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
Severe ETEC diarrhoea · People travelling from non‐endemic settings
Vaccines for preventing enterotoxigenic Escherichia coli (ETEC) diarrhoea (2013) · Cochrane
no estimate extracted0 studies · 0 participantsUngraded
Intervention NR
All‐cause diarrhoea · People travelling from non‐endemic settings
Vaccines for preventing enterotoxigenic Escherichia coli (ETEC) diarrhoea (2013) · Cochrane
RR 1.04 [0.87, 1.24]1 study · 502 participantsLow
Intervention NR
Adverse events · People travelling from non‐endemic settings
Vaccines for preventing enterotoxigenic Escherichia coli (ETEC) diarrhoea (2013) · Cochrane
no estimate extracted1 study · 502 participantsUngraded
Antibiotics vs placebo or no treatment
Duration of diarrhoea (days) · patients symptomatic for NTS infection
Antimicrobials for treating symptomatic non‐typhoidal Salmonella infection (2012) · Cochrane
no estimate extracted4 studies · 202 participantsLow
Antibiotics vs placebo or no treatment
Duration of fever (days) · patients symptomatic for NTS infection
Antimicrobials for treating symptomatic non‐typhoidal Salmonella infection (2012) · Cochrane
no estimate extracted2 studies · 107 participantsVery low
Antibiotics vs placebo or no treatment
Duration of illness (days) · patients symptomatic for NTS infection
Antimicrobials for treating symptomatic non‐typhoidal Salmonella infection (2012) · Cochrane
no estimate extracted2 studies · 116 participantsVery low
Antibiotics vs placebo or no treatment
Clinical treatment failure (Persistent or worsening symptoms at the end of treatment) · patients symptomatic for NTS infection
Antimicrobials for treating symptomatic non‐typhoidal Salmonella infection (2012) · Cochrane
RR 0.88 [0.62, 1.25]7 studies · 440 participantsVery low
Antibiotics vs placebo or no treatment
Presence of diarrhoea at 2‐4 days · patients symptomatic for NTS infection
Antimicrobials for treating symptomatic non‐typhoidal Salmonella infection (2012) · Cochrane
RR 1.75 [0.42, 7.21]1 study · 46 participantsVery low
Antibiotics vs placebo or no treatment
Presence of diarrhoea at 5‐7 days · patients symptomatic for NTS infection
Antimicrobials for treating symptomatic non‐typhoidal Salmonella infection (2012) · Cochrane
RR 0.83 [0.62, 1.12]2 studies · 192 participantsVery low
Antipyretic drugs vs no antipyretic drug or placebo
FCT · patients with fever in malaria
Antipyretic measures for treating fever in malaria (2012) · Cochrane
no estimate extracted2 studies · 59 participantsVery low
Antipyretic drugs vs no antipyretic drug or placebo
PCT · patients with fever in malaria
Antipyretic measures for treating fever in malaria (2012) · Cochrane
no estimate extracted2 studies · 59 participantsVery low
Antipyretic drugs vs no antipyretic drug or placebo
Adverse Events · patients with fever in malaria
Antipyretic measures for treating fever in malaria (2012) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Clinical malaria · Children aged less than 5 years
Intermittent preventive treatment for malaria in children living in areas with seasonal transmission (2012) · Cochrane
Rate Ratio 0.26 [0.17, 0.38]6 studies · 9321 participantsHigh
Intervention NR
Severe malaria · Children aged less than 5 years
Intermittent preventive treatment for malaria in children living in areas with seasonal transmission (2012) · Cochrane
Rate Ratio 0.27 [0.1, 0.76]2 studies · 5964 participantsHigh
Intervention NR
Death from any cause · Children aged less than 5 years
Intermittent preventive treatment for malaria in children living in areas with seasonal transmission (2012) · Cochrane
Risk Ratio 0.66 [0.31, 1.39]6 studies · 9533 participantsModerate
Intervention NR
Moderately severe anaemia · Children aged less than 5 years
Intermittent preventive treatment for malaria in children living in areas with seasonal transmission (2012) · Cochrane
Risk Ratio 0.71 [0.52, 0.98]5 studies · 8805 participantsModerate
Intervention NR
Serious drug related adverse events · Children aged less than 5 years
Intermittent preventive treatment for malaria in children living in areas with seasonal transmission (2012) · Cochrane
no estimate extracted6 studies · 9533 participantsModerate
Intervention NR
Non‐serious adverse events · Children aged less than 5 years
Intermittent preventive treatment for malaria in children living in areas with seasonal transmission (2012) · Cochrane
no estimate extracted6 studies · 9533 participantsModerate
Intervention NR
Death · Children with severe malaria
Artesunate versus quinine for treating severe malaria (2012) · Cochrane
RR 0.76 [0.65, 0.9]4 studies · 5765 participantsHigh
Intervention NR
Hypoglycaemia episodes · Adults with severe malaria
Artesunate versus quinine for treating severe malaria (2012) · Cochrane
RR 0.36 [0.19, 0.68]2 studies · 1372 participantsHigh
Intervention NR
Neurological sequelae at day 28 · Children with severe malaria
Artesunate versus quinine for treating severe malaria (2012) · Cochrane
RR 1.23 [0.74, 2.03]1 study · 4857 participantsModerate
Intervention NR
Neurological sequelae at discharge · Children with severe malaria
Artesunate versus quinine for treating severe malaria (2012) · Cochrane
RR 1.36 [1.01, 1.83]3 studies · 5163 participantsModerate
Intervention NR
Time to hospital discharge (days) · Children with severe malaria
Artesunate versus quinine for treating severe malaria (2012) · Cochrane
