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)

729 questions in 45 reviews · Consumers and Communication

current versions
No studies 188 · 25.8%Ungraded 93 · 12.8%Very low 155 · 21.3%Low 189 · 25.9%Moderate 90 · 12.3%High 14 · 1.9%

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
Decision aids for informed consent vs standard informed consent
Knowledge Quality of Informed Consent (QuIC) · people considering taking part in clinical trials
Decision aids for people considering taking part in clinical trials (2015) · Cochrane
no estimate extracted2 studies · 146 participantsVery low
Decision aids for informed consent vs standard informed consent
Accurate risk perception · people considering taking part in clinical trials
Decision aids for people considering taking part in clinical trials (2015) · Cochrane
no estimate extractedNRNo studies
Decision aids for informed consent vs standard informed consent
Values based decision · people considering taking part in clinical trials
Decision aids for people considering taking part in clinical trials (2015) · Cochrane
no estimate extractedNRNo studies
Decision aids for informed consent vs standard informed consent
Recognition that a decision needs to be made · people considering taking part in clinical trials
Decision aids for people considering taking part in clinical trials (2015) · Cochrane
no estimate extractedNRNo studies
Decision aids for informed consent vs standard informed consent
Involvement in decision · people considering taking part in clinical trials
Decision aids for people considering taking part in clinical trials (2015) · Cochrane
no estimate extractedNRNo studies
Decision aids for informed consent vs standard informed consent
Decisional conflict Decision Conflict Scale · people considering taking part in clinical trials
Decision aids for people considering taking part in clinical trials (2015) · Cochrane
no estimate extracted2 studies · 146 participantsVery low
Decision aids for informed consent vs standard informed consent
Decisional regret Decision Regret Scale · people considering taking part in clinical trials
Decision aids for people considering taking part in clinical trials (2015) · Cochrane
no estimate extracted2 studies · 119 participantsVery low
Intervention NR
Physical health: blood glucose (HbA1c) · Adult patients with long‐term health conditions
Personalised care planning for adults with chronic or long‐term health conditions (2015) · Cochrane
no estimate extracted9 studies · 1916 participantsModerate
Intervention NR
Physical health: systolic blood pressure · Adult patients with long‐term health conditions
Personalised care planning for adults with chronic or long‐term health conditions (2015) · Cochrane
no estimate extracted6 studies · 1200 participantsModerate
Intervention NR
Physical health: cholesterol (LDL‐C) · Adult patients with long‐term health conditions
Personalised care planning for adults with chronic or long‐term health conditions (2015) · Cochrane
no estimate extracted5 studies · 1545 participantsModerate
Intervention NR
Psychological health: depression (PHQ‐9, SCL‐20, Beck Depression Inventory, CES‐D) · Adult patients with long‐term health conditions
Personalised care planning for adults with chronic or long‐term health conditions (2015) · Cochrane
no estimate extracted5 studies · 599 participantsModerate
Intervention NR
Subjective health status: condition‐specific (PAID‐2, Illness Intrusiveness, AQLQ) · Adult patients with long‐term health conditions
Personalised care planning for adults with chronic or long‐term health conditions (2015) · Cochrane
no estimate extracted4 studies · 1330 participantsModerate
Intervention NR
Self‐management capabilities: self efficacy (Stanford, SUPPH, PCDS) · Adult patients with long‐term health conditions
Personalised care planning for adults with chronic or long‐term health conditions (2015) · Cochrane
no estimate extracted5 studies · 471 participantsModerate
Intervention NR
Harms associated with personalised care planning · Adult patients with long‐term health conditions
Personalised care planning for adults with chronic or long‐term health conditions (2015) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Knowledge (Single intervention) [mean number of correct questionnaire responses, assessed immediately post‐intervention] · People with a health condition or nominally 'well' considering real clinical trial participation (across a range of…
Audio‐visual presentation of information for informed consent for participation in clinical trials (2014) · Cochrane
no estimate extracted1 study · 155 participantsVery low
Intervention NR
Knowledge ‐ continuous [mean number of correct questionnaire responses, measured immediately post‐intervention] · people with a health condition (or pregnant) considering real clinical trial participation (across a range of topic…
Audio‐visual presentation of information for informed consent for participation in clinical trials (2014) · Cochrane
no estimate extracted2 studies · 143 participantsLow
Intervention NR
Knowledge ‐ dichotomous [> 80% of knowledge questions correct, measured immediately post‐intervention] · people with a health condition (or pregnant) considering real clinical trial participation (across a range of topic…
Audio‐visual presentation of information for informed consent for participation in clinical trials (2014) · Cochrane
