The previous studies in this series1,2 utilized illness histories covering time periods of 6 months. For the present study, health records were obtained extending over time periods of 4 years (girls) and 5 years (boys).
No subject duplication occurs in the 3 studies; independent samples of Iowa City white schoolchildren were drawn. Martens and Meredith1 used 90 kindergarten children between ages 4.7 years and 6.4 years; Evans2 used 93 nursery school children between ages 2.5 years and 5.5 years; and the present study involves 135 elementary school children between ages 5.0 years and 10.0 years.
Martens and Meredith1 investigated associations between amount of absence from school for illness during a 6-month period, beginning in the autumn (x-variable) and each of 25 selected measures of body size, body form, and growth velocity (y-variables). None of their correlation findings was of sufficient magnitude to be useful
MEREDITH HV, KNOTT VB. Illness History and Physical GrowthIII. Comparative Anatomic Status and Rate of Change for Schoolchildren in Different Long-Term Health Categories. Am J Dis Child. 1962;103(2):146–151. doi:10.1001/archpedi.1962.02080020152007