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Myocardial Infarction

Catherine Morgan, Roger T Webb, Mathew J Carr, Evangelos Kontopantelis, Carolyn A Chew-Graham, Nav Kapur, Darren M. Ashcroft

ID
PH886
Version ID
1851
Type
Disease or Syndrome
Data Sources
Valid event data range
01/01/2001 - 31/12/2014
Sex
♀  Female ♂  Male
Agreement Date
2018-10-15
Coding system
Read codes v2 ICD10 codes
Collections
ClinicalCodes Repository Phenotype Library
Tags
No tags

Definition

Background:

Self-harm is a major risk factor for suicide, with older adults (older than 65 years) having reportedly greater suicidal intent than any other age group. With the aging population rising and paucity of research focus in this age group, the extent of the problem of self-harm needs to be established. In a primary care cohort of older adults we aimed to investigate the incidence of self-harm, subsequent clinical management, prevalence of mental and physical diagnoses, and unnatural-cause mortality risk, including suicide.

Methods:

The UK Clinical Practice Research Datalink contains anonymised patient records from general practice that routinely capture clinical information pertaining to both primary and secondary care services. We identified 4124 adults aged 65 years and older with a self-harm episode ascertained from Read codes recorded during 2001–14. We calculated standardised incidence and in 2854 adults with at least 12 months follow-up examined the frequency of psychiatric referrals and prescription of psychotropic medication after self-harm. We estimated prevalence of mental and physical illness diagnoses before and after self-harm and, using Cox regression in a matched cohort, we examined cause-specific mortality risks.

Findings:

Overall incidence of self-harm in older adults aged 65 years and older was 4·1 per 10 000 person-years with stable gender-specific rates observed over the 13-year period. After self-harm, 335 (11·7%) of 2854 adults were referred to mental health services, 1692 (59·3%) were prescribed an antidepressant, and 336 (11·8%) were prescribed a tricyclic antidepressant (TCA). Having a diagnosed previous mental illness was twice as prevalent in the self-harm cohort as in the comparison cohort (prevalence ratio 2·10 [95% CI 2·03–2·17]) and with a previous physical health condition prevalence was 20% higher in the self-harm cohort compared to the comparison cohort (1·20 [1·17–1·23]). Adults from the self-harm cohort (n=2454) died from unnatural causes an estimated 20 times more frequently than the comparison cohort (n=48 921) during the first year. A markedly elevated risk of suicide (hazard ratio 145·4 [95% CI 53·9–392·3]) was observed in the self-harm cohort.

Interpretation:

Within primary care, we have identified a group of older adults at high risk from unnatural death, particularly within the first year of self-harm. We have highlighted a high frequency of prescription of TCAs, known to be potentially fatally toxic in overdose. We emphasise the need for early intervention, careful alternative prescribing, and increased support when older adults consult after an episode of self-harm and with other health conditions.

Publications

  • Catherine Morgan, Roger T Webb, Mathew J Carr, Evangelos Kontopantelis, Carolyn A Chew-Graham, Nav Kapur, Darren M. Ashcroft, Self-harm in a primary care cohort of older people incidence, clinical management, and risk of suicide and other causes of death. Psychiatry, 5, 2018.

Clinical Code List

Rows: 23
Code Description Entity type Coding System (ICD-10 Read) Category
14AH.00 H/O: Myocardial infarction in last year res69: myocardial_infarction Read diagnostic
G30..00 Acute myocardial infarction res69: myocardial_infarction Read diagnostic
G30..12 Coronary thrombosis res69: myocardial_infarction Read diagnostic
G30..13 Cardiac rupture following myocardial infarction (MI) res69: myocardial_infarction Read diagnostic
G30..14 Heart attack res69: myocardial_infarction Read diagnostic
G30..15 MI - acute myocardial infarction res69: myocardial_infarction Read diagnostic
G30..17 Silent myocardial infarction res69: myocardial_infarction Read diagnostic
G300.00 Acute anterolateral infarction res69: myocardial_infarction Read diagnostic
G301.00 Other specified anterior myocardial infarction res69: myocardial_infarction Read diagnostic
G301100 Acute anteroseptal infarction res69: myocardial_infarction Read diagnostic
G302.00 Acute inferolateral infarction res69: myocardial_infarction Read diagnostic
G303.00 Acute inferoposterior infarction res69: myocardial_infarction Read diagnostic
G305.00 Lateral myocardial infarction NOS res69: myocardial_infarction Read diagnostic
G307.00 Acute subendocardial infarction res69: myocardial_infarction Read diagnostic
G307000 Acute non-Q wave infarction res69: myocardial_infarction Read diagnostic
G307100 Acute non-ST segment elevation myocardial infarction res69: myocardial_infarction Read diagnostic
G30X000 Acute ST segment elevation myocardial infarction res69: myocardial_infarction Read diagnostic
G30y.00 Other acute myocardial infarction res69: myocardial_infarction Read diagnostic
G30yz00 Other acute myocardial infarction NOS res69: myocardial_infarction Read diagnostic
G30z.00 Acute myocardial infarction NOS res69: myocardial_infarction Read diagnostic
G32..00 Old myocardial infarction res69: myocardial_infarction Read diagnostic
G32..11 Healed myocardial infarction res69: myocardial_infarction Read diagnostic
G32..12 Personal history of myocardial infarction res69: myocardial_infarction Read diagnostic
Rows: 3
Code Description Entity type Coding System (ICD-10 Read) Category
I21 Acute myocardial infarction res69: myocardial_infarction ICD-10 diagnostic
I22 Subsequent myocardial infarction res69: myocardial_infarction ICD-10 diagnostic
I23 Certain current complications following acute myocardial infarction res69: myocardial_infarction ICD-10 diagnostic

API

To Export Phenotype Details:

Format API
XML site_root/api/v1/public/phenotypes/PH886/version/1851/detail/?format=xml
JSON site_root/api/v1/public/phenotypes/PH886/version/1851/detail/?format=json
R Package

# Download here

library(ConceptLibraryClient)


# Connect to API

client = connect_to_API(public=TRUE)


# Get details of phenotype

details = get_phenotype_detail_by_version('PH886', '1851', api_client=client)

To Export Phenotype Code List:

Format API
XML site_root/api/v1/public/phenotypes/PH886/version/1851/export/codes/?format=xml
JSON site_root/api/v1/public/phenotypes/PH886/version/1851/export/codes/?format=json
CSV site_root/phenotypes/PH886/version/1851/export/codes/
R Package

# Download here

library(ConceptLibraryClient)


# Connect to API

client = connect_to_API(public=TRUE)


# Get codelists of phenotype

codelists = get_phenotype_code_list('PH886', '1851', api_client=client)

Version History

Version
ID
Name Owner Publish date
1851 Myocardial Infarction ieuan.scanlon 2022-04-04 currently shown

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