# ▼	Searches	Results
1	(childhood mortality/ or fetus mortality/ or infant mortality/ or maternal mortality/ or exp perinatal mortality/ or prenatal mortality/) and medical audit/	682
2	(pregnant woman/ or child/ or exp infant/ or preschool child/ or toddler/) and ("cause of death"/ or Mortality/) and medical audit/	449
3	((*pregnancy complication/ and (*"cause of death"/ or *mortality/)) or *child death/ or *newborn death/ or *sudden infant death syndrome/ or exp *fetus death/) and medical audit/	90
4	((maternal or mother* or maternity or child* or infan* or p?ediatric* or fetal or foetal or perinatal or pregnan* or childbirth or birth or labo?r) adj3 (mortality or death?)).ti,ab. and medical audit/	794
5	(stillbirth? or sudden infant death? or sids or cot death? or crib death?).ti,ab. and medical audit/	187
6	(*childhood mortality/ or *fetus mortality/ or *infant mortality/ or *maternal mortality/ or exp *perinatal mortality/ or *prenatal mortality/) and (review* or audit* or meeting? or enquir* or inquir*).ti,ab.	2838
7	(pregnant woman/ or child/ or exp infant/ or preschool child/ or toddler/) and (*"cause of death"/ or *Mortality/) and (review* or audit* or meeting? or enquir* or inquir*).ti,ab.	1156
8	((*pregnancy complication/ and (*"cause of death"/ or *mortality/)) or *child death/ or *newborn death/ or *sudden infant death syndrome/ or exp *fetus death/) and (review* or audit* or meeting? or enquir* or inquir*).ti,ab.	2084
9	(((death? or mortality) adj3 (review* or audit* or meeting? or enquir* or inquir*)) and (maternal or mother* or maternity or child* or infan* or p?ediatric* or fetal or foetal or perinatal or pregnan* or childbirth or birth or labo?r)).ti,ab.	2867
10	((stillbirth? or sudden infant death? or sids or cot death? or crib death?) adj5 (review* or audit* or meeting? or enquir* or inquir*)).ti,ab.	496
11	((confidential enquir* or confidential inquir*) and ((maternal or mother* or maternity or child* or infan* or p?ediatric* or fetal or foetal or perinatal or pregnan* or childbirth or birth or labo?r) adj3 (mortality or death?))).ti,ab.	551
12	((confidential enquir* or confidential inquir*) and (stillbirth? or sudden infant death? or sids or cot death? or crib death?)).ti,ab.	85
13	(cemach or cmace or cemd or cmde).ti,ab.	318
14	(saving mothers lives or making pregnancy safer or making childbirth safer).ti,ab.	71
15	((verbal autops* or social autops*) adj5 (maternal or mother* or maternity or child* or infan* or p?ediatric* or fetal or foetal or perinatal or pregnan* or childbirth or birth or labo?r)).ti,ab.	138
16	((near miss* or significant event* or critical event* or critical incident?) and (maternal or mother* or maternity or child* or infan* or p?ediatric* or fetal or foetal or perinatal or pregnan* or childbirth or birth or labo?r) and (review* or audit* or meeting? or enquir* or inquir*)).ti,ab.	570
17	1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15 or 16	9225
18	(editorial or letter or note or "review").pt. or cochrane database of systematic reviews.jn. or (systematic review or literature review).ti.	4,703,611
19	17 not 18	7115
20	randomized controlled trial/	496,811
21	controlled clinical trial/	459,202
22	single blind procedure/ or double blind procedure/	177,789
23	crossover procedure/	55,009
24	random*.tw.	1,289,179
25	placebo*.tw.	272,054
26	((singl* or doubl*) adj (blind* or mask*)).tw.	211,276
27	(crossover or cross over or factorial* or latin square).tw.	127,797
28	(assign* or allocat* or volunteer*).tw.	677,956
29	20 or 21 or 22 or 23 or 24 or 25 or 26 or 27 or 28	2,128,969
30	19 and 29	498
31	clinical trial/	968,030
32	multicenter study/	181,820
33	(randomis* or randomiz*).ti,ab.	757,379
34	(trial or multicenter or multi center or multicentre or multi centre).ti.	297,401
35	(intervention? or effect? or impact? or controlled or control group? or (before adj5 after) or (pre adj5 post) or ((pretest or pre test) and (posttest or post test)) or quasiexperiment* or quasi experiment* or evaluat* or time series or time point? or repeated measur*).ti,ab.	10,710,433
36	31 or 32 or 33 or 34 or 35	11,251,708
37	36 not 29	9,568,756
38	19 and 37	2578
39	health economics/ or pharmacoeconomics/	43,371
40	exp health care costs/	260,766
41	exp economic evaluation/	271,749
42	quality adjusted life year/	20,849
43	economics/ or economic aspect/	333,969
44	economic evaluation*.ti,ab.	13,630
45	(Cost* adj2 (Effective* or analysis* or Utility* or Benefit* or Minimi*)).ti,ab.	188,360
46	(pharmacoeconomic* or pharmaco‐economic*).ti,ab.	7843
47	economic*.ti.	51,747
48	("Value of life" or "quality adjusted life year*" or qaly* or qald* or qale* or "disability adjusted life year*" or daly).ti,ab.	23,054
49	(sf6 or short form 6 or shortform6 or euroqol or euro quality of life or eq5d or eq‐5d).ti,ab.	16,536
50	(hye or health* year equivalent*).ti,ab.	107
51	(health utilit* or disutilit*).ti,ab.	3308
52	"willingness to pay".ti,ab.	6465
53	standard gamble.ti,ab.	994
54	(time trade off or time tradeoff or tto).ti,ab.	2290
55	(vas or visual analog*).ti,ab.	97,572
56	((economic adj2 model*) or markov or monte carlo method).ti,ab.	29,329
57	(decision* adj (tree* or model* or analysis)).ti,ab.	17,213
58	(resource* adj (use* or utilisation)).ti,ab.	14,022
59	((healthcare or health care or direct service or hospital or drug*) adj cost*).ti,ab.	46,977
60	39 or 40 or 41 or 42 or 43 or 44 or 45 or 46 or 47 or 48 or 49 or 50 or 51 or 52 or 53 or 54 or 55 or 56 or 57 or 58 or 59	978,150
61	60 not (29 or 36)	556,447
62	19 and 61	86
63	30 or 38 or 62	3162