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.
612 questions in 46 reviews · Work
current versionsNo 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.
| Question | Effect | Evidence | Status / GRADE |
|---|---|---|---|
Arm support combined with alternative mouse vs conventional mouse alone Work related function · office workers Ergonomic interventions for preventing work‐related musculoskeletal disorders of the upper limb and neck… (2018) · Cochrane | no estimate extracted | NR | No studies |
Arm support with conventional mouse vs conventional mouse alone Incidence of upper body disorders Questionnaire followed by medical examination · office workers Ergonomic interventions for preventing work‐related musculoskeletal disorders of the upper limb and neck… (2018) · Cochrane | RR 0.87 [0.42, 1.8] | 2 studies · 191 participants | Low |
Arm support with conventional mouse vs conventional mouse alone Incidence of neck or shoulder disorder Questionnaire followed by medical examination · office workers Ergonomic interventions for preventing work‐related musculoskeletal disorders of the upper limb and neck… (2018) · Cochrane | RR 0.91 [0.12, 6.98] | 2 studies · 186 participants | Low |
Arm support with conventional mouse vs conventional mouse alone Incidence of right upper extremity disorders Questionnaire followed by medical examination · office workers Ergonomic interventions for preventing work‐related musculoskeletal disorders of the upper limb and neck… (2018) · Cochrane | OR 1.07 [0.58, 1.96] | 2 studies · 178 participants | Moderate |
Progressive computer glasses vs monofocal computer glasses Asthenopia (change from baseline to 12 months) VAS scale 0 to 100 12 months' · computer workers Optical correction of refractive error for preventing and treating eye symptoms in computer users (2018) · Cochrane | no estimate extracted | 1 study · 186 participants | Low |
Progressive computer glasses with far distance focus vs bifocal computer lenses Headache (improvement of symptoms after 4 weeks) · computer workers Optical correction of refractive error for preventing and treating eye symptoms in computer users (2018) · Cochrane | OR 1.43 [0.27, 7.55] | 1 study · 36 participants | Very low |
Progressive computer glasses with far distance focus vs bifocal computer lenses Nausea (improvement of symptoms after 4 weeks) · computer workers Optical correction of refractive error for preventing and treating eye symptoms in computer users (2018) · Cochrane | RR 1.29 [0.68, 2.45] | 1 study · 8 participants | Very low |
Progressive computer glasses with far distance focus vs bifocal computer lenses Dizziness (improvement of symptoms after 4 weeks) · computer workers Optical correction of refractive error for preventing and treating eye symptoms in computer users (2018) · Cochrane | RR 1 [0.25, 4] | 1 study · 8 participants | Very low |
Progressive computer glasses with far distance focus vs trifocal computer glasses Asthenopia (eyestrain severity) Likert scale 0 to 10 3 weeks · computer workers Optical correction of refractive error for preventing and treating eye symptoms in computer users (2018) · Cochrane | no estimate extracted | 1 study · 24 participants | Very low |
Progressive computer glasses with far distance focus vs trifocal computer glasses Asthenopia (eyestrain frequency) Likert scale 0 to 10 3 weeks' · computer workers Optical correction of refractive error for preventing and treating eye symptoms in computer users (2018) · Cochrane | no estimate extracted | 1 study · 24 participants | Very low |
Progressive computer glasses with far distance focus vs monofocal computer glasses Asthenopia (change from baseline to 12 months) VAS scale 0 to 100 12 months' · computer workers Optical correction of refractive error for preventing and treating eye symptoms in computer users (2018) · Cochrane | no estimate extracted | 1 study · 64 participants | Low |
Progressive computer glasses with far distance focus vs monofocal computer glasses Headache (change from baseline to 12 months) VAS scale 0 to 100 12 months' · computer workers Optical correction of refractive error for preventing and treating eye symptoms in computer users (2018) · Cochrane | no estimate extracted | 1 study · 64 participants | Very low |
Computer glasses vs Ergonomic assessment plus habitual (computer) glasses Asthenopia, summed score scale 1 to 140 3 weeks' · computer workers Optical correction of refractive error for preventing and treating eye symptoms in computer users (2018) · Cochrane | no estimate extracted | 1 study · 24 participants | Very low |
Computer glasses vs Ergonomic assessment plus habitual (computer) glasses Asthenopia Change score 3 weeks' · computer workers Optical correction of refractive error for preventing and treating eye symptoms in computer users (2018) · Cochrane | no estimate extracted | 1 study · 24 participants | Very low |
Computer glasses vs Ergonomic assessment plus habitual (computer) glasses Eyestrain (yes/no) · computer workers Optical correction of refractive error for preventing and treating eye symptoms in computer users (2018) · Cochrane | RR 0.95 [0.67, 1.34] | 1 study · 24 participants | Very low |
Progressive computer glasses vs monofocal computer glasses Headache (change from baseline to 12 months) VAS scale 0 to 100 12 months' · computer workers Optical correction of refractive error for preventing and treating eye symptoms in computer users (2018) · Cochrane | no estimate extracted | 1 study · 186 participants | Low |
