After adjustment for baseline age , 25-hydroxyvitamin D , SBP and orthostatic fall , the fall in SBP was less in the vitamin D group at 3 months [ treatment effect 6mmHg , 95 % confidence interval ( CI ) 0 to 12 ] , but repeated-measures analysis showed no significant treatment effect ( 3mmHg for systolic fall , 95 % CI -1 to 8 ; 1mmHg for diastolic fall , 95 % CI -1 to 3 ) .