Being nulliparous up to ten years prior to symptom onset and obesity were independent risk factors for MS/CIS although the latter did not reach statistical significance ( Table 4 ).
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Oral Contraceptives and Multiple Sclerosis/Clinically Isolated Syndrome Susceptibility.
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The sentences
Neither we, nor any of the previous studies that also showed a trend towards increased risk of MS with COC use[ 2 , 3 ] addressed this issue.