Keyphrases
Analgesia
7%
Analgesic Agents
7%
Cesarean Delivery
14%
Cesarean Section Rate
7%
Cochrane Library
7%
Embase
7%
External Cephalic Version
100%
Google Scholar
7%
Inconsistent Results
7%
MEDLINE
14%
Meta-analysis
100%
Multiple Regression Model
7%
Nitrous Oxide
100%
Non-associated
7%
Number of Participants
7%
Ovid
7%
Pain Score
35%
Peer Review
7%
Prospective Cohort Study
7%
Prospero
7%
PubMed
7%
Randomized Trial
7%
Singleton Pregnancy
7%
Success Rate
100%
Systematic Meta-analysis
100%
Treatment Group
7%
Vertex Presentation
14%
Nursing and Health Professions
Analgesia
7%
Analgesic Agent
7%
Cesarean Section
21%
Cochrane Library
7%
Effect Size
7%
External Cephalic Version
100%
Medline
14%
Meta Analysis
100%
Nitrous Oxide
100%
Peer Review
7%
Prospective Cohort Study
7%
Survey Method
7%
Systematic Review
100%
Treatment Group
7%
Medicine and Dentistry
Analgesia
7%
Anodyne
7%
Cesarean Section
21%
Effect Size
7%
External Cephalic Version
100%
Meta-Analysis
100%
Meta-Regression
7%
Nitrous Oxide
100%
Population Research
7%
Prospective Cohort Study
7%
Systematic Review
100%
Treatment Group
7%
Psychology
Medline
50%
Meta-Analysis
100%
Regression Model
50%
Systematic Review
100%
Biochemistry, Genetics and Molecular Biology
Cochrane Library
10%
Medline
20%
Nitrous Oxide
100%
Population Research
10%
Prospective Cohort Study
10%
Pharmacology, Toxicology and Pharmaceutical Science
Analgesic Agent
10%
Nitrous Oxide
100%
Population Study
10%
Prospective Cohort Study
10%
Treatment Group
10%