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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)

1,080 questions in 109 reviews · Acute Respiratory Infections

current versions
No studies 132 · 12.2%Ungraded 90 · 8.3%Very low 169 · 15.6%Low 306 · 28.3%Moderate 287 · 26.6%High 96 · 8.9%

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
Magnesium sulphate vs hypertonic saline
Clinical severity score (CSS) (RDAI score; range 0 to 17; higher = poorer outcomes) measured at 0 to 24 hoursafter treatment · children up to 12 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
no estimate extractedNRNo studies
Magnesium sulphate vs hypertonic saline
Clinical severity score (CSS) (RDAI score; range 0 to 17; higher = poorer outcomes) measured at 25 to 48 hoursafter treatment · children up to 12 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
MD 0.11 study · 220 participantsVery low
Magnesium sulphate vs hypertonic saline
Hospital re‐admission within 30 days of discharge · children up to 12 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
no estimate extractedNRNo studies
Magnesium sulphate or magnesium sulphate + salbutamol vs salbutamol
Time to recovery · children from 1 month to 24 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
no estimate extractedNRNo studies
Magnesium sulphate or magnesium sulphate + salbutamol vs salbutamol
Mortality · children from 1 month to 24 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
no estimate extracted1 study · 56 participantsUngraded
Magnesium sulphate or magnesium sulphate + salbutamol vs salbutamol
Adverse events · children from 1 month to 24 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
no estimate extracted1 study · 56 participantsUngraded
Magnesium sulphate or magnesium sulphate + salbutamol vs salbutamol
Duration of hospital stay · children from 1 month to 24 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
no estimate extracted1 study · 56 participantsUngraded
Magnesium sulphate or magnesium sulphate + salbutamol vs salbutamol
Clinical severity score (CSS) (Wang score; range 0 to 12; higher = poorer outcome) measured at 0 to 24 hoursafter treatment · children from 1 month to 24 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
no estimate extractedNRNo studies
Magnesium sulphate vs placebo
Mortality · children up to 18 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
no estimate extracted1 study · 160 participantsUngraded
Magnesium sulphate or magnesium sulphate + salbutamol vs salbutamol
Clinical severity score (CSS) (Wang score; range 0 to 12; higher = poorer outcome) measured 25 to 48 hoursafter treatment · children from 1 month to 24 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
no estimate extractedNRNo studies
Magnesium sulphate or magnesium sulphate + salbutamol vs salbutamol
Hospital re‐admission within 30 days of discharge · children from 1 month to 24 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
no estimate extractedNRNo studies
Magnesium sulphate + epinephrine vs no treatment or normal saline + epinephrine
Time to recovery · children up to 12 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
no estimate extractedNRNo studies
Magnesium sulphate + epinephrine vs no treatment or normal saline + epinephrine
Mortality · children up to 12 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
no estimate extractedNRNo studies
Magnesium sulphate + epinephrine vs no treatment or normal saline + epinephrine
Adverse events · children up to 12 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
no estimate extractedNRNo studies
Magnesium sulphate + epinephrine vs no treatment or normal saline + epinephrine
Duration of hospital stay · children up to 12 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
no estimate extracted1 study · 120 participantsVery low
Magnesium sulphate + epinephrine vs no treatment or normal saline + epinephrine
Clinical severity score (CSS) (RDAI score; range 0 to 17; higher = poorer outcomes) measured at 0 to 24 hoursafter treatment · children up to 12 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
no estimate extracted1 study · 120 participantsVery low
Magnesium sulphate + epinephrine vs no treatment or normal saline + epinephrine
