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Table 1 General descriptive characteristics of the studies included in the review (n = 77)

From: Methods and validity indicators for measuring adherence to statins in secondary cardiovascular prevention: a systematic review

First author and publication year

Study location

Study design

Study population

Study setting

Adherence/persistence?

Sample size

Ali M, 2023 [24]

New Zealand

Cohort

Patients aged 35–84 years with ACS

Hospital

Adherence

30,452

Allonen J, 2012 [25]

Finland

Cohort

ACS patients undergoing CA

Hospital

Adherence and persistence

2091

Alsabbagh W, 2017 [26]

Canada

Cohort

Patients aged ≥ 30 who suffered an ACS after AH

Hospital

Adherence

9051

Al-Khadra S, 2014 [31]

Germany

RCT

Patients aged ≥ 65 discharged from HA after a first or recurrent AMI

Hospital

Persistence

259

Bell KJ, 2011 [32]

Australia and New Zealand

RCT

Patients 31–75 with high cholesterol and a history of AMI/UA

Outpatient clinic

Adherence

9014

Blackburn DF, 2005 [33]

Canada

Cohort

Patients aged 30–70 (first cardiovascular event in the last year)

Outpatient and inpatient setting

Adherence

1221

Booth JN, 2017 [34]

USA

Cohort

Patients aged ≥ 66 and ≤ 110 who suffered AMI

Hospital

Persistence

158,795

Brogaard HV, 2012 [35]

Denmark

Cohort

Patients discharged from HA after diagnosis of AMI

Hospital

Adherence

474

Brown R, 2021 [36]

UK

Cohort

Patients ≥ 18 years (HA for AMI)

Hospital

Adherence

11,031

Carey IM, 2012 [37]

UK

Cohort

Patients aged 30–84 after their first AMI

Outpatient clinic

Persistence

6988

Chan V, 2008 [38]

USA

Retrospective cohort study

Adults aged 18–64 years, discharged after MI

Inpatient and outpatient

Adherence

387

Chen PS, 2016 [39]

Taiwan

Cohort

Patients ≥ 18 years of age admitted for acute ischemic stroke or TIA

Hospital

Adherence

5354

Chen ST, 2019 [40]

Taiwan

Cohort

Patients aged 20–100, who were discharged from hospital for a new ASCVD episode, and initiated a statin within 90 days after hospital discharge

Hospital

Adherence and persistence

185,252

Chi MD, 2014 [41]

USA

Cross-sectional

Patients ≥ 18 years with a diagnosis of CAD

Outpatient and inpatient

Adherence

67,100

Choudhy NK, 2011 [42]

USA

RCT

Patients under 65 years of age with a diagnosis of AMI

Outpatient clinic

Adherence

5855

Chow CK, 2022 [43]

Australia

RCT

Patients with ACS, with mobile phone and reading ability

Outpatient clinic

Adherence

1424

Chung PW, 2018 [44]

South Korea

Cohort

Patients ≥ 20 years with a diagnosis of acute ischemic stroke or TIA

Hospital

Adherence

991

Coberley C, 2008 [45]

USA

Observational

Patients with CHD and/or HF enrolled in disease management programs

Outpatient clinic

Adherence

20,202

Colantonio LD, 2017 [46]

USA

Cohort

Patients > 66 years hospitalized for MI, prescribed statins within 30 days of discharge

Hospital

Adherence and persistence

57,888

Cooke CE, 2006 [47]

USA

Cohort

Patients with chronic arterial disease

Outpatient and inpatient

Adherence and persistence

2095

Di Martino M, 2016 [48]

Italy

Cohort

Patients hospitalized with incident myocardial infarction (MI)

Hospital

Adherence

9606

Fanaroff AC, 2020 [49]

USA

RCT

Adult patients hospitalized for AMI, treated with P2Y12 with medical insurance

Hospital

Adherence and persistence

5109

Fang R, 2015 [50]

China

RCT

Patients with CAD

Outpatient clinic

Adherence

280

Faridi KF, 2016 [51]

USA

Retrospective cohort study

Patients > 65 years, Medicare-insured, discharged alive after AMI (STEMI/NSTEMI)

Outpatient and inpatient

Adherence

20,976

Griffiths B, 2014 [52]

South Africa

Cross-sectional

Adults discharged alive after ACS from a tertiary hospital CCU

Outpatient clinic

Adherence

125

Ho PM, 2014 [53]

USA

RCT

Patients with ACS cared for in the VA system

Outpatient clinic

Adherence

253

Hoang C, 2011 [54]

