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Likis FE, Andrews JC, Collins MR, et al. Nitrous Oxide for the Management of Labor Pain [Internet]. Rockville (MD): Agency for Healthcare Research and Quality (US); 2012 Aug. (Comparative Effectiveness Reviews, No. 67.)
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Table 1Preliminary PubMed search strategies
Preliminary Search Terms | Preliminary Search Results | |
---|---|---|
#1 | “Nitrous Oxide”[Mesh] OR “nitrous oxide”[tw] OR “N2O”[tw] OR “laughing gas”[tw] OR “Entonox “[Substance Name] OR Entonox[tw] OR Equanox[tw] OR Kalinox[tw] OR Medimix[tw] OR “Dinitrogen Monoxide”[tw] OR Kalinox[tw] OR Medimix[tw] OR “Dinitrogen Monoxide”[tw] | 19,052 |
#2 | “Labor Pain”[Mesh] OR “Labor, Obstetric”[Mesh] OR labor[tw] OR “parturition”[MeSH Terms] OR “pregnancy”[MeSH Terms] OR “pregnancy”[tw] OR “Analgesia, Obstetrical”[mh] OR “obstetric”[tw] OR birth[tw] OR childbirth[tw] OR labour[tw] OR intrapartum[tw] OR delivery, obstetric[mh] | 867,187 |
#3 | #1 AND #2 AND eng[la] AND humans[mh] | 646 |
#4 | #3 AND letter[pt] | 27 |
#5 | #3 AND comment[pt] | 14 |
#6 | #3 AND case reports[pt] | 50 |
#7 | #3 AND review[pt] | 72 |
#8 | #3 AND news[pt] | 2 |
#9 | #3 AND editorial[pt] | 5 |
#10 | #3 AND historical article[pt] | 6 |
#11 | #3 AND meta-analysis[pt] | 1 |
#12 | #3 NOT (#4 OR #5 OR #6 OR #7 OR #8 OR #9 OR #10 OR #11) | 495* |
Table 2EMBASE search strategies
Preliminary Search Terms | Preliminary Search Results | |
---|---|---|
#1 | nitrous oxide.mp. or nitrous oxide/ or entonox.mp. or nitrous oxide plus oxygen/ or n20.mp. or laughing gas.mp. or equanox.mp. or kalinox.mp. or medimix.mp. or dinitrogen monoxide.mp. | 30,451 |
#2 | pregnancy/ or pregnancy.mp. or CHILDBIRTH/ or childbirth.mp. or labor pain.mp. or labor pain/ or obstetric analgesia.mp. or obstetric analgesia/ or delivery/ or delivery.mp. or INTRAPARTUM CARE/ or intrapartum.mp. or LABOR/ or labor.mp. | 537,234 |
#3 | #1 AND #2 | 1,789 |
#4 | Limit #3 to (human and english language) | 1,178 |
#5 | Limit #4 to (editorial or letter or “review”) | 319 |
#6 | #4 NOT #5 | 859* |
Table 3CINAHL search strategies
Preliminary Search Terms | Preliminary Search Results | |
---|---|---|
#1 | (MH “Nitrous Oxide”) OR “nitrous oxide” OR “N2O” OR “laughing gas” OR Entonox OR Equanox OR Kalinox OR Medimix OR “Dinitrogen Monoxide” | 925 |
#2 | (MH “Pregnancy”) OR (MH “Childbirth”) OR (MH “Labor”) OR (MH “Labor Pain”) OR “labor pain” OR pregnancy OR childbirth OR birth OR labour OR intrapartum OR (MH “Analgesia, Obstetrical”) OR (MH “Delivery”) | 100,226 |
#3 | #1 AND #2 | 90 |
#4 | #3 AND PT ( Commentary OR Editorial OR Letter OR Review ) | 21 |
#5 | #3 NOT #4 | 69 |
- Exact Search Strings and Results - Nitrous Oxide for the Management of Labor Pai...Exact Search Strings and Results - Nitrous Oxide for the Management of Labor Pain
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