60543
document
Can a questionnaire predict vitamin D status in postmenopausal women ? OBJECTIVE Our objective was to determine whether a questionnaire can identify individuals with vitamin D insufficiency ( VDI ) . DESIGN Women completed the Vitamin D & Sun ( VIDSUN ) questionnaire and we measured their serum 25-hydrocyvitamin D ( 25 ( OH ) D ) levels . We assessed the sensitivity and specificity of the questionnaire to identify VDI ( 25 ( OH ) D level < 50 nmol/l ) . SETTING Clinical Research Unit , University of Wisconsin-Madison . SUBJECTS Postmenopausal women . RESULTS We recruited 609 postmenopausal women with a mean age of 61 ( sd 6 years ) , of whom 113 ( 19 % ) had VDI . Women with VDI were more likely to be black ( 17 % v. 2 % , P < 0.001 ) , heavier ( BMI 33.0 ( sd 7 ) kg/m2 v. 29.0 ( sd 7 ) kg/m2 , P < 0.001 ) and less likely to tan in the past year ( 49 % v. 72 % , P < 0.001 ) , use sunscreen ( 57 % v. 72 % , P < 0.001 ) or report sun exposure in the last 3 months . They consumed less vitamin D from supplements ( 2.15 ( sd 5.24 ) μg/d ( 86 ( sd 210 ) IU/d ) v. 4.55 ( sd 8.48 ) μg/d ( 188 ( sd 344 ) IU/d ) , P = 0.003 ) . In logistic regression models , black race , BMI , suntan within the past year , sun exposure in the past 3 months , sunscreen use and supplemental vitamin D intake were the most useful questions to identify VDI . From these six items , a composite score of ≤ 2.25 demonstrated ≥89 % sensitivity but ≤35 % specificity for VDI . CONCLUSIONS The VIDSUN questionnaire provides an initial tool to identify postmenopausal women at high or low risk of VDI . Existing studies suggest that inclusion of physical activity and TAG levels might improve the performance of the VIDSUN questionnaire .
60544
Intervention_Educational
questionnaire
60545
Intervention_Educational
questionnaire
60546
Intervention_Other
Vitamin D & Sun ( VIDSUN ) questionnaire
60547
Outcome_Physical
D status
60548
Outcome_Physical
vitamin D insufficiency
60549
Outcome_Physical
serum 25-hydrocyvitamin D ( 25 ( OH ) D ) levels
60550
Outcome_Other
sensitivity and specificity
60551
Outcome_Physical
identify VDI ( 25 ( OH ) D level
60552
Outcome_Physical
VDI
60553
Outcome_Other
black
60554
Outcome_Physical
BMI
60555
Outcome_Mental
likely to tan in the past year
60556
Outcome_Mental
sunscreen
60557
Outcome_Mental
report sun exposure in the last 3 months
60558
Outcome_Physical
vitamin D from supplements
60559
Participant_Condition
postmenopausal women
60560
Participant_Condition
vitamin D insufficiency ( VDI ) .