Does back pain prevalence really decrease with increasing age? A systematic review.
BACKGROUND
It is believed that the prevalence of back pain decreases around the middle of the sixth decade. However, back pain is still among the most commonly reported symptoms in the elderly and osteoarthritis, disc degeneration, osteoporosis and spinal stenosis all increase with age. In light of this, it is difficult to understand why the prevalence of back pain would decrease with increasing age.


OBJECTIVE
This study aimed at summarising the scientific evidence on the trends of back pain prevalence with age.


METHODS
Population-based studies reporting the prevalence of back pain, including people aged 65 years and over, were systematically retrieved from several bibliographic databases. These were read and assessed by two reviewers, and papers retained ('good quality studies') were aggregated according to specific criteria.


RESULTS
Good quality studies showed a large heterogeneity as to their methods and prevalence figures. No specific patterns were detected by country nor outcome measure. However, most studies that considered severe forms of back pain found an increase of prevalence with increasing age. The curvilinear association between age and back pain prevalence that is widely mentioned in the literature was found only for benign and mixed problems.


CONCLUSIONS
The evidence concerning the association of back pain prevalence with age is more sparse than currently believed and this association seems to be modified by the severity of the problem. This knowledge could have important public health implications, as the proportion of older people will increase considerably in the coming years in most industrialised societies.
Dionne
Clermont E
CE
Population Health Research Unit, Research Centre of the Laval University Affiliated Hospital, Quebec, Canada. clermont.dionne@uresp.ulaval.ca
Dunn
Kate M
KM
Croft
Peter R
PR
D017677:Age Distribution; D000367:Age Factors; D000375:Aging / Q000502:physiology*; D001416:Back Pain / Q000453:epidemiology*; D006801:Humans; D015995:Prevalence