Table 3

Multivariate-adjusteda mean value (95% CI) of percent breast density by quartiles of total caloric, fat, and cholesterol intake

Allb,c (n = 1508)Premenopausal (n = 283)Postmenopausal (n = 1225)
Meana95% CInMeana95% CInMeana95% CI
Total caloric intake (kcal)
≤1460.936(34–38)6644(38–50)31133(30–35)
>1460.9–1829.235(33–38)7040(34–46)30732(30–35)
>1829.2–2314.234(32–37)8238(33–43)29531(29–34)
>2314.235(35–37)6542(36–49)31231(29–34)
P trend d 0.080.350.17
Type of fat
Total fat (g)
≤56.835(33–37)4941(35–47)32832(30–34)
>56.8–64.736(33–38)7042(36–48)30733(31–35)
>64.7–73.134(32–37)8039(33–45)29732(29–34)
>73.135(33–37)8440(35–45)29332(29–34)
P trend d 0.780.550.73
Saturated fat (%)e
≤0.3135(33–38)3844(37–51)33932(30–34)
>0.31–0.3335(32–37)7542(36–48)30231(29–34)
>0.33–0.3636(34–38)7342(36–48)30433(31–35)
>0.3634(32–37)9737(32–43)28032(30–34)
P trend d 0.50.030.8
Monounsaturated fat (%)e
≤0.3735(32–37)8138(32–44)29632(30–34)
>0.37–0.3836(33–38)7643(37–49)30132(30–34)
>0.38–0.3935(33–37)8239(33–45)29532(30–34)
>0.3935(32–37)4442(36–48)33332(30–34)
P trend d 0.110.270.62
Polyunsaturated fat (%)e
≤0.1735(32–38)9438(33–44)28332(30–35)
>0.17–0.1935(33–37)6739(34–45)31032(30–34)
>0.19–0.2235(33–37)6843(38–50)30931(29–34)
>0.2235(33–38)5442(35–49)32332(30–34)
P trend d 0.990.050.64
P:S ratio
≤0.4835(32–37)10038(32–44)27732(30–34)
>0.48–0.5735(33–38)6740(34–47)31032(30–34)
>0.57–0.6935(32–37)6543(36–50)31231(29–33)
>0.6935(33–38)5143(36–50)32632(30–34)
P trend d 0.60.030.74
ω-3 FA (g)
≤0.1135(33–38)7540(34–45)30233(30–35)
>0.11–0.1735(33–37)7940(35–46)29832(30–34)
>0.17–0.2635(33–38)6940(35–46)30832(30–34)
>0.2635(32–37)6042(35–48)31731(29–34)
P trend d 0.580.480.3
Cholesterol (mg)
≤187.035(32–37)5140(33–46)32632(30–34)
>187.0–225.736(33–38)7241(34–47)30533(31–35)
>225.7–273.536(33–38)8239(34–44)29533(31–35)
>273.534(32–37)7842(36–47)29931(28–33)
P trend d 0.580.560.22
  • a All analyses (except total caloric intake) are adjusted for caloric intake, age, age2, body mass index, WHR, physical activity, age at menarche, age at first birth and number of births combined, self-reported alcohol intake, smoking, family history of breast cancer, hormone replacement usage (all and postmenopausal women), and oral contraceptive usage (premenopausal women).

  • b The analyses for all women are performed on quartiles of the energy-adjusted dietary variable.

  • c Analyses for all women combined are also adjusted for menopausal status.

  • d Test for trend is an F test of the linear contrast.

  • e Fat variables are a percentage of total fat intake.