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Table 1 Medians and interquartile ranges for unconjugated ZEN, zeranol and total mycoestrogens according to selected characteristic among the Jersey Girl Study participants included in these analyses (n = 163)

From: Urinary mycoestrogens and age and height at menarche in New Jersey girls

Characteristic n (%) ZEN
Median(IQR) (ng/ml)
Zeranol
Median(IQR)
(ng/ml)
Total Mycoestrogen Median(IQR)(ng/ml)
Girl’s Race
 White 146 (90) 0.15 (0.35) 0.04 (0) 0.30 (0.71)
 non-White 13 (8) 0.31 (0.66) 0.10 (0.20) 0.53 (1.66)
 Missing 4 (2) 1.10 (1.28) 0.04 (0.17) 1.25 (1.74)
p-value   0.47 0.23 0.26
BMI at Menarche for Age and Gender (CDC)a
 Underweight 9 (6) 0.04 (0) 0.04 (0) 0.30
 Healthy Weight 101 (62) 0.23 (0.28) 0.04 (0) 0.24 (0.51)
 Overweight 16 (10) 0.10 (0.36) 0.04 (0) 0.26 (0.66)
 Obese 12 (7) 0.30 (0.65) 0.04 (0) 0.15 (0.41)
 Missing 25 (15) 0.23 (0.41) 0.04 (0) 0.30 (0.39)
p-value   0.49 0.52 0.77
Age at Menarche (years)
  ≤ 11.8b 59 (22) 0.22 (0.43) 0.04 (0) 0.31 (0.70)
  > 11.8 104 (63) 0.14 (0.32) 0.04 (0) 0.32 (0.89)
 Missing 25 (15) 0.24 (0.39) 0.04 (0) 0.37 (0.67)
p-value   0.49 0.53 0.33
Weight at Menarche (Kg)c
  ≤ 46.5 46 (28) 0.22 (0.49) 0.04 (0.05) 0.30 (0.86)
  > 46.5–52.6 46 (28) 0.09 (0.30) 0.04 (0) 0.31 (0.59)
  > 52.6 46 (28) 0.09 (0.54) 0.04 (0) 0.26 (0.87)
 Missing 25 (15) 0.22 (0.39) 0.04 (0) 0.40 (0.83)
p-value   0.64 0.53 0.27
Height at Menarche (cm)c
  ≤ 156.2 49 (30) 0.27 (0.56) 0.04 (0.07) 0.49 (0.90)
  > 156.2–162.6 52 (32) 0.17 (0.36) 0.04 (0) 0.28 (0.78)
  > 162.6 37 (23) 0.04 (0.29) 0.04 (0) 0.12 (0.44)
 Missing 25 (15) 0.22 (0.39 0.04 (0) 0.40 (0.83)
p-value   0.04 0.04 0.07
  1. Notes: p values from Kruskal-Wallis tests, levels below the LOD were replaced by [LOD/√2] (medians = 0.04 are <LOD), and missing n included girls lost to follow-up and those with no menses yet
  2. Total Mycoestrogen [aglycones]: sum of zearalenone, zeranol, α-zearalenol, β-zearalenol, β-zearalanol, and zearalanol, ZEN Zearalenone, IQR interquartile range
  3. aUnderweight (<5th Percentile), Healthy Weight (5th - <85th percentile), Overweight (85th- < 95th percentile), Obese (>95th percentile) percentile)
  4. b25th percentile of age at menarche distribution among all girls with recorded age at menarche
  5. cCategories are based on tertiles for weight and height distribution at the follow-up date when menarche was reported