CINAHL

#	Query	Limiters/Expanders	Results
S1	(MH “Cesarean Section+”)	Search modes – Boolean/Phrase	8,916
S2	(cesarean section∗ caesarean section or c-section∗ or c section∗ or abdominal deliver∗)	Search modes – Boolean/Phrase	507
S3	S1 OR S2	Search modes – Boolean/Phrase	9,179
S4	(MH “Consumer Satisfaction+”)	Search modes – Boolean/Phrase	36,727
S5	(MH “Patient Attitudes”)	Search modes – Boolean/Phrase	21,200
S6	(MH “Consumer Attitudes”)	Search modes – Boolean/Phrase	3,466
S7	(MH “Attitude to Health+”)	Search modes – Boolean/Phrase	81,778
S8	(MH “Decision Making+”)	Search modes – Boolean/Phrase	57,927
S9	(MH “Health Services Needs and Demand+”)	Search modes – Boolean/Phrase	14,399
S10	(MH “Motivation+”)	Search modes – Boolean/Phrase	45,696
S11	(prefer∗ or satisf∗ or request∗) N4 (Women∗ or woman∗ or patient∗ or matern∗ or mother∗)	Search modes – Boolean/Phrase	39,793
S12	((birth∗ or deliver∗ or cesarean∗ or caesarean∗ or c-section∗ or c section∗ or maternal) N3 prefer∗)	Search modes – Boolean/Phrase	370
S13	(MH “Risk Factors+”)	Search modes – Boolean/Phrase	94,761
S14	(risk∗ N4 (factor∗ or relativ∗ or assess∗ or ratio∗))	Search modes – Boolean/Phrase	247,170
S15	(MH “Unnecessary Procedures”)	Search modes – Boolean/Phrase	1,204
S16	S4 OR S5 OR S6 OR S7 OR S8 OR S9 OR S10 OR S11 OR S12 OR S13 OR S14 OR S15	Search modes – Boolean/Phrase	455,562
S17	S3 AND S16	Search modes – Boolean/Phrase	2,323
S18	(MH “Meta Analysis”) or (MH “Systematic Review”)	Search modes – Boolean/Phrase	28,113
S19	((health technology N2 assess∗) or meta analy∗ or metaanaly∗ or pooled analysis or (systematic∗ N2 review∗) or published studies or medline or embase or data synthesis or data extraction or cochrane)	Search modes – Boolean/Phrase	64,316
S20	S18 OR S19	Search modes – Boolean/Phrase	64,316
S21	S17 AND S20	Search modes – Boolean/Phrase	137
S22	S17 AND S20	Limiters – Published Date from: 20080101–20131231; English Language Search modes – Boolean/Phrase	79