Table 2

Factor loading matrix and explained variance for nutrient patterns identified by factor analysis
Nutrient Factor 1 Factor 2 Factor 3 Factor 4
Protein 0.18 0.86 −0.05 0.06
Total fat 0.13 0.69 0.01 0.12
Cholesterol −0.04 0.66 0.05 0.05
Vitamin A 0.18 0.10 0.10 0.37
Thiamine 0.97 0.06 −0.00 −0.00
Riboflavin 0.97 0.07 0.00 0.01
Niacin 0.88 0.05 −0.05 −0.03
Vitamin C 0.02 −0.21 −0.04 0.73
Vitamin E 0.00 −0.09 0.82 0.06
Calcium −0.08 0.30 −0.04 0.68
Magnesium −0.06 0.05 0.74 0.05
Iron 0.02 0.08 0.68 −0.09
Zinc 0.11 0.00 −0.05 −0.07
Selenium −0.06 0.77 −0.10 −0.20
Potassium −0.00 −0.08 0.76 −0.08
Sodium −0.06 0.10 −0.04 0.04
Copper −0.04 0.15 0.08 0.29
Proportion of explained variance (%) 17.84 13.98 13.11 7.72
Cumulative explained variance (%) 17.84 31.82 44.93 52.65

NOTE: Estimates from a PCFA done on 17 nutrients. Loadings ≥0.32 are shown in boldface.

Bian et al.

Bian et al. Nutrition Journal 2013 12:106   doi:10.1186/1475-2891-12-106

Open Data