no estimate extracted3 studies · 113 participantsModerate
Intervention NR
Hypoglycaemia episodes · Children with severe malaria
Artesunate versus quinine for treating severe malaria (2012) · Cochrane
RR 0.62 [0.45, 0.87]4 studies · 5765 participantsHigh
Intervention NR
Death · Adults with severe malaria
Artesunate versus quinine for treating severe malaria (2012) · Cochrane
RR 0.61 [0.5, 0.75]5 studies · 1664 participantsHigh
Intervention NR
Neurological sequelae at day 28 · Adults with severe malaria
Artesunate versus quinine for treating severe malaria (2012) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Neurological sequelae at discharge · Adults with severe malaria
Artesunate versus quinine for treating severe malaria (2012) · Cochrane
RR 2.97 [0.6, 14.64]1 study · 1259 participantsModerate
Intervention NR
Time to hospital discharge (days) · Adults with severe malaria
Artesunate versus quinine for treating severe malaria (2012) · Cochrane
no estimate extracted2 studies · 113 participantsModerate
Intervention NR
Completion of treatment · People with latent tuberculosis
Patient education and counselling for promoting adherence to treatment for tuberculosis (2012) · Cochrane
no estimate extracted3 studies · 923 participantsLow
Intervention NR
Incidence of active tuberculosis · People with latent tuberculosis
Patient education and counselling for promoting adherence to treatment for tuberculosis (2012) · Cochrane
no estimate extracted0 studies · 0 participantsUngraded
Doxycycline+Rifampicin vs Doxycycline+Streptomycin
total treatment failure · patients with human Brucellosis
Antibiotics for treating human brucellosis (2012) · Cochrane
RR 1.91 [1.07, 3.42]7 studies · 567 participantsModerate
Doxycycline+Rifampicin vs Doxycycline+Streptomycin
Minor adverse drug reactions · patients with human Brucellosis
Antibiotics for treating human brucellosis (2012) · Cochrane
RR 1.38 [0.99, 1.92]5 studies · 473 participantsLow
Doxycycline+Rifampicin vs Quinolones+Rifampicin
total treatment failure · patients with human Brucellosis
Antibiotics for treating human brucellosis (2012) · Cochrane
OR 0.94 [0.45, 1.98]3 studies · 181 participantsModerate
Doxycycline+Rifampicin vs Quinolones+Rifampicin
Minor adverse drug reactions · patients with human Brucellosis
Antibiotics for treating human brucellosis (2012) · Cochrane
RR 1.8 [0.78, 4.18]4 studies · 296 participantsLow
Doxycycline+Streptomycin vs Doxycycline+Gentamycin
total treatment failure · patients with human Brucellosis
Antibiotics for treating human brucellosis (2012) · Cochrane
OR 1.85 [0.84, 4.08]2 studies · 345 participantsLow
Doxycycline+Streptomycin vs Doxycycline+Gentamycin
Minor adverse drug reactions · patients with human Brucellosis
Antibiotics for treating human brucellosis (2012) · Cochrane
RR 0.85 [0.6, 1.22]2 studies · 345 participantsVery low
Intervention NR
Parasitological cure ( · People with giardiasis infection
Drugs for treating giardiasis (2012) · Cochrane
RR 0.99 [0.95, 1.03]10 studies · 932 participantsModerate
Intervention NR
Parasitological cure ( · People with giardiasis infection
Drugs for treating giardiasis (2012) · Cochrane
RR 1.23 [0.87, 1.73]3 studies · 179 participantsVery low
Intervention NR
Clinical improvement ( · People with giardiasis infection
Drugs for treating giardiasis (2012) · Cochrane
RR 1.15 [1, 1.32]3 studies · 179 participantsVery low
Intervention NR
Gastrointestinal side effects ( · People with giardiasis infection
Drugs for treating giardiasis (2012) · Cochrane
RR 0.58 [0.21, 1.62]3 studies · 179 participantsVery low
Intervention NR
Neurological side effects ( · People with giardiasis infection
Drugs for treating giardiasis (2012) · Cochrane
RR 1.3 [0.29, 5.92]2 studies · 138 participantsVery low
Intervention NR
Serious adverse events · People with giardiasis infection
Drugs for treating giardiasis (2012) · Cochrane
no estimate extracted3 studies · 179 participantsUngraded
Intervention NR
Clinical improvement ( · People with giardiasis infection
Drugs for treating giardiasis (2012) · Cochrane
RR 0.98 [0.93, 1.04]5 studies · 483 participantsModerate
Intervention NR
Gastrointestinal side effects ( · People with giardiasis infection
Drugs for treating giardiasis (2012) · Cochrane
RR 0.29 [0.13, 0.63]8 studies · 717 participantsModerate
Intervention NR
Neurological side effects ( · People with giardiasis infection
Drugs for treating giardiasis (2012) · Cochrane
RR 0.34 [0.18, 0.64]5 studies · 453 participantsLow
Intervention NR
Parasitological cure ( · People with giardiasis infection
Drugs for treating giardiasis (2012) · Cochrane
RR 0.58 [0.32, 1.06]5 studies · 142 participantsVery low
Intervention NR
Clinical improvement · People with giardiasis infection
Drugs for treating giardiasis (2012) · Cochrane
no estimate extracted0 studies · 0 participantsUngraded
Intervention NR
Side effects: nausea/vomiting · People with giardiasis infection
Drugs for treating giardiasis (2012) · Cochrane
RR 0.32 [0.05, 1.9]3 studies · 100 participantsVery low
Intervention NR
Side effects: headache · People with giardiasis infection
Drugs for treating giardiasis (2012) · Cochrane
RR 0.24 [0.03, 2.06]2 studies · 74 participantsVery low
Intervention NR
Serious adverse events · People with giardiasis infection
Drugs for treating giardiasis (2012) · Cochrane
no estimate extracted5 studies · 142 participantsUngraded