High Prevalence of Hypovitaminosis D in Indian Chronic Low Back Patients

Pain Physician. Sep-Oct 2015;18(5):E853-62.

Abstract

Background: Vitamin D has a significant role to play in bone metabolism and neuromuscular function. Several researchers have indicated that Vitamin D deficiency may be possibly related to chronic musculoskeletal pain including chronic low back pain (CLBP).

Objectives: The present study was conducted to determine the prevalence of hypovitaminosis D and its contribution to chronic lower back pain.

Study design: Controlled study.

Setting: Outpatient pain clinic of tertiary care hospital.

Methods: Data presented in this manuscript are from patients who were screened for inclusion in an open label, single arm clinical trial aimed to assess the effectiveness of vitamin D supplementation in patients with CLBP. Consecutive patients visiting the outpatient pain clinic of a tertiary care hospital with a diagnosis of CLBP with or without leg pain were recruited. A visual analogue scale (VAS) was used to measure low back pain intensity, and the Modified Oswestry disability questionnaire (MODQ) was used to measure functional ability. Plasma 25-OHD levels of all patients were measured and the prevalence of hypovitaminosis D was calculated. The multivariate logistic regression model was used to investigate the association between vitamin D deficiency and patient characteristics.

Results: A total of 328 patients were included in the study. Mean age of the study population was 43.8 years. Two hundred eighty-two (86%) (men 153/172 [89%], women 129/156 [83%]) of patients had below normal plasma vitamin D levels. Among these, 217 (66%) (men 126 [73%], women 91 [58%]) were found to be deficient and 65 (20%) (men 27 [16%], women 38 [24%]) were had insufficient levels. Multivariate regression analysis found that men were significantly more prone to have deficiency as compared to women (OR = 1.78 (1.10-2.88), P = 0.02). We also found a significantly positive relationship between vitamin D deficiency and increased functional disability (OR = 1.53 (1.24-1.87), P = 0.01). However, we did not find any relationship with pain severity, presence of other co-morbidities and educational level.

Limitations: Not possible to access a good quality data on sun exposure and vitamin D dietary inake dieat in study population. No bone scans were performed.

Conclusion: The result of this study provides a message about the high prevalence of hypovitaminosis D in the Indian CLBP population. Clinical guidelines for managing CLBP should include assessment of vitamin D status, together with advice on appropriate vitamin D supplementation in those found to be deficient.

Clinical trial registration: CTRI/2014/03/004459.

Publication types

  • Clinical Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Cross-Sectional Studies
  • Disabled Persons
  • Educational Status
  • Female
  • Humans
  • Hydroxycholecalciferols / blood
  • India / epidemiology
  • Low Back Pain / complications*
  • Low Back Pain / epidemiology*
  • Male
  • Middle Aged
  • Outpatients
  • Pain Measurement
  • Prevalence
  • Sex Factors
  • Vitamin D Deficiency / complications*
  • Vitamin D Deficiency / epidemiology*
  • Young Adult

Substances

  • Hydroxycholecalciferols

Associated data

  • CTRI/CTRI/2014/03/004459