Gap finder

Search review questions

Each row is one question a systematic review asked: who, what, compared with what, and which outcome, with the effect it found and how certain that is. Words match anywhere in the field.

Limit to evidence status or GRADE (optional)

1,518 questions in 135 reviews · Infectious Diseases

current versions
No studies 135 · 8.9%Ungraded 150 · 9.9%Very low 350 · 23.1%Low 420 · 27.7%Moderate 321 · 21.1%High 142 · 9.4%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

QuestionEffectEvidenceStatus / GRADE
Intervention NR
Peripheral health centre with a prior probability of disease of 40% · Patients suspected to have visceral leishmaniasis disease 1
Rapid tests for the diagnosis of visceral leishmaniasis in patients with suspected disease (2014) · Cochrane
no estimate extracted6 studies · 1468 participantsHigh
Intervention NR
Referral centre with a prior probability of disease of 60% · Patients suspected to have visceral leishmaniasis disease 1
Rapid tests for the diagnosis of visceral leishmaniasis in patients with suspected disease (2014) · Cochrane
no estimate extracted6 studies · 1468 participantsHigh
Intervention NR
CI: confidence interval · Patients suspected to have visceral leishmaniasis disease 1
Rapid tests for the diagnosis of visceral leishmaniasis in patients with suspected disease (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Peripheral health centre with a prior probability of disease of 40% · Patients suspected to have visceral leishmaniasis disease 1
Rapid tests for the diagnosis of visceral leishmaniasis in patients with suspected disease (2014) · Cochrane
no estimate extracted9 studies · 1692 participantsHigh
Intervention NR
Referral centre with a prior probability of disease of 60% · Patients suspected to have visceral leishmaniasis disease 1
Rapid tests for the diagnosis of visceral leishmaniasis in patients with suspected disease (2014) · Cochrane
no estimate extracted9 studies · 1692 participantsHigh
Intervention NR
CI: confidence interval · Patients suspected to have visceral leishmaniasis disease 1
Rapid tests for the diagnosis of visceral leishmaniasis in patients with suspected disease (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Peripheral health centre with a prior probability of disease of 40% · Patients suspected to have visceral leishmaniasis disease 1
Rapid tests for the diagnosis of visceral leishmaniasis in patients with suspected disease (2014) · Cochrane
no estimate extracted6 studies · 1374 participantsHigh
Intervention NR
Referral centre with a prior probability of disease of 60% · Patients suspected to have visceral leishmaniasis disease 1
Rapid tests for the diagnosis of visceral leishmaniasis in patients with suspected disease (2014) · Cochrane
no estimate extracted6 studies · 1374 participantsHigh
Intervention NR
CI: confidence interval · Patients suspected to have visceral leishmaniasis disease 1
Rapid tests for the diagnosis of visceral leishmaniasis in patients with suspected disease (2014) · Cochrane
no estimate extractedNRNo studies
Pre‐referral rectal artesunate vs placebo
All cause mortality · Children and adults with severe malaria
Pre‐referral rectal artesunate for severe malaria (2014) · Cochrane
RR 0.74 [0.59, 0.93]1 study · 8050 participantsModerate
Pre‐referral rectal artesunate vs placebo
Neurodisability · Children and adults with severe malaria
Pre‐referral rectal artesunate for severe malaria (2014) · Cochrane
RR 0.68 [0.35, 1.3]1 study · 17280 participantsLow
Dihydroartemisinin‐piperaquine vs Artemether‐lumefantrine
Treatment failure Day 28 · Patients with uncomplicated P. falciparum malaria
Dihydroartemisinin‐piperaquine for treating uncomplicated Plasmodium falciparum malaria (2014) · Cochrane
RR 0.34 [0.3, 0.39]9 studies · 6200 participantsHigh
Dihydroartemisinin‐piperaquine vs Artemether‐lumefantrine
Treatment failure Day 63 · Patients with uncomplicated P. falciparum malaria
Dihydroartemisinin‐piperaquine for treating uncomplicated Plasmodium falciparum malaria (2014) · Cochrane
RR 0.71 [0.65, 0.78]2 studies · 3200 participantsHigh
Intervention NR
All‐cause mortality · patients with managing pulmonary tuberculosis
Adjunctive steroid therapy for managing pulmonary tuberculosis (2014) · Cochrane
RR 0.77 [0.51, 1.15]18 studies · 3815 participantsLow
Intervention NR
Sputum Conversion by 2 months · patients with managing pulmonary tuberculosis
Adjunctive steroid therapy for managing pulmonary tuberculosis (2014) · Cochrane
RR 1.1 [1.03, 1.17]11 studies · 1475 participantsLow
Intervention NR
Sputum conversion at 6 months · patients with managing pulmonary tuberculosis
Adjunctive steroid therapy for managing pulmonary tuberculosis (2014) · Cochrane