USA

Cohort

Patients with acute coronary syndrome (ACS)

Hospital

Adherence

1081

Hudson M, 2006 [55]

Canada

Cohort

Patients hospitalized with a primary diagnosis of AMI

Hospital

Persistence

20,239

Huynh T, 2018 [56]

Canada

Cohort

Patients who experienced a STEAMI

Hospital

Adherence

524

Jia X, 2019 [57]

USA

Cohort

Patients with ASCVD

Outpatient clinic

Adherence

813,887

Khunti K, 2018 [58]

UK

Retrospective cohort study

Patients who received their first statin and/or ezetimibe prescription with documented CVD

Outpatient clinic

Adherence

16,701

Kirsch F, 2020 [59]

Germany

Observational

Patients with AMI

Outpatient and inpatient

Adherence

15,360

Kocas C, 2013 [60]

Turkey

RCT

Patients with stable coronary artery disease, hospitalized for catheterization

Hospital

Adherence

252

Korol S, 2022 [61]

Ukraine

Observational

Patients with STEMI from the STIMUL registry

Outpatient clinic

Persistence

Not reported

Kristiansen O, 2021 [62]

Norway

Cross-sectional

Patients aged 18–80 years experiencing a first or recurrent coronary event

Hospital

Adherence

373

Kulik A, 2011 [63]

USA

Cohort

Patients who were treated with statins after chronic coronary artery disease

Hospital

Adherence

13,130

Lee JK, 2007 [64]

USA

RCT

Patients ≥ 30 years of age with coronary heart disease

Outpatient clinic

Adherence

148

Liao YB, 2023 [65]

New Zealand

Cohort

Patients admitted with ACS, treated with an invasive strategy

Hospital

Adherence

19,942

Librero J, 2016 [66]

Spain

Cohort

Patients discharged after hospitalization for CHD

Hospital

Adherence

7462

Lip GYH, 2023 [67]

USA

Cohort

Patients aged 18–90 years with a diagnosis of MI and claims between 2016 and 2021

Not reported

Adherence

31,029a

Maddison R, 2021 [68]

New Zealand

RCT

Adults with recent ACS, clinically, stable and able to read

Hospital

Adherence

306

McGinnis BD, 2009 [69]

USA

Cohort

AMI patients who underwent CABG or PCI

Hospital

Adherence

2201

Mechtouff L, 2018 [70]

France

Observational

Patients ≥ 18 with stroke or TIA

Outpatient setting

Adherence and persistence

210

Navar AM, 2019 [71]

Multicenter (30 countries)

RCT

Patients hospitalized for ACS

Hospital

Persistence

17,706

Padilla López A, 2021 [72]

Spain

Cohort

Patients > 18 years old who had a first episode of STEACS

Hospital

Adherence

552

Park LG, 2014 [73]

USA

RCT

Patients > 21 years of age hospitalized for AMI with or without ST-segment elevation or PCI

Hospital

Adherence

90

Phan DQ, 2019 [74]

USA

Cohort

Patients > 80 years of age hospitalized with AMI (2006–2016)

Hospital

Adherence

5629

Pietrzykowski L, 2020 [75]

Poland

RCT

Adult patients hospitalized for AMI and treated with PCI

Inpatient, outpatient setting

Adherence and persistence

225

Qvist I, 2020 [76]

Denmark

RCT

Men aged 65–74 diagnosed with abdominal aortic aneurysm, peripheral arterial disease, or high blood pressure

Outpatient clinic

Adherence

1446

Rana JS, 2021 [77]

USA

Cohort

Patients aged 18–90 hospitalized for ASCVD (IM or ACV) with statin treatment

Hospital

Adherence

19,604

Rasmussen JN, 2007 [78]

Canada

Population-based, observational, longitudinal study

Patients (≥ 66 years) hospitalized with AMI between 1999 and 2003 who filled a prescription for a statin

Hospital

Adherence

17,823

Reddy A, 2016 [79]

USA

RCT

Veterans aged 30–75 years with CHD and poor adherence to statins (MPR < 80%)

Outpatient clinic

Adherence

126

Rodríguez F, 2019 [80]

USA

Cohort

Patients aged 18–85 years with established ASCVD

Outpatient clinic

Adherence

487,812

Schiele F, 2021 [81]

France

Retrospective cohort study

Patients with MI with an initial LLT prescription in 2011–2013 with no LLT prescription during the 2 years before LLT initiation

Outpatient clinic

Adherence

164,565

Schwalm JD, 2020 [82]

