Evidence map›Paper›PMID 33749617›Full record

ArticleJournal of neuromuscular diseases2021

Burden of Spinal Muscular Atrophy (SMA) on Patients and Caregivers in Canada.

H J McMillan, B Gerber, T Cowling, W Khuu, M Mayer, J W Wu, B Maturi, K Klein-Panneton, C Cabalteja, H Lochmüller

Open access · bronzeAbstract read
In one paragraph

Article in Journal of neuromuscular diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 5 pooled it
5.7field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

40 citing papers in PubMed, 5 syntheses or guidelines pooled it, 60 citations in OpenAlex.

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  12. Counting the Cost: The Hidden Financial Realities of Neuromuscular Disease Through Patient and Family Perspectives.Health expectations : an international journal of public participation in health care and health policy · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 2 institutions in 1 country.

H J McMillanDepartment of Pediatrics, Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa, ON, Canada.
B GerberMedlior Health Outcomes Research Ltd., Calgary, AB, Canada.
T CowlingMedlior Health Outcomes Research Ltd., Calgary, AB, Canada.
W KhuuMedlior Health Outcomes Research Ltd., Calgary, AB, Canada.
M MayerMedlior Health Outcomes Research Ltd., Calgary, AB, Canada.
J W WuHoffmann-La Roche Limited, Mississauga, ON, Canada.
B MaturiHoffmann-La Roche Limited, Mississauga, ON, Canada.
K Klein-PannetonHoffmann-La Roche Limited, Mississauga, ON, Canada.
C CabaltejaHoffmann-La Roche Limited, Mississauga, ON, Canada.
H LochmüllerDepartment of Pediatrics, Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa, ON, Canada.
Roche (Canada) · CAUniversity of Ottawa · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSpinal muscular atrophy (SMA) is a rare neurodegenerative disease characterized by progressive muscular weakness, which occurs in one in 6,000 to 10,000 live births. The burden of SMA on Canadian patients and caregivers is not known.

objectiveTo characterize the burden of SMA in Canada as reported by patients and caregivers, including disease and treatment impacts, indirect costs, and caregiver burden.

methodsSurveys were distributed by Cure SMA Canada and Muscular Dystrophy Canada to individuals with SMA and their caregivers. The online surveys were anonymous and completed between January 28 and February 21, 2020.

results965 patient and 962 caregiver responses met the eligibility criteria. Patients reported SMA subtypes as: type I (25.0%), type II (41.3%), type III (29.3%). Using the EQ-5D, patients were shown to have impaired quality of life with an average health utility index of 0.49 (SD: 0.26). The median expenditure was $4,500 CAD (IQR: $1,587 - $11,000) for assistive devices; $6,800 CAD (IQR: $3,900-$13,000) on health professional services; and $1,200 CAD (IQR: $600 -$3,100) on SMA-related travel and accommodation in the past 12 months. Caregivers reported needing respite care (45.7%), physiotherapy for an injury from a lift/transfer (45.7%), or other health impacts (63.3%). Caregivers reported changes to personal plans, sleep disturbances, and work adjustments, with a mean Caregiver Strain Index score of 7.5 [SD: 3.3].

conclusionSMA in Canada is associated with a significant burden for patients and their caregivers.

Indexed as

AdolescentAdultCanadaCaregiver BurdenCaregiversChildChild, PreschoolCost of IllnessFemaleHumansMaleMiddle AgedMuscular Atrophy, SpinalQuality of LifeSurveys and QuestionnairesYoung Adultcaregivers economicschronic diseasecost of illnessmedicalmuscle weaknessMuscular atrophyneurodegenerative diseasesquality of lifespinalspinal muscular atrophies of childhood

Identifiers

PMID33749617
PMCPMC8385498
OpenAlexW3136276473

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.