls (by way of images from the Pediatric Study in Workplace Settings Network study of pubertal improvement; Herman-Giddens Bourdony, 1995) and boys (by way of Tanner photographs adapted from Tanner, 1962). In the case that adolescents were among stages, they have been assigned the decrease stage rating. People “staged out” and were no longer assessed once they were regarded as to possess reached full sexual maturity. Particularly, girls staged out right after possessing accomplished menarche and Tanner Stage 5 for each breast and pubic hair improvement, and boys staged out just after obtaining accomplished Stage 5 for each genital and pubic hair development. We note that researchers generating use of your SECCYD data source should really be conscious that folks who staged out are coded as missing inside the data and require algorithmic extraction and replacement with “true” values. PubMed ID:http://www.ncbi.nlm.nih.gov/pubmed/21029858 The frequency distribution of observed pubertal stage by age, at the same time as typical stage at every single age, is provided in Table 1. Physical growth–Anthropometric measurements have been tak.