no estimate extracted2 studies · 290 participantsLow
Intervention NR
Satisfaction with the information provided · people with a health condition (or pregnant) considering real clinical trial participation (across a range of topic…
Audio‐visual presentation of information for informed consent for participation in clinical trials (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Rate of participation [case notes or questionnaire, measured immediately or up to four weeks post‐intervention] · people with a health condition (or pregnant) considering real clinical trial participation (across a range of topic…
Audio‐visual presentation of information for informed consent for participation in clinical trials (2014) · Cochrane
no estimate extracted2 studies · 258 participantsLow
Intervention NR
Anxiety (or other psychological stress) [Spielberger State and Trait Anxiety score, measured immediately post‐intervention] · people with a health condition (or pregnant) considering real clinical trial participation (across a range of topic…
Audio‐visual presentation of information for informed consent for participation in clinical trials (2014) · Cochrane
no estimate extracted1 study · 142 participantsLow
Intervention NR
Retention of knowledge [> 80% of knowledge questions correct, measured two to four weeks post‐intervention] · people with a health condition (or pregnant) considering real clinical trial participation (across a range of topic…
Audio‐visual presentation of information for informed consent for participation in clinical trials (2014) · Cochrane
RR 1.38 [1.07, 1.77]1 study · 85 participantsLow
Intervention NR
Satisfaction with the decision‐making process · people with a health condition (or pregnant) considering real clinical trial participation (across a range of topic…
Audio‐visual presentation of information for informed consent for participation in clinical trials (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Knowledge [questionnaire (scored out of 80), measured immediately post‐intervention] · people with a health condition or nominally 'well' considering real or hypothetical clinical trial participation in…
Audio‐visual presentation of information for informed consent for participation in clinical trials (2014) · Cochrane
no estimate extracted1 study · 93 participantsLow
Intervention NR
Knowledge [scored correct answer to single question, measured immediately post‐intervention] · people with a health condition or nominally 'well' considering real or hypothetical clinical trial participation in…
Audio‐visual presentation of information for informed consent for participation in clinical trials (2014) · Cochrane
RR 1.17 [0.96, 1.43]1 study · 49 participantsLow
Intervention NR
Satisfaction with the information provided [single question, measured immediately post‐intervention] · people with a health condition or nominally 'well' considering real or hypothetical clinical trial participation in…
Audio‐visual presentation of information for informed consent for participation in clinical trials (2014) · Cochrane
RR 3.3 [1.24, 8.78]1 study · 44 participantsLow
Intervention NR
Knowledge (Multi‐component intervention) [mean number of correct questionnaire responses, assessed immediately post‐intervention] · People with a health condition or nominally 'well' considering real clinical trial participation (across a range of…
Audio‐visual presentation of information for informed consent for participation in clinical trials (2014) · Cochrane
no estimate extracted1 study · 126 participantsVery low
Intervention NR
Rate of participation [case notes, measured immediately post‐intervention] · people with a health condition or nominally 'well' considering real or hypothetical clinical trial participation in…
Audio‐visual presentation of information for informed consent for participation in clinical trials (2014) · Cochrane
RR 0.41 [0.13, 1.33]1 study · 49 participantsLow
Intervention NR
Anxiety, or other psychological distress · people with a health condition or nominally 'well' considering real or hypothetical clinical trial participation in…
Audio‐visual presentation of information for informed consent for participation in clinical trials (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Retention of knowledge · people with a health condition or nominally 'well' considering real or hypothetical clinical trial participation in…
Audio‐visual presentation of information for informed consent for participation in clinical trials (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Satisfaction with the decision‐making process · people with a health condition or nominally 'well' considering real or hypothetical clinical trial participation in…
Audio‐visual presentation of information for informed consent for participation in clinical trials (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Satisfaction with the information provided (Single and multi‐component intervention) · People with a health condition or nominally 'well' considering real clinical trial participation (across a range of…
Audio‐visual presentation of information for informed consent for participation in clinical trials (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Rate of participation (Single intervention) · People with a health condition or nominally 'well' considering real clinical trial participation (across a range of…
