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)

2,353 questions in 210 reviews · Neonatal

current versions
No studies 432 · 18.4%Ungraded 99 · 4.2%Very low 609 · 25.9%Low 737 · 31.3%Moderate 385 · 16.4%High 91 · 3.9%

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
Intervention NR
INFANT DEVELOPMENT: Bayley Scales of Infant and Toddler Development‐III (BSID III) · preterm infants and their parents
Musical and vocal interventions to improve neurodevelopmental outcomes for preterm infants (2023) · Cochrane
no estimate extracted2 studies · 69 participantsLow
Intervention NR
PARENTAL ANXIETY: STAI‐T · preterm infants and their parents
Musical and vocal interventions to improve neurodevelopmental outcomes for preterm infants (2023) · Cochrane
no estimate extracted4 studies · 97 participantsLow
Intervention NR
RESPIRATORY RATE DURING intervention (lower = favourable) · preterm infants and their parents
Musical and vocal interventions to improve neurodevelopmental outcomes for preterm infants (2023) · Cochrane
no estimate extracted7 studies · 750 participantsModerate
Intervention NR
RESPIRATOTY RATE POST‐intervention (lower = favourable) · preterm infants and their parents
Musical and vocal interventions to improve neurodevelopmental outcomes for preterm infants (2023) · Cochrane
no estimate extracted5 studies · 636 participantsModerate
Intervention NR
HEART RATE DURING intervention (lower = favourable) · preterm infants and their parents
Musical and vocal interventions to improve neurodevelopmental outcomes for preterm infants (2023) · Cochrane
no estimate extracted11 studies · 1014 participantsModerate
CPAP and supportive care vs supportive care
Failed CPAP · preterm infants with apnoea of prematurity
Continuous positive airway pressure (CPAP) for apnoea of prematurity (2023) · Cochrane
no estimate extractedNRNo studies
Variable flow vs bubble CPAP
Adverse events · preterm infants, 24 to 29 weeks gestation and mean age 18 days with apnoea of prematurity
Continuous positive airway pressure (CPAP) for apnoea of prematurity (2023) · Cochrane
no estimate extractedNRNo studies
Variable flow vs bubble CPAP
Long‐term neurodevelopmental outcomes · preterm infants, 24 to 29 weeks gestation and mean age 18 days with apnoea of prematurity
Continuous positive airway pressure (CPAP) for apnoea of prematurity (2023) · Cochrane
no estimate extractedNRNo studies
Infant Flow CPAP vs Medijet CPAP
Failed CPAP · preterm infants with apnoea of prematurity (gestation 27 weeks, age not stated)
Continuous positive airway pressure (CPAP) for apnoea of prematurity (2023) · Cochrane
RR 2.62 [0.91, 7.53]1 study · 80 participantsVery low
Infant Flow CPAP vs Medijet CPAP
Mean apnoea events · preterm infants with apnoea of prematurity (gestation 27 weeks, age not stated)
Continuous positive airway pressure (CPAP) for apnoea of prematurity (2023) · Cochrane
no estimate extracted24 participantsUngraded
Infant Flow CPAP vs Medijet CPAP
Adverse events · preterm infants with apnoea of prematurity (gestation 27 weeks, age not stated)
Continuous positive airway pressure (CPAP) for apnoea of prematurity (2023) · Cochrane
22 participantsUngraded
Infant Flow CPAP vs Medijet CPAP
Long‐term neurodevelopmental outcomes · preterm infants with apnoea of prematurity (gestation 27 weeks, age not stated)
Continuous positive airway pressure (CPAP) for apnoea of prematurity (2023) · Cochrane
no estimate extractedNRNo studies
CPAP and supportive care vs supportive care
Mean apnoea events · preterm infants with apnoea of prematurity
Continuous positive airway pressure (CPAP) for apnoea of prematurity (2023) · Cochrane
no estimate extractedNRNo studies
CPAP and supportive care vs supportive care
Adverse events · preterm infants with apnoea of prematurity
Continuous positive airway pressure (CPAP) for apnoea of prematurity (2023) · Cochrane
no estimate extractedNRNo studies
CPAP and supportive care vs supportive care
Long‐term neurodevelopmental outcomes · preterm infants with apnoea of prematurity
Continuous positive airway pressure (CPAP) for apnoea of prematurity (2023) · Cochrane
no estimate extractedNRNo studies
Variable flow vs ventilator CPAP
Failed CPAP (defined as need for mechanical ventilation) · preterm infants with apnoea of prematurity (median age 9 days)
Continuous positive airway pressure (CPAP) for apnoea of prematurity (2023) · Cochrane
RR 0.16 [0.01, 2.9]1 study · 26 participantsVery low
