A case-cohort study in @ pregnant Bangladeshi women -LSB- median ( IQR ) gestational age : @ wk ( @-@ wk ) -RSB- who participated in a placebo-controlled vitamin A - or - carotene-supplementation trial was done to assess ORs of miscarriage in women with low - tocopherol ( < @ mol/L ) and - tocopherol ( < @ mol/L ; upper tertile cutoff of the - tocopherol distribution in women who did not miscarry ) .