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. Author manuscript; available in PMC: 2016 Jun 1.
Published in final edited form as: Int J Hyg Environ Health. 2015 Mar 23;218(4):407–413. doi: 10.1016/j.ijheh.2015.03.006

Table 1.

Participant Characteristics

Participant Characteristics Median (Q1, Q3) or N (%)a
Age (years) 15 (13, 17)
Sex
    Male 463 (55.5%)
Race/ethnicity
    Non-Hispanic white 254 (30.4%)
    Mexican American 237 (28.4%)
    Non-Hispanic black 262 (31.4%)
    Other Hispanic and other race 82 (9.8%)
Poverty-income ratio (PIR) 1.5 (0.80, 3.11)
    Participants with PIR<1 277 (33.2%)
Body mass index (BMI) (kg/m2) 22.4 (19.9, 26.7)
Waist circumference (cm) 77.6 (71.4, 88.5)
Serum cotinine (ng/mL) 0.089 (0.021, 1.02)
    Participants with serum cotinine>=10 ng/mL 103 (12.3%)
Fasting glucose (mg/dL) 94.0 (89.2, 98.2)
Fasting insulin (μU/mL) 10.4 (7.16, 15.64)
a

Reported as “median (Q1, Q3)” for age, PIR, BMI, waist circumference, serum cotinine, fasting glucose and fasting insulin.

Reported as “N of participants (%)” for sex, race/ethnicity, “participants with PIR<1” and “participants with serum cotinine>=10ng/mL”.