Clinical severity score (CSS) (RDAI score; range 0 to 17; higher = poorer outcomes) measured 25 to 48 hoursafter treatment · children up to 12 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
no estimate extracted1 study · 120 participantsVery low
Magnesium sulphate + epinephrine vs no treatment or normal saline + epinephrine
Hospital re‐admission within 30 days of discharge · children up to 12 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
no estimate extractedNRNo studies
Magnesium sulphate vs placebo
Adverse events · children up to 18 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
no estimate extracted1 study · 160 participantsUngraded
Magnesium sulphate vs placebo
Duration of hospital stay · children up to 18 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
no estimate extracted1 study · 160 participantsUngraded
Magnesium sulphate vs placebo
Clinical severity score (CSS) (Wang score; range 0 to 12; higher = poorer outcome)measured at 0 to 24 hoursafter treatment · children up to 18 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
MD 0.131 study · 160 participantsVery low
Magnesium sulphate vs placebo
Clinical severity score (CSS) (Wang score; range 0 to 12; higher = poorer outcome)measured at 25 to 48 hoursafter treatment · children up to 18 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
no estimate extracted1 study · 160 participantsVery low
Magnesium sulphate vs placebo
Hospital re‐admission within 30 days of discharge (re‐admissions were reported at 14 days) · children up to 18 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
RR 3.16 [1.2, 8.27]1 study · 158 participantsLow
Magnesium sulphate vs hypertonic saline
Time to recovery · children up to 12 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
no estimate extractedNRNo studies
Magnesium sulphate vs hypertonic saline
Mortality · children up to 12 months old with acute bronchiolitis
Magnesium sulphate for treating acute bronchiolitis in children up to two years of age (2020) · Cochrane
no estimate extractedNRNo studies
Chest physiotherapy vs no chest physiotherapy
Mortality ( · children aged from 29 days to 12 years with pneumonia
Chest physiotherapy for pneumonia in children (2019) · Cochrane
RR 0.28 [0.08, 0.9]1 study · 225 participantsLow
Chest physiotherapy vs no chest physiotherapy
Duration of hospital stay (days) ( · children aged from 29 days to 12 years with pneumonia
Chest physiotherapy for pneumonia in children (2019) · Cochrane
MD 0.14 studies · 415 participantsLow
Chest physiotherapy vs no chest physiotherapy
Time to clinical resolution (all parameters) ( · children aged from 29 days to 12 years with pneumonia
Chest physiotherapy for pneumonia in children (2019) · Cochrane
no estimate extracted6 studies · 559 participantsLow
Chest physiotherapy vs no chest physiotherapy
Adverse events (number of events) ( · children aged from 29 days to 12 years with pneumonia
Chest physiotherapy for pneumonia in children (2019) · Cochrane
RR 1.28 [0.98, 1.67]2 studies · 254 participantsLow
Corticosteroid therapy vs no corticosteroid therapy
Number of deaths at 30 days following admission (30‐day mortality)a · individuals with influenza
Corticosteroids as adjunctive therapy in the treatment of influenza (2019) · Cochrane
OR 3.9 [2.31, 6.6]21 studies · 9536 participantsVery low
Corticosteroid therapy vs no corticosteroid therapy
Rate of admission to intensive care units · individuals with influenza
Corticosteroids as adjunctive therapy in the treatment of influenza (2019) · Cochrane
OR 5.13 [4.26, 6.17]1 study · 2141 participantsVery low
Corticosteroid therapy vs no corticosteroid therapy
Number and nature of adverse events secondary to corticosteroid use (hospital‐acquired infection) · individuals with influenza
Corticosteroids as adjunctive therapy in the treatment of influenza (2019) · Cochrane
OR 2.74 [1.51, 4.95]7 studies · 6114 participantsVery low
Corticosteroid therapy vs no corticosteroid therapy
Proportion of participants requiring mechanical ventilation · individuals with influenza
Corticosteroids as adjunctive therapy in the treatment of influenza (2019) · Cochrane
no estimate extracted4 studies · 4364 participantsVery low
