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Table 4 Mean percent mammographic density by dietary pattern tertile and stratified by BMI at mammogram

From: Adolescent and early adulthood inflammation-associated dietary patterns in relation to premenopausal mammographic density

Percent mammographic density T1 T2 T3 Ptrendc Pinteraction
Adolescent (n = 709)a
Pro-inflammatory dietary pattern
 BMI < 25 (n = 164) (n = 151) (n = 94)   0.57
46.9 (43.9–49.9) 52.1 (49.0–55.3) 51.8 (46.5–57.0) 0.12
 BMI ≥ 25 (n = 85) (n = 109) (n = 106)  
29.4 (26.0–32.7) 29.0 (26.6–31.4) 31.7 (28.7–34.6) 0.32
AHEI dietary pattern
 BMI < 25 (n = 129) (n = 137) (n = 143)   < 0.0001
49.9 (46.8–53.0) 48.2 (45.6–50.8) 50.5 (48.1–53.0) 0.76
 BMI ≥ 25 (n = 88) (n = 113) (n = 99)  
30.6 (27.7–33.6) 30.8 (28.0–33.5) 27.9 (25.0–30.9) 0.34
Early adulthood (n = 1117)b
Pro-inflammatory dietary pattern
 BMI < 25 (n = 240) (n = 205) (n = 185)   0.05
48.6 (46.5–50.8) 48.8 (46.7–50.8) 46.4 (44.3–48.5) 0.18
 BMI ≥ 25 (n = 163) (n = 155) (n = 169)  
30.8 (28.4–33.3) 31.5 (29.2–33.9) 31.2 (29.1–33.3) 0.82
AHEI dietary pattern
 BMI < 25 (n = 196) (n = 201) (n = 233)   < 0.0001
46.6 (44.6–48.6) 48.9 (47.0–50.8) 48.5 (46.2–50.7) 0.26
 BMI ≥ 25 (n = 146) (n = 167) (n = 174)  
31.0 (28.8–33.2) 32.2 (29.9–34.5) 30.4 (28.1–32.6) 0.65
  1. aAdjusted for adolescent total calorie intake, age at the time of mammogram, BMI at the time of mammogram, BMI at age 18 (kg/m2; cont.), adolescent physical activity (METs/week, 0–43, > 43), adolescent alcohol intake (drinker vs. non-drinkers), age at menarche (≤ 12; 13+ years), age at first birth (AFB) and parity combined (nulliparous; AFB < 25 years, 1–2 kids; AFB 25+ years, 1–2 kids; AFB any age, 3+ kids), history of biopsy-confirmed benign breast disease (yes; no), first-degree family history of breast cancer (yes; no)
  2. bAdjusted for early adulthood total calorie intake, age at the time of mammogram, BMI at the time of mammogram, BMI at age 18 (kg/m2; cont.), early adulthood physical activity (METs/week, 0–8, 9–26, 27+), early adulthood alcohol intake (0 g/day; 0.1 to < 5 g/day; 5+ g/day), age at menarche (< 12; 12; 13; 14+ years), age at first birth (AFB) and parity combined (nulliparous; AFB < 25 years, 1–2 kids; AFB 25+ years, 1–2 kids; AFB any age, 3+ kids), biopsy-confirmed benign breast disease (yes; no), first-degree family history of breast cancer (yes; no)
  3. cTrend test is based on the median of the category