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Plasma vitamin D, past chest illness, and risk of future chest illness in chronic spinal cord injury (SCI): a longitudinal observational study.
- Source :
-
Spinal cord [Spinal Cord] 2020 Apr; Vol. 58 (4), pp. 504-512. Date of Electronic Publication: 2020 Jan 16. - Publication Year :
- 2020
-
Abstract
- Study Design: Observational study.<br />Objective: Assess associations between vitamin D levels and other risk factors on future chest illness in a chronic spinal cord injury (SCI) cohort.<br />Setting: Veterans Affairs Boston and the Boston, MA community.<br />Methods: Between August 2009 and August 2017, 253 participants with chronic SCI were followed over a median of 3.2 years (up to 7.4 years) with two to four visits a median of 1.7 years apart. At each visit, plasma 25-hydroxyvitamin D level was obtained, spirometry performed, and a respiratory questionnaire assessing chest illnesses since last visit was completed. Repeated measures negative binomial regression was used to assess chest illness risk longitudinally.<br />Results: At entry, 25% had deficient vitamin D levels (<20 nanograms/milliliter (ng/ml)), 52% were insufficient (20 to <30 ng/ml), and 23% were sufficient (≥30 ng/ml). Over 545 study visits, chest illnesses (n = 106) were reported by 60 participants. In multivariable models (including previous chest illness history), deficient vitamin D levels (compared with those with sufficient levels) were associated with future chest illness though with wide confidence limits (relative risk (RR) = 1.36, 95% confidence intervals (CI) = 0.74, 2.47). The strongest association with chest illness during the follow-up period was in persons who reported pneumonia/bronchitis after injury and a chest illness in the three years before study entry (RR = 7.62; 95% CI = 3.70, 15.71).<br />Conclusion: Assessed prospectively in chronic SCI, there was a suggestive association between deficient vitamin D levels and future chest illness. Past chest illness history was also strongly associated with future chest illness.
- Subjects :
- Adult
Aged
Chronic Disease
Female
Humans
Longitudinal Studies
Lung Diseases diagnosis
Male
Middle Aged
Prognosis
Risk Factors
United States
United States Department of Veterans Affairs
Vitamin D blood
Lung Diseases etiology
Spinal Cord Injuries blood
Spinal Cord Injuries complications
Vitamin D analogs & derivatives
Subjects
Details
- Language :
- English
- ISSN :
- 1476-5624
- Volume :
- 58
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Spinal cord
- Publication Type :
- Academic Journal
- Accession number :
- 31949283
- Full Text :
- https://doi.org/10.1038/s41393-019-0409-7