Computer glasses vs Ergonomic assessment plus habitual (computer) glasses Headache (yes/no) · computer workers Optical correction of refractive error for preventing and treating eye symptoms in computer users (2018) · Cochrane | RR 0.92 [0.52, 1.63] | 1 study · 24 participants | Very low |
Computer glasses vs Ergonomic assessment plus habitual (computer) glasses Upset stomach (yes/no) · computer workers Optical correction of refractive error for preventing and treating eye symptoms in computer users (2018) · Cochrane | RR 0.5 [0.14, 1.79] | 1 study · 24 participants | Very low |
Progressive computer glasses with intermediate distance focus vs progressive glasses Asthenopia (two different scales), Short term · computer workers Optical correction of refractive error for preventing and treating eye symptoms in computer users (2018) · Cochrane | no estimate extracted | 2 studies · 58 participants | Low |
Progressive computer glasses with intermediate distance focus vs progressive glasses Asthenopia Medium term · computer workers Optical correction of refractive error for preventing and treating eye symptoms in computer users (2018) · Cochrane | no estimate extracted | 1 study · 35 participants | Low |
Progressive computer glasses with intermediate distance focus vs progressive glasses Headache scale 1 to 6 1‐week · computer workers Optical correction of refractive error for preventing and treating eye symptoms in computer users (2018) · Cochrane | no estimate extracted | 1 study · 23 participants | Low |
Progressive computer glasses with intermediate distance focus vs progressive glasses Dizziness score 1 to 6 1‐week · computer workers Optical correction of refractive error for preventing and treating eye symptoms in computer users (2018) · Cochrane | no estimate extracted | 1 study · 23 participants | Low |
Progressive computer glasses with intermediate distance focus vs monofocal computer glasses Asthenopia (change from baseline to 12 months) VAS scale 0 to 100 12 months' · computer workers Optical correction of refractive error for preventing and treating eye symptoms in computer users (2018) · Cochrane | no estimate extracted | 1 study · 64 participants | Low |
Progressive computer glasses with intermediate distance focus vs monofocal computer glasses Headache (change from baseline to 12 months) VAS scale 0 to 100 12 months' · computer workers Optical correction of refractive error for preventing and treating eye symptoms in computer users (2018) · Cochrane | no estimate extracted | 1 study · 64 participants | Very low |
Progressive computer glasses with far distance focus vs bifocal computer lenses Asthenopia (improvement of symptoms after 4 weeks) · computer workers Optical correction of refractive error for preventing and treating eye symptoms in computer users (2018) · Cochrane | RR 1 [0.8, 1.24] | 1 study · 38 participants | Very low |
Alternative desks and workstations vs sit‐desks Mean difference in time spent sitting at work, short‐term · employees who sit at work Workplace interventions for reducing sitting at work (2018) · Cochrane | no estimate extracted | 10 studies · 323 participants | Low |
Information, feedback, and/or counselling vs information only or no intervention Mean difference in time spent sitting at work, short‐term · employees who sit at work Workplace interventions for reducing sitting at work (2018) · Cochrane | no estimate extracted | 3 studies · 103 participants | Low |
Information, feedback, and/or counselling vs information only or no intervention Mean difference in time in sitting bouts lasting 30 minutes or more, short‐term · employees who sit at work Workplace interventions for reducing sitting at work (2018) · Cochrane | no estimate extracted | 1 study · 28 participants | Low |
Information, feedback, and/or counselling vs information only or no intervention Mean difference in time spent sitting at work, medium‐term · employees who sit at work Workplace interventions for reducing sitting at work (2018) · Cochrane | no estimate extracted | 1 study · 257 participants | Low |
Information, feedback, and/or counselling vs information only or no intervention Mean difference in time in sitting bouts lasting 30 minutes or more, medium‐term · employees who sit at work Workplace interventions for reducing sitting at work (2018) · Cochrane | no estimate extracted | NR | No studies |
Multi‐component intervention vs no intervention Mean difference in time spent sitting at work, short‐term · employees who sit at work Workplace interventions for reducing sitting at work (2018) · Cochrane | no estimate extracted | 3 studies · 573 participants | Very low |
Multi‐component intervention vs no intervention Mean difference in time in sitting bouts lasting 30 minutes or more, short‐term · employees who sit at work Workplace interventions for reducing sitting at work (2018) · Cochrane | no estimate extracted | 2 studies · 518 participants | Very low |
Alternative desks and workstations vs sit‐desks Mean difference in time in sitting bouts lasting 30 minutes or more, short‐term · employees who sit at work Workplace interventions for reducing sitting at work (2018) · Cochrane | no estimate extracted | 74 participants | Very low |
