Reproducibility of data-driven dietary patterns in two groups of adult Spanish women from different studies

摘要: The objective of the present study was to assess reproducibility data-driven dietary patterns in different samples extracted from similar populations. Dietary were by applying principal component analyses information collected a sample 3550 women recruited seven screening centres belonging Spanish breast cancer (BC) network (Determinants Mammographic Density Spain (DDM-Spain) study). resulting compared with three obtained previous case-control on female BC (Epidemiological group for research (GEICAM: grupo Espanol de investigacion en mama)) using intake data 973 healthy participants. level agreement between determined both congruence coefficient (CC) pattern loadings (considering CC≥0·85 as fairly similar) and linear correlation scores those statistically significant correlation). conclusions reached methods compared. This is first exploring two studies CC determine similarity. We able reproduce EpiGEICAM Western DDM-Spain (CC=0·90). However, Prudent (CC=0·76) Mediterranean (CC=0·77) not good. all cases, highlighting its arbitrariness determining conclude that widely prevalent better than more population-specific patterns. More methodological are needed establish an measurement threshold