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)

780 questions in 55 reviews · Public Health

current versions
No studies 162 · 20.8%Ungraded 52 · 6.7%Very low 231 · 29.6%Low 191 · 24.5%Moderate 122 · 15.6%High 22 · 2.8%

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
Arnold 2009 · households
Interventions to improve water quality and supply, sanitation and hygiene practices, and their effects on… (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Bowen 2012 · households
Interventions to improve water quality and supply, sanitation and hygiene practices, and their effects on… (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Hasan 1989 · households
Interventions to improve water quality and supply, sanitation and hygiene practices, and their effects on… (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Self rated general health · working‐age adults
In‐work tax credits for families and their impact on health status in adults (2013) · Cochrane
no estimate extracted1 study · 127209 participantsVery low
Intervention NR
Smoking during pregnancy · working‐age adults
In‐work tax credits for families and their impact on health status in adults (2013) · Cochrane
OR 0.95 [0.94, 0.96]1 study · 5260202 participantsVery low
Intervention NR
Physical health · working‐age adults
In‐work tax credits for families and their impact on health status in adults (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Number of bad physical health days in past 30 days · working‐age adults
In‐work tax credits for families and their impact on health status in adults (2013) · Cochrane
RR 1.13 [0.95, 1.35]1 study · 127209 participantsVery low
Intervention NR
Number of risky biomarkers for inflammation, cardiovascular disease and metabolic disease · working‐age adults
In‐work tax credits for families and their impact on health status in adults (2013) · Cochrane
RR 0.81 [0.53, 1.23]1 study · 3090 participantsVery low
Intervention NR
Change in income Logged wages/salary · working‐age adults
In‐work tax credits for families and their impact on health status in adults (2013) · Cochrane
RR 0.32 [0.1, 0.53]1 study · 66542 participantsVery low
Intervention NR
Change in employment · working‐age adults
In‐work tax credits for families and their impact on health status in adults (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Currently employed · working‐age adults
In‐work tax credits for families and their impact on health status in adults (2013) · Cochrane
RD 0.02 [0.01, 0.04]1 study · 144477 participantsVery low
Intervention NR
Mental health/psychological distress Number of bad mental health days in past 30 days · working‐age adults
In‐work tax credits for families and their impact on health status in adults (2013) · Cochrane
RR 0.94 [0.81, 1.08]1 study · 127209 participantsVery low
Intervention NR
Mental illness · working‐age adults
In‐work tax credits for families and their impact on health status in adults (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Overweight/obesity · working‐age adults
In‐work tax credits for families and their impact on health status in adults (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Overweight · working‐age adults
In‐work tax credits for families and their impact on health status in adults (2013) · Cochrane
no estimate extracted1 study · 59756 participantsVery low
Intervention NR
Obesity · working‐age adults
In‐work tax credits for families and their impact on health status in adults (2013) · Cochrane
no estimate extracted1 study · 59756 participantsVery low
Intervention NR
Alcohol use · working‐age adults
In‐work tax credits for families and their impact on health status in adults (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Tobacco use · working‐age adults
In‐work tax credits for families and their impact on health status in adults (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Current smoking · working‐age adults
In‐work tax credits for families and their impact on health status in adults (2013) · Cochrane
no estimate extracted1 study · 173811 participantsVery low
Intervention NR
Communicable diseases · Slum dwellers
Slum upgrading strategies involving physical environment and infrastructure interventions and their effects… (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Crime and violence · Slum dwellers
Slum upgrading strategies involving physical environment and infrastructure interventions and their effects… (2013) · Cochrane
no estimate extracted893 participantsLow
Intervention NR
Social capital · Slum dwellers
Slum upgrading strategies involving physical environment and infrastructure interventions and their effects… (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Nutritional deficiencies · Slum dwellers
Slum upgrading strategies involving physical environment and infrastructure interventions and their effects… (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Non‐communicable diseases · Slum dwellers
Slum upgrading strategies involving physical environment and infrastructure interventions and their effects… (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Injuries · Slum dwellers
Slum upgrading strategies involving physical environment and infrastructure interventions and their effects… (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
General health measures · Slum dwellers
Slum upgrading strategies involving physical environment and infrastructure interventions and their effects… (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Quality of life · Slum dwellers
Slum upgrading strategies involving physical environment and infrastructure interventions and their effects… (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Financial Poverty · Slum dwellers
Slum upgrading strategies involving physical environment and infrastructure interventions and their effects… (2013) · Cochrane
no estimate extracted1130 participantsVery low
Intervention NR
Employment · Slum dwellers
Slum upgrading strategies involving physical environment and infrastructure interventions and their effects… (2013) · Cochrane
no estimate extracted1066 participantsLow
Intervention NR
Education · Slum dwellers
Slum upgrading strategies involving physical environment and infrastructure interventions and their effects… (2013) · Cochrane
no estimate extracted898 participantsLow