Audio‐visual presentation of information for informed consent for participation in clinical trials (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Rate of participation (Multiple intervention) [questionnaire, measured immediately post‐intervention] · People with a health condition or nominally 'well' considering real clinical trial participation (across a range of…
Audio‐visual presentation of information for informed consent for participation in clinical trials (2014) · Cochrane
no estimate extracted1 study · 110 participantsVery low
Intervention NR
Anxiety, or other psychological distress (Single and multi‐component intervention) · People with a health condition or nominally 'well' considering real clinical trial participation (across a range of…
Audio‐visual presentation of information for informed consent for participation in clinical trials (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Retention of knowledge (Single and multi‐component intervention) · People with a health condition or nominally 'well' considering real clinical trial participation (across a range of…
Audio‐visual presentation of information for informed consent for participation in clinical trials (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Satisfaction with the decision‐making process (single intervention) · People with a health condition or nominally 'well' considering real clinical trial participation (across a range of…
Audio‐visual presentation of information for informed consent for participation in clinical trials (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Satisfaction with the decision‐making process (multi‐component intervention) [questionnaire, assessed immediately post‐intervention] · People with a health condition or nominally 'well' considering real clinical trial participation (across a range of…
Audio‐visual presentation of information for informed consent for participation in clinical trials (2014) · Cochrane
no estimate extracted1 study · 126 participantsVery low
Intervention NR
Treatment outcomes (Different measures) · CALD patients and their health professionals (Primary care settings in high income countries)
Cultural competence education for health professionals (2014) · Cochrane
no estimate extracted2 studies · 27672 participantsLow
Intervention NR
Health behaviours · CALD patients and their health professionals (Primary care settings in high income countries)
Cultural competence education for health professionals (2014) · Cochrane
no estimate extracted1 study · 282 participantsLow
Intervention NR
Involvement in care (Mutual understanding) · CALD patients and their health professionals (Primary care settings in high income countries)
Cultural competence education for health professionals (2014) · Cochrane
no estimate extracted1 study · 1092 participantsLow
Intervention NR
Evaluations of care (Different measures) · CALD patients and their health professionals (Primary care settings in high income countries)
Cultural competence education for health professionals (2014) · Cochrane
no estimate extracted3 studies · 1952 participantsLow
Intervention NR
Health professionals knowledge & understanding (Awareness of racial differences) · CALD patients and their health professionals (Primary care settings in high income countries)
Cultural competence education for health professionals (2014) · Cochrane
no estimate extracted1 study · 87 participantsLow
Intervention NR
Adverse events · CALD patients and their health professionals (Primary care settings in high income countries)
Cultural competence education for health professionals (2014) · Cochrane
no estimate extracted0 participantsUngraded
Intervention NR
Knowledge among participants of vaccine or vaccine‐preventable disease (number of people whose vaccine knowledge had increased;
Interventions aimed at communities to inform and/or educate about early childhood vaccination (2014) · Cochrane
no estimate extracted55821 participantsLow
Intervention NR
Knowledge among participants of vaccine service delivery
Interventions aimed at communities to inform and/or educate about early childhood vaccination (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Immunisation status of child (
Interventions aimed at communities to inform and/or educate about early childhood vaccination (2014) · Cochrane
no estimate extracted1 participantsModerate
Intervention NR
Participants' attitudes towards vaccination (number of parents who think it is worthwhile to vaccinate children;
Interventions aimed at communities to inform and/or educate about early childhood vaccination (2014) · Cochrane
no estimate extracted56361 participantsLow
Intervention NR
Participants' involvement in decision‐making regarding vaccination (number of mothers included in decisions about vaccination;
Interventions aimed at communities to inform and/or educate about early childhood vaccination (2014) · Cochrane
no estimate extracted55651 participantsLow
Intervention NR
Participant confidence in the decision made regarding vaccination
Interventions aimed at communities to inform and/or educate about early childhood vaccination (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Unintended or adverse effects
Interventions aimed at communities to inform and/or educate about early childhood vaccination (2014) · Cochrane
no estimate extractedNRNo studies