#	Searches	Results
1	exp Adrenal Cortex Hormones/	417823
2	exp Steroids/	904908
3	(adrenal cortex hormone* or adrenal cortical hormone* or adrenocorticosteroid* or adrenocortical hormone* or becotide or beclomethasone or betamethasone or budenosid* or corticoid? or corticosteroid* or dexamethason* or flixotid* or fluticason* or glucocorticoid* or hydrocortison* or methylprednisolon* or prednisolon* or pulmicort or steroid*).mp.	713253
4	or/1‐3 [Steroids]	1216979
5	Administration, Inhalation/	33429
6	exp Aerosols/	35335
7	exp "nebulizers and vaporizers"/ or metered dose inhalers/ or inhalation spacers/	12500
8	(aerosol* or aeroliz* or aerolis* or inhal* or nebulis* or nebuliz* or vapori* or ((vapor? or vapour?) adj2 therap*)).mp.	237515
9	or/5‐8 [Inhalation ‐‐administration]	238276
10	exp Infant, Newborn/ or Intensive Care, Neonatal/ or Intensive Care Units, Neonatal/ or Gestational Age/	708315
11	(babe or babes or baby* or babies or gestational age? or infant? or infantile or infancy or low birth weight or low birthweight or neonat* or neo‐nat* or newborn* or new born? or newly born or premature or pre‐mature or pre‐matures or prematures or prematurity or pre‐maturity or preterm or preterms or pre term? or preemie or preemies or premies or premie or VLBW or VLBWI or VLBW‐I or VLBWs or LBW or LBWI or LBWs or ELBW or ELBWI or ELBWs or NICU or NICUs).ti,ab,kw,kf.	1007889
12	or/10‐11 [Filter: Neonatal Population 04‐2022‐MEDLINE]	1317487
13	randomized controlled trial.pt.	575980
14	controlled clinical trial.pt.	95010
15	randomized.ti,ab.	623063
16	placebo.ti,ab.	237532
17	drug therapy.fs.	2525004
18	randomly.ti,ab.	391215
19	trial.ti,ab.	713575
20	groups.ti,ab.	2428639
21	or/13‐20 [Cochrane HSSS‐SM Filter; Box 6.4.a Cochrane Handbook]	5514162
22	(quasirandom* or quasi‐random* or randomi* or randomly).ti,ab,kw,kf.	1064289
23	(control* adj2 (group? or random* or trial? or study)).ti,ab,kw,kf.	1060436
24	or/22‐23 [Additional terms to increase sensitivity]	1645861
25	exp animals/ not humans/	5041586
26	(or/21,24) not 25 [RCT Filter: Medline]	5056374
27	meta‐analysis/ or "systematic review"/ or network meta‐analysis/ [/ finds same as.pt. syntax]	284592
28	((systematic* adj3 (review* or overview*)) or (methodologic* adj3 (review* or overview*))).ti,ab,kf,kw.	282815
29	((integrative adj3 (review* or overview*)) or (collaborative adj3 (review* or overview*)) or (pool* adj3 analy*)).ti,ab,kf,kw.	35637
30	(data synthes* or data extraction* or data abstraction*).ti,ab,kf,kw.	36584
31	(hand search* or handsearch*).ti,ab,kf,kw.	10647
32	(mantel haenszel or peto or der simonian or dersimonian or fixed effect* or latin square*).ti,ab,kf,kw.	32988
33	meta‐analysis as topic/ or network meta‐analysis/	25531
34	(meta analy* or metanaly* or meta regression* or metaregression*).ti,ab,kf,kw.	246611
35	(medline or cochrane or pubmed or medlars or embase or cinahl).ab.	301086
36	(cochrane or systematic review?).jw.	19451
37	or/27‐36 [SR filter‐Medline; based on CADTH https://searchfilters.cadth.ca]	568750
38	4 and 9 and 12 [Steroids AND Inhalation‐‐Administration AND Neonate]	1682
39	38 and 37 and 202*.yr. [Systematic Review Results 2020‐]	21
40	38 and 26 [RCT Results]	1031
41	40 and (2017* or 2018* or 2019* or 202*).yr. [RCT Results 2017‐]	172