Alternative desks and workstations vs sit‐desks Mean difference in time in sitting bouts lasting 30 minutes or more, short‐term · employees who sit at work Workplace interventions for reducing sitting at work (2018) · Cochrane | no estimate extracted | NR | No studies |
Alternative desks and workstations vs sit‐desks Mean difference in time spent in inactive sitting at work, medium‐term · employees who sit at work Workplace interventions for reducing sitting at work (2018) · Cochrane | no estimate extracted | 1 study · 54 participants | Low |
Workplace policy changes vs no intervention or alternate intervention Mean difference in time spent sitting at work, short‐term · employees who sit at work Workplace interventions for reducing sitting at work (2018) · Cochrane | no estimate extracted | 1 study · 179 participants | Low |
Workplace policy changes vs no intervention or alternate intervention Mean difference in time in sitting bouts lasting 30 minutes or more, short‐term · employees who sit at work Workplace interventions for reducing sitting at work (2018) · Cochrane | no estimate extracted | NR | No studies |
Information, feedback, and/or counselling vs information only or no intervention Mean difference in time spent sitting at work, short‐term · employees who sit at work Workplace interventions for reducing sitting at work (2018) · Cochrane | no estimate extracted | 2 studies · 63 participants | Low |
Information, feedback, and/or counselling vs information only or no intervention Mean difference in time spent sitting at work, medium‐term · employees who sit at work Workplace interventions for reducing sitting at work (2018) · Cochrane | no estimate extracted | 2 studies · 747 participants | Low |
Information, feedback, and/or counselling vs information only or no intervention Mean difference in time in sitting bouts lasting 30 minutes or more, short‐term · employees who sit at work Workplace interventions for reducing sitting at work (2018) · Cochrane | no estimate extracted | NR | No studies |
Physical ergonomic intervention vs no intervention Number of workers with newly diagnosed WMSD (incident cases) · Dentists Ergonomic interventions for preventing musculoskeletal disorders in dental care practitioners (2018) · Cochrane | no estimate extracted | NR | No studies |
Physical ergonomic intervention vs no intervention Self‐reported complaints of MSD pain in thighs (Nordic musculoskeletal questionnaire) · Dentists Ergonomic interventions for preventing musculoskeletal disorders in dental care practitioners (2018) · Cochrane | RR 0.57 [0.23, 1.42] | 1 study · 102 participants | Very low |
Physical ergonomic intervention vs no intervention Self‐reported complaints of MSD pain in feet (Nordic musculoskeletal questionnaire) · Dentists Ergonomic interventions for preventing musculoskeletal disorders in dental care practitioners (2018) · Cochrane | RR 0.64 [0.29, 1.41] | 1 study · 102 participants | Very low |
Physical ergonomic intervention vs no intervention Work functioning or disability · Dentists Ergonomic interventions for preventing musculoskeletal disorders in dental care practitioners (2018) · Cochrane | no estimate extracted | NR | No studies |
Physical ergonomic intervention vs alternative instrument design Number of workers with newly diagnosed WMSD (incident cases) · Dentists and dental hygienists who performed scaling, root planing, or dental prophylaxis procedures Ergonomic interventions for preventing musculoskeletal disorders in dental care practitioners (2018) · Cochrane | no estimate extracted | NR | No studies |
Physical ergonomic intervention vs alternative instrument design Self‐reported complaints of MSD pain in right upper extremity – elbow, forearm (0‐ to 10‐point scale; 0 = no pain, 10 = unbearable pain) · Dentists and dental hygienists who performed scaling, root planing, or dental prophylaxis procedures Ergonomic interventions for preventing musculoskeletal disorders in dental care practitioners (2018) · Cochrane | no estimate extracted | 1 study · 108 participants | Low |
Physical ergonomic intervention vs alternative instrument design Self‐reported complaints of MSD pain in right upper extremity – shoulder (0‐ to 10‐point scale; 0 = no pain, 10 = unbearable pain) · Dentists and dental hygienists who performed scaling, root planing, or dental prophylaxis procedures Ergonomic interventions for preventing musculoskeletal disorders in dental care practitioners (2018) · Cochrane | no estimate extracted | 1 study · 108 participants | Low |
Physical ergonomic intervention vs alternative instrument design Work functioning or disability · Dentists and dental hygienists who performed scaling, root planing, or dental prophylaxis procedures Ergonomic interventions for preventing musculoskeletal disorders in dental care practitioners (2018) · Cochrane | no estimate extracted | NR | No studies |
High correlated colour temperature light vs standard illumination Alertness · daytime workers Workplace lighting for improving alertness and mood in daytime workers (2018) · Cochrane | no estimate extracted | 163 participants | Very low |
Individually applied blue‐enriched light vs no treatment Adverse events · daytime workers Workplace lighting for improving alertness and mood in daytime workers (2018) · Cochrane | no estimate extracted | NR | No studies |