Evidence map›Paper›PMID 33843692›Full record

Observational studyJournal of neuromuscular diseases2021

Characterization of Adult Patients With SMA Treated in US Hospital Settings: A Natural History Study in the Premier Healthcare Database.

Nicole B Johnson, Crystal Proud, Christina L Wassel, Jill Dreyfus, Thos Cochrane, Angela D Paradis

Open access · bronzeAbstract readObservational Study
In one paragraph

Observational study 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 2 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed, 1 pooled it
0.4field-weighted citation impact, top 39% 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

2 citing papers in PubMed, 1 synthesis or guideline pooled it, 4 citations in OpenAlex.

  1. Pooled it
  2. Review
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

6 authors at 3 institutions in 1 country.

Nicole B JohnsonBiogen, Cambridge, MA, USA.
Crystal ProudChildren's Hospital of The King's Daughters, Norfolk, VA, USA.
Christina L WasselPremier Inc., Charlotte, NC, USA.
Jill DreyfusPremier Inc., Charlotte, NC, USA.
Thos CochraneBiogen, Cambridge, MA, USA.
Angela D ParadisBiogen, Cambridge, MA, USA.
Biogen (United States) · USPremier Research Group · USChildren's Hospital of The King's Daughters · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSpinal muscular atrophy (SMA) is a rare genetic disease characterized by progressive muscular weakness and atrophy resulting from motor neuron degeneration. Limited information is available on disease progression among older SMA patients, particularly adults.

objectiveThis study sought to characterize the natural history of SMA among adult patients in US hospital settings through the assessment of symptoms, complications, costs, and healthcare resource utilization (HRU) over 3 years before the availability of disease-modifying therapies.

methodsThe study population included adult (≥18 years) patients with inpatient and/or hospital-based outpatient discharge records and ≥2 primary or secondary SMA ICD-9 codes ≥30 days apart in the Premier Healthcare Database during the main study period (2007-2014). Index date was the date of the first SMA ICD-9 code. The frequency of SMA-related symptoms and complications was assessed 1 year preindex through 2 years postindex to characterize disease progression. Costs and HRU were also assessed across the study period.

resultsA total of 446 adult patients from 337 US hospitals met inclusion criteria for these analyses. All evaluated SMA-related symptoms and complications increased steadily over time, from 1 year preindex to 2 years postindex both overall and in each age group. Adult patients with SMA had increasing total costs and HRU over the 3-year study period: total costs were $1,759 preindex and $12,308 by 2 years postindex.

conclusionsFindings are consistent with increasing disease burden over time and support the progressive nature of SMA for adult patients with hospital interactions.

Indexed as

AdolescentAdultDatabases, FactualFemaleHospitalsHumansLongitudinal StudiesMaleMiddle AgedMuscular Atrophy, SpinalRetrospective StudiesUnited StatesYoung Adultburden of illnesscomplicationshealth expendituressigns and symptomsSpinal muscular atrophy

Identifiers

PMID33843692
PMCPMC8385506
OpenAlexW3150531580

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.