Variable flow vs ventilator CPAP
Mean apnoea events (apnoea > 20 seconds with or without bradycardia or desaturation) Mean per 4‐hour interval · preterm infants with apnoea of prematurity (median age 9 days)
Continuous positive airway pressure (CPAP) for apnoea of prematurity (2023) · Cochrane
no estimate extracted1 study · 26 participantsVery low
Variable flow vs ventilator CPAP
Long‐term neurodevelopmental outcomes · preterm infants with apnoea of prematurity (median age 9 days)
Continuous positive airway pressure (CPAP) for apnoea of prematurity (2023) · Cochrane
no estimate extractedNRNo studies
Variable flow vs bubble CPAP
Failed CPAP · preterm infants, 24 to 29 weeks gestation and mean age 18 days with apnoea of prematurity
Continuous positive airway pressure (CPAP) for apnoea of prematurity (2023) · Cochrane
no estimate extractedNRNo studies
Variable flow vs bubble CPAP
Mean apnoea events · preterm infants, 24 to 29 weeks gestation and mean age 18 days with apnoea of prematurity
Continuous positive airway pressure (CPAP) for apnoea of prematurity (2023) · Cochrane
no estimate extractedNRNo studies
High‐protein formula vs standard‐protein formula
Underweight (weight‐for‐age z‐score) · healthy, full‐term, formula‐fed infants
Higher versus lower protein intake in formula‐fed term infants (2023) · Cochrane
no estimate extracted7 studies · 1629 participantsVery low
Standard‐protein formula vs low‐protein formula
Wasting (weight‐for‐height z‐score) · healthy, full‐term (37 to 42 weeks), formula‐fed infants
Higher versus lower protein intake in formula‐fed term infants (2023) · Cochrane
no estimate extracted4 studies · 256 participantsVery low
Standard‐protein formula vs low‐protein formula
Overweight · healthy, full‐term (37 to 42 weeks), formula‐fed infants
Higher versus lower protein intake in formula‐fed term infants (2023) · Cochrane
no estimate extractedNRNo studies
Standard‐protein formula vs low‐protein formula
Obesity · healthy, full‐term (37 to 42 weeks), formula‐fed infants
Higher versus lower protein intake in formula‐fed term infants (2023) · Cochrane
no estimate extractedNRNo studies
Standard‐protein formula vs low‐protein formula
All‐cause mortality · healthy, full‐term (37 to 42 weeks), formula‐fed infants
Higher versus lower protein intake in formula‐fed term infants (2023) · Cochrane
no estimate extractedNRNo studies
Standard‐protein formula vs low‐protein formula
Adverse events · healthy, full‐term (37 to 42 weeks), formula‐fed infants
Higher versus lower protein intake in formula‐fed term infants (2023) · Cochrane
Peto OR 1.55 [0.7, 3.4]2 studies · 206 participantsLow
High‐protein formula vs standard‐protein formula
Stunting (height‐for‐age z‐score) · healthy, full‐term, formula‐fed infants
Higher versus lower protein intake in formula‐fed term infants (2023) · Cochrane
no estimate extracted7 studies · 1629 participantsVery low
High‐protein formula vs standard‐protein formula
Wasting (weight‐for‐height z‐score) · healthy, full‐term, formula‐fed infants
Higher versus lower protein intake in formula‐fed term infants (2023) · Cochrane
no estimate extracted7 studies · 1629 participantsVery low
High‐protein formula vs standard‐protein formula
Overweight · healthy, full‐term, formula‐fed infants
Higher versus lower protein intake in formula‐fed term infants (2023) · Cochrane
RR 1.26 [0.63, 2.51]1 study · 1090 participantsVery low
High‐protein formula vs standard‐protein formula
Obesity · healthy, full‐term, formula‐fed infants
Higher versus lower protein intake in formula‐fed term infants (2023) · Cochrane
RR 1.96 [0.59, 6.48]1 study · 1090 participantsVery low
High‐protein formula vs standard‐protein formula
All‐cause mortality · healthy, full‐term, formula‐fed infants
Higher versus lower protein intake in formula‐fed term infants (2023) · Cochrane
no estimate extractedNRNo studies
High‐protein formula vs standard‐protein formula
Adverse events · healthy, full‐term, formula‐fed infants
Higher versus lower protein intake in formula‐fed term infants (2023) · Cochrane
RR 0.93 [0.76, 1.13]4 studies · 445 participantsLow
Standard‐protein formula vs low‐protein formula
Underweight (weight‐for‐age z‐score) · healthy, full‐term (37 to 42 weeks), formula‐fed infants
Higher versus lower protein intake in formula‐fed term infants (2023) · Cochrane
no estimate extracted4 studies · 256 participantsVery low
Standard‐protein formula vs low‐protein formula
