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)

612 questions in 46 reviews · Work

current versions
No studies 78 · 12.7%Ungraded 4 · 0.7%Very low 295 · 48.2%Low 182 · 29.7%Moderate 49 · 8%High 4 · 0.7%

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
Cognitive rehabilitation vs conventional treatment
Quality of life Perceived Quality of Life scale. Scores range from 10 to 100, higher scores indicate better quality of life. · people with traumatic brain injury
Cognitive rehabilitation for adults with traumatic brain injury to improve occupational outcomes (2017) · Cochrane
no estimate extracted1 study · 68 participantsModerate
Hospital‐based cognitive rehabilitation vs home programme
Return to work Return to work status · active duty military personnel within 3 months of moderate‐to‐severe traumatic brain injury
Cognitive rehabilitation for adults with traumatic brain injury to improve occupational outcomes (2017) · Cochrane
RR 0.95 [0.85, 1.05]1 study · 120 participantsModerate
Cognitive didactic therapy vs functional experiential therapy
Return to work Return to work status · adult veterans or active duty military service personnel with moderate‐to‐severe traumatic brain injury
Cognitive rehabilitation for adults with traumatic brain injury to improve occupational outcomes (2017) · Cochrane
RR 1.1 [0.83, 1.46]1 study · 366 participantsModerate
(RCT) Safe blood collection systems vs regular systems
Needlestick injuries immediate · preventing percutaneous exposure injuries caused by needles in healthcare personnel (RCTs)
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
RR 0.2 [0.01, 4.15]1 study · 550 participantsVery low
(ITS) Safe intravenous systems vs regular systems
Number of reported sharps injuries, level · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
no estimate extracted2 studies · 2 participantsVery low
(ITS) Safe intravenous systems vs regular systems
Number of reported sharps injuries, slope · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
no estimate extracted2 studies · 2 participantsVery low
(RCT) Safe injection systems vs regular systems RCT
Questionnaire reported Needlestick injuries 6 mo · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
RR 0.42 [0.14, 1.25]1 study · 154 participantsVery low
(RCT) Safe injection systems vs regular systems RCT
Questionnaire reported Needlestick injuries 12 mo · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
OR 0.2 [0.04, 0.96]1 study · 144 participantsVery low
(RCT) Safe injection systems vs regular systems RCT
Hospital reported Needlestick injuries 6 mo · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
OR 1.2 [0.51, 2.84]1 study · 533 participantsVery low
(RCT) Safe injection systems vs regular systems RCT
Hospital reported Needlestick injuries 12 mo · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
OR 0.72 [0.28, 1.81]1 study · 533 participantsVery low
(CBA) Safe injection systems vs regular systems
Needlestick injury rate · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
Rate ratio 0.34 [0.04, 3.28]1 study · 1 participantsVery low
(ITS) Safe passive injection systems vs safe active injection systems
Change in level of needlestick injuries · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
no estimate extracted1 study · 1 participantsVery low
(ITS) Safe passive injection systems vs safe active injection systems
Change in slope of needlestick injuries · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
no estimate extracted1 study · 1 participantsLow
(ITS) Multiple safe devices vs regular devices
Number of reported sharps injuries, level · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
no estimate extracted2 studies · 2 participantsVery low
(RCT) Safe blood collection systems vs regular systems
Blood splashes · preventing percutaneous exposure injuries caused by needles in healthcare personnel (RCTs)
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
RR 0.14 [0.02, 1.15]1 study · 550 participantsVery low
(ITS) Multiple safe devices vs regular devices
Number of reported sharps injuries, slope · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
no estimate extracted2 studies · 2 participantsVery low
(CBA) Multiple safe devices vs regular devices
Needle stick injuries · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
Rate ratio 0.11 [0.01, 0.81]1 study · 1 participantsVery low
(ITS) Sharps containers vs no containers
Number of reported sharps injuries, level · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
no estimate extracted2 studies · 2 participantsVery low
(ITS) Sharps containers vs no containers
Number of reported sharps injuries, slope · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
no estimate extracted2 studies · 2 participantsVery low
(CBA) Sharps containers vs no containers
Number of needlestick injuries · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
Rate ratio 0.88 [0.78, 0.99]1 study · 1 participantsVery low
(CBA) Sharps containers vs no containers
Number of container related needlestick injuries · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
Rate ratio 0.22 [0.11, 0.41]1 study · 1 participantsVery low
(ITS) Legislation vs no legislation
NSI‐ change in level ‐ Interruption · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
no estimate extracted2 studies · 2 participantsModerate
(ITS) Legislation vs no legislation
NSI‐ change in level ‐ Gradual introduction · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
no estimate extracted1 study · 1 participantsLow
(ITS) Legislation vs no legislation
NSI‐ Change in slope ‐ Interruption · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
no estimate extracted2 studies · 2 participantsVery low
(ITS) Legislation vs no legislation
NSI‐ Change in slope ‐ Gradual introduction · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
no estimate extracted1 study · 1 participantsLow
(ITS) Safe blood collection systems vs regular systems
Number of reported sharps injuries, level ‐ reported seperately for needle sheath and cap shield studies · preventing percutaneous exposure injuries caused by needles in healthcare personnel (ITS)
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
no estimate extracted2 studies · 2 participantsVery low
(ITS) Safe blood collection systems vs regular systems
Number of reported sharps injuries, slope ‐ reported seperately for needle sheath and cap shield studies · preventing percutaneous exposure injuries caused by needles in healthcare personnel (ITS)