RR 1.01 [0.97, 1.05]8 studies · 875 participantsModerate
Intervention NR
Clinical Improvement at 1 month · patients with managing pulmonary tuberculosis
Adjunctive steroid therapy for managing pulmonary tuberculosis (2014) · Cochrane
RR 1.16 [1.09, 1.24]5 studies · 497 participantsVery low
Intervention NR
Parasitological failure at 1 month · People with S. mansoni infection
Drugs for treating Schistosoma mansoni infection (2013) · Cochrane
RR 3.13 [1.03, 9.53]2 studies · 414 participantsModerate
Intervention NR
Parasitological failure at 1 month · People with S. mansoni infection
Drugs for treating Schistosoma mansoni infection (2013) · Cochrane
RR 8.74 [3.74, 20.43]2 studies · 82 participantsModerate
Oxamniquine 40 mg/kg vs praziquantel 40 mg/kg
Parasitological failure at 1 month · People with S. mansoni infection
Drugs for treating Schistosoma mansoni infection (2013) · Cochrane
RR 0.4 [0.13, 1.22]1 study · 33 participantsVery low
Artesunate (12 mg/kg) plus praziquantel (40 mg/kg) vs praziquantel (40 mg/kg) alone
Parasitological failure at 1 month · People with S. mansoni infection
Drugs for treating Schistosoma mansoni infection (2013) · Cochrane
RR 0.62 [0.35, 1.09]1 study · 75 participantsVery low
Primaquine five days vs 14 days
P. vivax parasitaemia detected > 30 days after starting primaquine · People with P. vivax malaria1
Primaquine for preventing relapse in people with Plasmodium vivax malaria treated with chloroquine (2013) · Cochrane
RR 10.05 [2.82, 35.86]2 studies · 186 participantsModerate
Primaquine (weekly for eight weeks) vs daily primaquine
P. vivax parasitaemia detected > 30 days after starting primaquine · Children and adults with blood smear positive P. vivax malaria1
Primaquine for preventing relapse in people with Plasmodium vivax malaria treated with chloroquine (2013) · Cochrane
RR 2.97 [0.34, 25.87]1 study · 129 participantsVery low
Primaquine (weekly for eight weeks) vs daily primaquine
Serious adverse events · Children and adults with blood smear positive P. vivax malaria1
Primaquine for preventing relapse in people with Plasmodium vivax malaria treated with chloroquine (2013) · Cochrane
no estimate extracted1 study · 129 participantsUngraded
Primaquine (weekly for eight weeks) vs daily primaquine
Adverse events · Children and adults with blood smear positive P. vivax malaria1
Primaquine for preventing relapse in people with Plasmodium vivax malaria treated with chloroquine (2013) · Cochrane
no estimate extracted1 study · 129 participantsUngraded
Intervention NR
P. vivax parasitaemia detected > 30 days after starting primaquine · People with P. vivax malaria1
Primaquine for preventing relapse in people with Plasmodium vivax malaria treated with chloroquine (2013) · Cochrane
RR 0.98 [0.73, 1.3]4 studies · 2213 participantsHigh
Intervention NR
Serious adverse events · People with P. vivax malaria1
Primaquine for preventing relapse in people with Plasmodium vivax malaria treated with chloroquine (2013) · Cochrane
no estimate extracted4 studies · 2213 participantsUngraded
Intervention NR
Other adverse events · People with P. vivax malaria1
Primaquine for preventing relapse in people with Plasmodium vivax malaria treated with chloroquine (2013) · Cochrane
no estimate extracted4 studies · 2213 participantsUngraded
Intervention NR
P. vivax parasitaemia detected > 30 days after starting primaquine · People with P. vivax malaria1
Primaquine for preventing relapse in people with Plasmodium vivax malaria treated with chloroquine (2013) · Cochrane
RR 0.6 [0.48, 0.75]10 studies · 1740 participantsHigh
Intervention NR
Serious adverse events · People with P. vivax malaria1
Primaquine for preventing relapse in people with Plasmodium vivax malaria treated with chloroquine (2013) · Cochrane
no estimate extracted10 studies · 1740 participantsUngraded
Intervention NR
Other adverse events · People with P. vivax malaria1
Primaquine for preventing relapse in people with Plasmodium vivax malaria treated with chloroquine (2013) · Cochrane
no estimate extracted10 studies · 1740 participantsUngraded
Primaquine five days vs 14 days
Serious adverse events · People with P. vivax malaria1
Primaquine for preventing relapse in people with Plasmodium vivax malaria treated with chloroquine (2013) · Cochrane
no estimate extracted2 studies · 186 participantsUngraded
Primaquine five days vs 14 days
Other adverse events · People with P. vivax malaria1
Primaquine for preventing relapse in people with Plasmodium vivax malaria treated with chloroquine (2013) · Cochrane
no estimate extracted2 studies · 186 participantsUngraded
Primaquine three days vs 14 days
P. vivax parasitaemia detected > 30 days after starting primaquine · People with P. vivax malaria1
