The median number and quartiles (lower, upper) of addresses per subject in each study center were 2 (1, 2) in Detroit, Iowa, and Seattle, and 1 (1, 3) in Los Angeles.
†Estimated effect for each cytokine expressed as the magnitude change in developmental scores for increment in cytokine category (dichotomized into top quartile and lower three quartiles, reference is the lower three quartiles).
‡Each cytokine is dichotomized into top quartile and lower three quartiles, the reference for each cytokine is the lower three quartiles.
The two species also significantly differed in the numbers of larvae and pupae (P. ferrugineus: median 520, upper quartile 865, lower quartile 222; P. gracilis: median 210, upper quartile 389, lower quartile 88, Mann–Whitney U 22.00, n = 11, p = 0.01).
Although colonies were collected on plants of similar sizes, P. ferrugineus colonies contained a median of 300 adult workers (upper quartile 461, lower quartile 160), while P. gracilis colonies consisted only of approximately 80 adults (upper quartile 106, lower quartile 55; Mann–Whitney U 6.00, n = 11 per species, p < 0.001).
To model the number of sitting hours, subjects were classified into sex-specific quartiles and the lower quartile was used as the reference.
Results: Compared with children with cord ferritin in the 2 median quartiles, those in the lowest quartile scored lower on every test and had significantly worse language ability, fine-motor skills, and tractability.
Kaplan Meier and Cox proportional hazards regression were used to compare time to infection across groups stratified by upper quartile vs. lower quartiles GIA responders.
a: upper quartile vs. lower quartile.