Gastrointestinal adverse events in people taking macrolide antibiotics vs placebo
Gastrointestinal disorders not otherwise specified · any indication
Adverse events in people taking macrolide antibiotics versus placebo for any indication (2019) · Cochrane
OR 2.16 [1.56, 3]23 studies · 3295 participantsModerate
Other adverse events in people taking macrolide antibiotics vs placebo
Deaths · any indication
Adverse events in people taking macrolide antibiotics versus placebo for any indication (2019) · Cochrane
OR 0.96 [0.87, 1.06]52 studies · 216246 participantsLow
Gastrointestinal adverse events in people taking macrolide antibiotics vs placebo
Abdominal pain · any indication
Adverse events in people taking macrolide antibiotics versus placebo for any indication (2019) · Cochrane
OR 1.66 [1.22, 2.26]23 studies · 7776 participantsLow
Gastrointestinal adverse events in people taking macrolide antibiotics vs placebo
Diarrhoea · any indication
Adverse events in people taking macrolide antibiotics versus placebo for any indication (2019) · Cochrane
OR 1.7 [1.34, 2.16]37 studies · 23754 participantsLow
Gastrointestinal adverse events in people taking macrolide antibiotics vs placebo
Nausea · any indication
Adverse events in people taking macrolide antibiotics versus placebo for any indication (2019) · Cochrane
OR 1.61 [1.37, 1.9]28 studies · 14983 participantsModerate
Gastrointestinal adverse events in people taking macrolide antibiotics vs placebo
Vomiting · any indication
Adverse events in people taking macrolide antibiotics versus placebo for any indication (2019) · Cochrane
OR 1.27 [1.04, 1.56]15 studies · 5328 participantsModerate
Other adverse events in people taking macrolide antibiotics vs placebo
Cardiac disorders · any indication
Adverse events in people taking macrolide antibiotics versus placebo for any indication (2019) · Cochrane
OR 0.87 [0.54, 1.4]7 studies · 1715 participantsVery low
Other adverse events in people taking macrolide antibiotics vs placebo
Hearing loss · any indication
Adverse events in people taking macrolide antibiotics versus placebo for any indication (2019) · Cochrane
OR 1.3 [1, 1.7]4 studies · 1369 participantsLow
Other adverse events in people taking macrolide antibiotics vs placebo
Taste disturbance · any indication
Adverse events in people taking macrolide antibiotics versus placebo for any indication (2019) · Cochrane
OR 4.95 [1.64, 14.93]5 studies · 932 participantsLow
Other adverse events in people taking macrolide antibiotics vs placebo
Hepatobiliary disorders · any indication
Adverse events in people taking macrolide antibiotics versus placebo for any indication (2019) · Cochrane
OR 1.04 [0.27, 4.09]4 studies · 443 participantsVery low
Probiotic vs placebo
Proportion of children with AOM (overall) · children up to age 18 years
Probiotics for preventing acute otitis media in children (2019) · Cochrane
RR 0.77 [0.63, 0.93]16 studies · 2961 participantsModerate
Probiotic vs placebo
Proportion of children with AOM: children not prone to AOM · children up to age 18 years
Probiotics for preventing acute otitis media in children (2019) · Cochrane
RR 0.64 [0.49, 0.84]11 studies · 2227 participantsModerate
Probiotic vs placebo
Proportion of children with AOM: children prone to AOM · children up to age 18 years
Probiotics for preventing acute otitis media in children (2019) · Cochrane
RR 0.97 [0.85, 1.11]5 studies · 734 participantsHigh
Probiotic vs placebo
Severity of AOM · children up to age 18 years
Probiotics for preventing acute otitis media in children (2019) · Cochrane
no estimate extractedNRNo studies
Probiotic vs placebo
Adverse events · children up to age 18 years
Probiotics for preventing acute otitis media in children (2019) · Cochrane
OR 1.54 [0.6, 3.94]4 studies · 395 participantsLow
Probiotic vs placebo
Time off school for child · children up to age 18 years
Probiotics for preventing acute otitis media in children (2019) · Cochrane
no estimate extracted5 studies · 1280 participantsModerate
Probiotic vs placebo
Difference in the use of antibiotics · children up to age 18 years
Probiotics for preventing acute otitis media in children (2019) · Cochrane
RR 0.66 [0.51, 0.86]8 studies · 1768 participantsModerate