Primaquine for preventing relapse in people with Plasmodium vivax malaria treated with chloroquine (2013) · Cochrane
RR 3.18 [2.1, 4.81]2 studies · 262 participantsModerate
Primaquine three days vs 14 days
Serious adverse events · People with P. vivax malaria1
Primaquine for preventing relapse in people with Plasmodium vivax malaria treated with chloroquine (2013) · Cochrane
no estimate extracted2 studies · 262 participantsUngraded
Primaquine three days vs 14 days
Other adverse events · People with P. vivax malaria1
Primaquine for preventing relapse in people with Plasmodium vivax malaria treated with chloroquine (2013) · Cochrane
no estimate extracted2 studies · 262 participantsUngraded
Primaquine seven days vs 14 days
P. vivax parasitaemia detected > 30 days after starting primaquine · People with P. vivax malaria1
Primaquine for preventing relapse in people with Plasmodium vivax malaria treated with chloroquine (2013) · Cochrane
RR 2.24 [1.24, 4.03]1 study · 126 participantsLow
Primaquine seven days vs 14 days
Severe adverse events · People with P. vivax malaria1
Primaquine for preventing relapse in people with Plasmodium vivax malaria treated with chloroquine (2013) · Cochrane
no estimate extracted1 study · 126 participantsUngraded
Primaquine seven days vs 14 days
Other adverse events · People with P. vivax malaria1
Primaquine for preventing relapse in people with Plasmodium vivax malaria treated with chloroquine (2013) · Cochrane
no estimate extracted1 study · 126 participantsUngraded
Fluoroquinolone plus standard regimen vs standard regimen alone
Treatment failure · Patients with presumed drug‐sensitive TB
Fluoroquinolones for treating tuberculosis (presumed drug‐sensitive) (2013) · Cochrane
no estimate extracted0 studies · 0 participantsUngraded
Fluoroquinolone substitution for ethambutol in a standard six month regimen vs standard regimen
Death from any cause · Patients with presumed drug‐sensitive TB
Fluoroquinolones for treating tuberculosis (presumed drug‐sensitive) (2013) · Cochrane
RR 0.52 [0.21, 1.32]3 studies · 723 participantsVery low
Fluoroquinolone substitution for ethambutol in a standard six month regimen vs standard regimen
TB‐related death · Patients with presumed drug‐sensitive TB
Fluoroquinolones for treating tuberculosis (presumed drug‐sensitive) (2013) · Cochrane
RR 0.33 [0.01, 8.07]1 study · 170 participantsVery low
Fluoroquinolone substitution for ethambutol in a standard six month regimen vs standard regimen
Sputum culture conversion at 8 weeks · Patients with presumed drug‐sensitive TB
Fluoroquinolones for treating tuberculosis (presumed drug‐sensitive) (2013) · Cochrane
RR 1.07 [0.97, 1.19]3 studies · 723 participantsVery low
Fluoroquinolone substitution for ethambutol in a standard six month regimen vs standard regimen
Serious adverse events · Patients with presumed drug‐sensitive TB
Fluoroquinolones for treating tuberculosis (presumed drug‐sensitive) (2013) · Cochrane
RR 0.93 [0.53, 1.62]3 studies · 723 participantsVery low
Fluoroquinolone substitution for ethambutol in a standard six month regimen vs standard regimen
One or more adverse events · Patients with presumed drug‐sensitive TB
Fluoroquinolones for treating tuberculosis (presumed drug‐sensitive) (2013) · Cochrane
no estimate extracted0 studies · 0 participantsUngraded
Fluoroquinolone substitution for isoniazid in a standard six month regimen vs standard regimen
Treatment failure · Patients with presumed drug‐sensitive TB
Fluoroquinolones for treating tuberculosis (presumed drug‐sensitive) (2013) · Cochrane
no estimate extracted0 studies · 0 participantsUngraded
Fluoroquinolone substitution for isoniazid in a standard six month regimen vs standard regimen
Relapse · Patients with presumed drug‐sensitive TB
Fluoroquinolones for treating tuberculosis (presumed drug‐sensitive) (2013) · Cochrane
no estimate extracted0 studies · 0 participantsUngraded
Fluoroquinolone substitution for isoniazid in a standard six month regimen vs standard regimen
Death from any cause · Patients with presumed drug‐sensitive TB
Fluoroquinolones for treating tuberculosis (presumed drug‐sensitive) (2013) · Cochrane
RR 0.75 [0.17, 3.3]1 study · 433 participantsLow
Fluoroquinolone substitution for isoniazid in a standard six month regimen vs standard regimen
TB‐related death · Patients with presumed drug‐sensitive TB
Fluoroquinolones for treating tuberculosis (presumed drug‐sensitive) (2013) · Cochrane
RR 2 [0.18, 21.84]1 study · 433 participantsLow
Fluoroquinolone substitution for isoniazid in a standard six month regimen vs standard regimen
Sputum culture conversion at 8 weeks · Patients with presumed drug‐sensitive TB
Fluoroquinolones for treating tuberculosis (presumed drug‐sensitive) (2013) · Cochrane
RR 1.1 [0.91, 1.33]1 study · 433 participantsLow