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Table 2 Assessment of risk of bias of studies included in the meta-analysis

From: Safety and effectiveness of antimalarial therapy in sickle cell disease: a systematic review and network meta-analysis

Author details

Study site

Drug regimen

Allocation sequence

Allocation concealment

Blinding

No evidence of incomplete outcome data recording

No evidence of selective outcome recording

Olaosebikan et al., 2015

Kwara state, Nigeria

MQAS

SPAQ

PG

Yes

Yes

(Open-label)

Laboratory staff were unaware of treatment allocation

MQAS (2 withdrew consent, 3 moved away, 12 lost and 4 deaths)

SPAQ (1 withdrew consent, 2 moved away and 12 lost)

PG (1 moved away, 26 lost and 3 deaths)

Yes b

Diop et al., 2010

Dakar, Senegal

PL

SP

Yes

Yes

Open-label

Yesa

Yes b

Nakibuuka et al., 2009

Kampala, Uganda

SP

CQ

Yes

Yes

Double-blind

SP (7 lost to follow up)

CQ (8 lost to follow up)

Yes b

Eke et al., 2003

Port Harcourt, Nigeria

PL

PM

PG

Yes

Yes

Open-label

Yesa

Yes b

Nwokolo et al., 2001

Multicenter, Nigeria

PG

MQ

Yes

Yes

Open-label

Yesa

Yes b

Warley et al., 1965

Kampala, Uganda

PL

CQ + benzathine penicillin

Yes

Yes

Not provided

Yesa

No (dactylitis and Haemoglobin)

  1. CQ = Chloroquine, MQ = Mefloquine, MQAS = Mefloquine-artesunate, PL = Placebo, PG = Proguanil, SP=Sulfadoxine-pyrimethamine, SPAQ = Sulfadoxine pyrimethamine-amodiaquine
  2. aYes indicates that there is no evidence of incomplete outcome data recording
  3. b Yes indicates that there is no evidence of selective outcome recording