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
no estimate extracted2 studies · 2 participantsVery low
(RCT) Safe intravenous systems vs regular systems
Needlestick injuries · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
Rate ratio 0.62 [0.27, 1.41]1 study · 1 participantsVery low
(RCT) Safe intravenous systems vs regular systems
Incidences of blood contamination ‐ Active systems · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
RR 1.6 [1.08, 2.36]4 studies · 961 participantsLow
(RCT) Safe intravenous systems vs regular systems
Incidences of blood contamination ‐ Passive systems · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
RR 0.94 [0.5, 1.75]2 studies · 528 participantsLow
(RCT) Safe intravenous systems vs regular systems
Incidence of blood leakage ‐ Active systems · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
RR 0.21 [0.11, 0.37]1 study · 147 participantsLow
(CBA) Safe intravenous systems vs regular systems
Number of needlestick injuries · preventing percutaneous exposure injuries caused by needles in healthcare personnel
Devices for preventing percutaneous exposure injuries caused by needles in healthcare personnel (2017) · Cochrane
Rate ratio 0.06 [0, 1.09]1 study · 1 participantsVery low
Organisational level workplace culture intervention vs no intervention
Self‐reported workplace civility, on a scale of 1 to 5; higher score more civility · Employees
Interventions for prevention of bullying in the workplace (2017) · Cochrane
no estimate extracted2 studies · 2969 participantsVery low
Individual level cognitive behavioural intervention vs no intervention
Self‐reported victimisation. Post intervention. · Adult workers with a learning disability
Interventions for prevention of bullying in the workplace (2017) · Cochrane
RR 0.55 [0.24, 1.25]1 study · 60 participantsVery low
Individual level cognitive behavioural intervention vs no intervention
Self‐reported victimisation. Three‐month · Adult workers with a learning disability
Interventions for prevention of bullying in the workplace (2017) · Cochrane
RR 0.49 [0.21, 1.15]1 study · 60 participantsVery low
Individual level cognitive behavioural intervention vs no intervention
Self‐reported perpetration. Post intervention. · Adult workers with a learning disability
Interventions for prevention of bullying in the workplace (2017) · Cochrane
RR 0.64 [0.27, 1.54]1 study · 60 participantsVery low
Individual level cognitive behavioural intervention vs no intervention
Self‐reported perpetration. Three‐month · Adult workers with a learning disability
Interventions for prevention of bullying in the workplace (2017) · Cochrane
RR 0.69 [0.26, 1.81]1 study · 60 participantsVery low
Organisational level workplace culture intervention vs no intervention
Self‐reported co‐worker incivility, on a scale of 0 to 6; higher score more frequent incivility · Employees
Interventions for prevention of bullying in the workplace (2017) · Cochrane
no estimate extracted1 study · 907 participantsVery low
Organisational level workplace culture intervention vs no intervention
Self‐reported supervisor incivility, on a scale of 0 to 6; higher score more frequent incivility · Employees
Interventions for prevention of bullying in the workplace (2017) · Cochrane
no estimate extracted1 study · 907 participantsVery low
Organisational level workplace culture intervention vs no intervention
Self‐reported frequency of incivility instigation, on a scale of 0 (never) ‐ 6 (daily) **; higher score more frequent incivility · Employees
Interventions for prevention of bullying in the workplace (2017) · Cochrane
no estimate extracted1 study · 907 participantsVery low
Organisational level workplace culture intervention vs no intervention
Self‐reported days of absenteeism in previous month. · Employees
Interventions for prevention of bullying in the workplace (2017) · Cochrane
no estimate extracted1 study · 907 participantsVery low
Multilevel educational intervention vs no intervention
Bullying · employees
Interventions for prevention of bullying in the workplace (2017) · Cochrane
no estimate extracted1 study · 1041 participantsVery low
Multilevel educational intervention vs no intervention
Absenteeism · employees
Interventions for prevention of bullying in the workplace (2017) · Cochrane
no estimate extracted1 study · 1041 participantsVery low
Individual level expressive‐writing vs control‐writing
Self‐reported frequency of incivility victimisation. · employees
Interventions for prevention of bullying in the workplace (2017) · Cochrane
no estimate extracted1 study · 46 participantsVery low
Individual level expressive‐writing vs control‐writing
Self‐reported frequency of incivility perpetration. · employees
Interventions for prevention of bullying in the workplace (2017) · Cochrane
no estimate extracted1 study · 46 participantsVery low
Return to work coordination programmes vs usual practice
Time to return to work ‐ short‐term · workers on sick leave
Return‐to‐work coordination programmes for improving return to work in workers on sick leave (2017) · Cochrane
HR 1.32 [0.93, 1.88]2 studies · 161 participantsLow
Return to work coordination programmes vs usual practice
Proportion who had ever returned to work ‐ short‐term · workers on sick leave
Return‐to‐work coordination programmes for improving return to work in workers on sick leave (2017) · Cochrane
RR 0.87 [0.63, 1.19]4 studies · 675 participantsVery low
Return to work coordination programmes vs usual practice
Proportion who had ever returned to work ‐ long‐term · workers on sick leave
Return‐to‐work coordination programmes for improving return to work in workers on sick leave (2017) · Cochrane
RR 1.03 [0.97, 1.09]8 studies · 3822 participantsModerate
Return to work coordination programmes vs usual practice
Proportion who had ever returned to work ‐ very long‐term · workers on sick leave
Return‐to‐work coordination programmes for improving return to work in workers on sick leave (2017) · Cochrane
RR 0.95 [0.88, 1.02]3 studies · 938 participantsLow
Return to work coordination programmes vs usual practice
Time to return to work ‐ long‐term · workers on sick leave
Return‐to‐work coordination programmes for improving return to work in workers on sick leave (2017) · Cochrane
HR 1.25 [0.95, 1.66]6 studies · 1935 participantsLow