Canada

Quasi-experimental

Patients ≥ 65 who have suffered an AMI

Hospital

Adherence and persistence

20,896

Shalev V, 2014 [83]

Israel

Cohort

Patients had a diagnosis of AMI or vascular disease who initiated statin therapy between 1998 and 2008

Outpatient and inpatient setting

Persistence

15,139a

Shau WY, 2019 [84]

Taiwan

Cohort

Patients aged 20–100 years after hospitalization for ASCVD

Hospital

Adherence and persistence

185,252

Simonyi G, 2014 [85]

Hungary

Cross-sectional

Patients with atherosclerotic disease

Outpatient Clinic

Adherence and Persistence

1519

Sjölander M, 2016 [86]

Sweden

Cohort

Patients with ischemic stroke

Hospital

Adherence

15,192

Soldati S, 2021 [87]

Italy

Retrospective follow-up study

Patients discharged from hospitals between 2012 and 2016 with a diagnosis of AMI

Hospital

Adherence

25,779

Souza Groia Veloso R, 2021 [88]

Brazil

Cross-sectional

Patients ≥ 18 years, with a diagnosis of CHD

Outpatient clinic

Adherence

148

Stuart B, 2013 [89]

USA

Observational

Medicare beneficiaries post-AMI

Outpatient clinic

Adherence

8900

Thompson D, 2021 [90]

UK

RCT sub-study

Patients aged 18–85 years with stable angina

Outpatient clinic (telemedicine)

Adherence

200

Vethe NT, 2019 [91]

Norway

Observational

Patients with CVD

Hospital

Adherence

Method validation: 6; pilot study: 2

Vethe NT, 2022 [92]

Norway

Cross-sectional

Adult patients with CHD

Outpatient clinic

Adherence

18

Virani SS, 2014 [93]

USA

Cohort

Patients with ≥ 2 outpatient diagnosis codes or 1 inpatient diagnosis code for UA, MI, PCI, or coronary bypass

Outpatient clinic

Adherence

629,005

Vitturi BK, 2021 [94]

Brazil

Cohort

Patients > 18 years with a first ischemic stroke

Hospital

Adherence

344

Volpp KG, 2017 [95]

USA

RCT

Patients aged 18–80 years, survivors of AMI

Outpatient clinic

Adherence

1509

Wake M, 2019 [96]

Japan

Cohort

Patients > 18 years of age with type 2 diabetes or a previous diagnosis of ASCVD with a diagnosis of hyperlipidemia

Not reported

Adherence and persistence

18,457a

Wawruch M, 2017 [97]

Slovakia

Cohort

Persons > 18 years after first diagnosis of TIA

Not reported

Persistence

797

Wei L, 2002 [98]

UK

Cohort

Patients hospitalized for recurrent MI

Hospital

Adherence

5590

Xie G, 2017 [99]

China

Cohort

Patients with ACS with no relapse 6 months after HA

Hospital

Adherence

12,516

Xie G, 2022 [100]

China

Cohort

Patients with ACS hospitalized

Hospital

Persistence

10,337

Yaglioglu H, 2022 [101]

Turkey

Cohort

Patients with a diagnosis of UA, STEACS, or NSTEACS

Outpatient clinic

Adherence

180

Yan LL, 2021 [102]

China

RCT

Stroke patients

Outpatient clinic

Adherence

1299

Yao X, 2020 [103]

USA

Retrospective cohort

Adults with ASCVD (CHD, TIA, PAD)

Hospital

Adherence

284,954

Yu G, 2018 [104]

China

Cohort

Patients with CHD

Hospital

Adherence

615

  1. ACS acute coronary syndrome, AMI acute myocardial infarction, ANZACS-QI All New Zealand ACS Quality Improvement, ASCVD atherosclerotic cardiovascular disease, CA coronary angiography, CABG coronary artery bypass graft, CAD coronary artery disease, CHD coronary heart disease, CVD cardiovascular disease, HD hospital discharge, HF heart failure, LDL-C low-density lipoprotein cholesterol, MHS Maccabi Healthcare Services, MI myocardial infarction, MPR medication possession ratio, NSTEMI non-ST-segment elevation acute coronary syndrome (non-ST-segment elevation myocardial infarction), PAD peripheral artery disease, PCI percutaneous coronary intervention, RCT randomized clinical trial, STEMI ST-segment elevation acute coronary syndrome (ST-segment elevation myocardial infarction), TIA transient ischemic attack, UA unstable angina, VA Veterans Affairs Healthcare System
  2. aSub-cohort of patients in secondary cardiovascular prevention