Trend analysis revealed a decreasing trend in the association between Log vitamin E and constipation ( P for trend <0.001 in the unadjusted model, P for trend = 0.004 in Model II, and P for trend = 0.005 in Model III). 3.3 Subgroup analysis To assess the potential effect of modification of Log vitamin E intake on constipation, stratified analyses were conducted, including various subgroups.
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Association between dietary vitamin E intake and constipation: NHANES 2005-2010.
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