Dietary fatty acids intake and endometrial cancer risk: a dose-response meta-analysis of epidemiological studies.

Furthermore, the majority of results showed borderline significance without or with little heterogeneity in the subgroup analyses except for these studies without using energy-adjusted model or without adjustment for oral contraceptive use (Table 4 ).

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When stratified by study design, we found borderline significant result in cohort study (RR = 0.97; 95% CI = 0.93–1.00), with low heterogeneity ( I 2 = 15.3%, P for heterogeneity = 0.31).

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