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Table 1 Study characteristics of published literature on the impact of compliance on health outcome and health-related quality of life on thalassaemia patients

From: The impact of chelation compliance in health outcome and health related quality of life in thalassaemia patients: a systematic review

Author, Year

Country

Sample size

Centre

Study Design

Iron Chelation Therapy

Duration

Wolfe et al. 1985 [33]

United States

36

Multi

Prospective cohort

DFO

6 years

Al-Refaie et al. 1992 [17]

United Kingdom

52

N/A

Cross sectional

DFO

N/A

Richardson et al. 1993 [34]

Australia

76

Single

Retrospective cohort

DFO

N/A

Arboretti et al. 2001 [18]

Italy

867

Multi

Cross sectional

DFO

Period 1: 5 months

Period 2: 6 months

Kidson-Gerber et al. 2008 [19]

Australia

44

Single

Phase 1: Cross sectional

Phase 2: Retrospective

DFO (n = 43), DFP (n = 18), DFO & DFP (n = 17)

1 year

Lee et al. 2011 [20]

Malaysia

139

Single

Cross sectional

DFO

1 year

Haghpanah et al. 2013 [21]

Iran

101

Single

Cross sectional

DFO

N/A (2009)

Mokhtar et al. 2013 [35]

Egypt

447

Single

Retrospective cohort

DFO (n = 99), DFP (n = 119), DFX (n = 21) and DFO& DFP (n = 208)

N/A

Haghpanah et al. 2014 [22]

Iran

220

Single

Cross sectional

DFO (n = 114), DFX (n = 106)

N/A (2012)

Elalfy et al. 2014 [36]

Egypt

96

Multi

Prospective randomized controlled trial

Group A: DFO & DFP (n = 48)

Group B: DFP & DFX (n = 48)

1 year

Sobota et al. 2014 [23]

US, Canada, and the UK

264

Multi

Cross sectional

DFO (n = 57), DFP (n = 136), DFX (n = 9), DFO & DFP (n = 21) and DFO & DFX (n = 17), patients with no chelation (n = 22)

Patients on no chelation were excluded from some analyses that focused on chelator choice.

N/A

Bazi et al. 2017 [24]

Iran

80

Single

Cross sectional

N/A

Monotherapy (n = 62) and combinational regimen (n = 18)

N/A

Sobhani et al. 2019 [25]

Iran

90

Single

Cross sectional

DFO (n = 52), DFX (n = 29), DFO & DFX (n = 9)

1 year

Yassouf et al. 2019 [26]

Syria

82

Single

Cross sectional

DFO

3 months

Sukhmani et al. 2020 [27]

India

215

Single

Cross sectional

DFO, DFP, DFX and combination therapy

57.2% of patients (n = 123) were on monotherapy and 42.7% of patients (n = 92) on combinational therapy of two or more iron chelators.

N/A

Theppornpitak et al. 2021 [28]

Thailand

70

Single

Prospective cross sectional

DFP (n = 49), DFX (n = 14), DFO (n = 2)

5 months

Badur et al. 2021 [32]

Turkey

27

Single

Prospective cross sectional

N/A

N/A

Mahmoud et al. 2021 [29]

Egypt

120

Single

Cross sectional

DFX, DFO or both

2 years

Chai et al. 2021 [30]

Malaysia

198

Multi

Prospective cross sectional

DFO (n = 32), DFP (n = 60), DFX (n = 73), DFO & DFP (n = 20), DFO & DFX (n = 13)

1 year

Lam et al. 2021 [31]

Singapore

73

Multi

Ambidirectional cross sectional study

Retrospective reviews of clinical information and prospective interview patients/caregivers for socioeconomic data and compliance

38.2% of subjects were on monotherapy with DFX, 17.6% on DFP, 8.8% on DFO and 35.3% were on combination therapy.

2.5 years

  1. Abbreviations and Footnotes: DFO = desferrioxamine ; DFP = deferiprone; DFX = deferasirox; N/A = not available