Stunting (height‐for‐age z‐score) · healthy, full‐term (37 to 42 weeks), formula‐fed infants
Higher versus lower protein intake in formula‐fed term infants (2023) · Cochrane
no estimate extracted4 studies · 256 participantsVery low
Methylxanthine vs placebo or control
Death or major neurodevelopmental disability at 18 to 24 months · preterm infants at risk of or with apnea; preterm infants undergoing extubation
Methylxanthine for the prevention and treatment of apnea in preterm infants (2023) · Cochrane
RR 0.87 [0.78, 0.97]1 study · 1869 participantsModerate
Methylxanthine vs placebo or control
Death or major neurodevelopmental disability at 18 to 24 months · preterm infants at risk for apnea
Methylxanthine for the prevention and treatment of apnea in preterm infants (2023) · Cochrane
RR 1 [0.8, 1.24]1 study · 423 participantsModerate
Methylxanthine vs placebo or control
Death at hospital discharge · preterm infants at risk for apnea
Methylxanthine for the prevention and treatment of apnea in preterm infants (2023) · Cochrane
RR 2.19 [0.85, 5.68]3 studies · 129 participantsVery low
Methylxanthine vs placebo or control
Major neurodevelopmental disability · preterm infants at risk for apnea
Methylxanthine for the prevention and treatment of apnea in preterm infants (2023) · Cochrane
no estimate extractedNRNo studies
Methylxanthine vs placebo or control
a) Cerebral palsy or gross motor disability · preterm infants at risk for apnea
Methylxanthine for the prevention and treatment of apnea in preterm infants (2023) · Cochrane
RR 1.03 [0.43, 2.49]1 study · 415 participantsModerate
Methylxanthine vs placebo or control
b) Developmental delay · preterm infants at risk for apnea
Methylxanthine for the prevention and treatment of apnea in preterm infants (2023) · Cochrane
RR 1.08 [0.83, 1.4]1 study · 396 participantsModerate
Methylxanthine vs placebo or control
Any apneic episodes · preterm infants at risk for apnea
Methylxanthine for the prevention and treatment of apnea in preterm infants (2023) · Cochrane
RR 0.19 [0.09, 0.41]2 studies · 104 participantsLow
Methylxanthine vs placebo or control
Positive‐pressure ventilation after institution of treatment · preterm infants at risk for apnea
Methylxanthine for the prevention and treatment of apnea in preterm infants (2023) · Cochrane
RR 1.33 [0.48, 3.72]4 studies · 208 participantsLow
Methylxanthine vs placebo or control
Supplemental oxygen at 36 weeks' postmenstrual age · preterm infants at risk for apnea
Methylxanthine for the prevention and treatment of apnea in preterm infants (2023) · Cochrane
RR 0.78 [0.63, 0.97]3 studies · 541 participantsModerate
Methylxanthine vs placebo or control
Death or major neurodevelopmental disability at 18 to 24 months · preterm infants with apnea
Methylxanthine for the prevention and treatment of apnea in preterm infants (2023) · Cochrane
RR 0.85 [0.71, 1.01]1 study · 767 participantsModerate
Methylxanthine vs placebo or control
Death at hospital discharge · preterm infants with apnea
Methylxanthine for the prevention and treatment of apnea in preterm infants (2023) · Cochrane
RR 0.49 [0.14, 1.78]3 studies · 154 participantsLow
Methylxanthine vs placebo or control
Death at hospital discharge · preterm infants at risk of or with apnea; preterm infants undergoing extubation
Methylxanthine for the prevention and treatment of apnea in preterm infants (2023) · Cochrane
RR 0.99 [0.71, 1.37]7 studies · 2289 participantsModerate
Methylxanthine vs placebo or control
Major neurodevelopmental disability at 18 to 24 months · preterm infants with apnea
Methylxanthine for the prevention and treatment of apnea in preterm infants (2023) · Cochrane
no estimate extractedNRNo studies
Methylxanthine vs placebo or control
a) Cerebral palsy or gross motor disability · preterm infants with apnea
Methylxanthine for the prevention and treatment of apnea in preterm infants (2023) · Cochrane
RR 0.6 [0.29, 1.25]1 study · 729 participantsModerate
Methylxanthine vs placebo or control
b) Developmental delay at 18 to 24 months · preterm infants with apnea
Methylxanthine for the prevention and treatment of apnea in preterm infants (2023) · Cochrane
RR 0.86 [0.69, 1.06]1 study · 715 participantsModerate
Methylxanthine vs placebo or control
Any apneic episodes · preterm infants with apnea
Methylxanthine for the prevention and treatment of apnea in preterm infants (2023) · Cochrane
RR 0.7 [0.3, 1.62]1 study · 43 participantsVery low