TY - GEN
T1 - Pain in the low back and elsewhere
T2 - prevalence, patterns, and consequences
AU - Øverås, Cecilie Krage
PY - 2023/5/22
Y1 - 2023/5/22
N2 - It is common for people with persistent low back pain (LBP) to have co-occurringmusculoskeletal (MSK) pain. Still, there is limited knowledge of which pain sites mostcommonly co-occur with persistent LBP, how stable these patterns are over time and possibleconsequences. The current thesis has co-occurring MSK pain alongside LBP as the overalltopic and covers its prevalence, patterns, and consequences over time.Paper I and II was the study protocol and a systematic review dealing with the prevalence andpatterns of distribution of co-occurring MSK pain among adults with persistent LBP. Datacollection was from observational studies in general, working, and clinical populations and atotal of nineteen studies with 34,492 individuals with persistent LBP were included. Thereview found co-occurring pain to be common among people with persistent LBP, and maincategories identified were: 1) neck (18-58%/n=5020/10413), 2) extremity (6-50%/n=3576/9592), and 3) multi-site pain (10-89%). More co-occurring MSK pain sites wereobserved among females and more often reported in people with more disabilities. Cooccurring extremity pain consisted of a population with higher mean age. Despite the overalllow risk of bias, the main limitation was the considerable between-study heterogeneity andvarying reporting of co-occurring MSK pain sites.Paper III was analysis of consecutive cross-sectional studies from the population-basedNorwegian HUNT Study. With data from 27,607 adults with persistent LBP participating inHUNT2 (1995-1997), and/or HUNT3 (2006-2008) and/or HUNT4 (2017-2019), we examinedthe prevalence and latent patterns of persistent LBP and co-occurring persistent MSK painand its consistency over three decades. The age-standardized prevalence and patterns ofpersistent LBP with co-occurring MSK pain were consistent in the population over time. MSKpain most often co-occurred in the neck, shoulder, and hip/thigh. We identified four distinctphenotypes: 1) ‘LBP only’, 2) ‘LBP with neck/shoulder pain’, 3) ‘LBP with lowerextremity/wrist/hand pain’ and 4) ‘LBP with multisite pain’. People in phenotype 3 wereslightly older than the others, and phenotype 4 had a higher proportion of females and,overall, more ill health. These phenotypes also appeared stable across the three decades.Paper VI was a secondary analysis from the SELFBACK trial where an artificial intelligence (AI)-based app for self-management support of LBP was developed and tested in a randomised,controlled trial. In the trial, an overall small but statistically significant benefit on LBP-relateddisability in favour of the AI-based app was found compared to usual care alone. Since cooccurring MSK pain and multimorbidity are considered more complex to manage and resilientto treat, we aimed to assess if their presence would modify the effect or influence theoutcome of the SELFBACK intervention over the 9-month follow-up period. We found thathaving co-occurring MSK pain or multimorbidity did not modify the effect of the SELFBACK appon LBP-related disability or other core outcomes, despite worse baseline and follow-up scorescompared to those without multimorbidity and fewer sites of co-occurring MSK pain.Overall, this thesis has shown that having co-occurring MSK pain alongside persistent LBP ismarkedly more common than having LBP alone and that its prevalence and the four identifieddistinct pain site phenotypes, at a population level, appear stable over the past threedecades. Lastly, co-occurring MSK pain or multimorbidity does not modify the effect of amHealth intervention.
AB - It is common for people with persistent low back pain (LBP) to have co-occurringmusculoskeletal (MSK) pain. Still, there is limited knowledge of which pain sites mostcommonly co-occur with persistent LBP, how stable these patterns are over time and possibleconsequences. The current thesis has co-occurring MSK pain alongside LBP as the overalltopic and covers its prevalence, patterns, and consequences over time.Paper I and II was the study protocol and a systematic review dealing with the prevalence andpatterns of distribution of co-occurring MSK pain among adults with persistent LBP. Datacollection was from observational studies in general, working, and clinical populations and atotal of nineteen studies with 34,492 individuals with persistent LBP were included. Thereview found co-occurring pain to be common among people with persistent LBP, and maincategories identified were: 1) neck (18-58%/n=5020/10413), 2) extremity (6-50%/n=3576/9592), and 3) multi-site pain (10-89%). More co-occurring MSK pain sites wereobserved among females and more often reported in people with more disabilities. Cooccurring extremity pain consisted of a population with higher mean age. Despite the overalllow risk of bias, the main limitation was the considerable between-study heterogeneity andvarying reporting of co-occurring MSK pain sites.Paper III was analysis of consecutive cross-sectional studies from the population-basedNorwegian HUNT Study. With data from 27,607 adults with persistent LBP participating inHUNT2 (1995-1997), and/or HUNT3 (2006-2008) and/or HUNT4 (2017-2019), we examinedthe prevalence and latent patterns of persistent LBP and co-occurring persistent MSK painand its consistency over three decades. The age-standardized prevalence and patterns ofpersistent LBP with co-occurring MSK pain were consistent in the population over time. MSKpain most often co-occurred in the neck, shoulder, and hip/thigh. We identified four distinctphenotypes: 1) ‘LBP only’, 2) ‘LBP with neck/shoulder pain’, 3) ‘LBP with lowerextremity/wrist/hand pain’ and 4) ‘LBP with multisite pain’. People in phenotype 3 wereslightly older than the others, and phenotype 4 had a higher proportion of females and,overall, more ill health. These phenotypes also appeared stable across the three decades.Paper VI was a secondary analysis from the SELFBACK trial where an artificial intelligence (AI)-based app for self-management support of LBP was developed and tested in a randomised,controlled trial. In the trial, an overall small but statistically significant benefit on LBP-relateddisability in favour of the AI-based app was found compared to usual care alone. Since cooccurring MSK pain and multimorbidity are considered more complex to manage and resilientto treat, we aimed to assess if their presence would modify the effect or influence theoutcome of the SELFBACK intervention over the 9-month follow-up period. We found thathaving co-occurring MSK pain or multimorbidity did not modify the effect of the SELFBACK appon LBP-related disability or other core outcomes, despite worse baseline and follow-up scorescompared to those without multimorbidity and fewer sites of co-occurring MSK pain.Overall, this thesis has shown that having co-occurring MSK pain alongside persistent LBP ismarkedly more common than having LBP alone and that its prevalence and the four identifieddistinct pain site phenotypes, at a population level, appear stable over the past threedecades. Lastly, co-occurring MSK pain or multimorbidity does not modify the effect of amHealth intervention.
KW - Low back pain
KW - Co-occurring musculoskeletal pain
KW - Multimorbidity
KW - Systematic review
KW - Latent class analysis
KW - mHealth
KW - Artificial intelligence
KW - Self-management
U2 - 10.21996/bqq2-3d50
DO - 10.21996/bqq2-3d50
M3 - Ph.D. thesis
PB - Syddansk Universitet. Det Sundhedsvidenskabelige Fakultet
ER -