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Leas BF, D’Anci KE, Apter AJ, et al. Effectiveness of Indoor Allergen Reduction in Management of Asthma [Internet]. Rockville (MD): Agency for Healthcare Research and Quality (US); 2018 Feb. (Comparative Effectiveness Reviews, No. 201.)

Appendix ASearch Strategies

Resources Searched

ECRI Institute information specialists searched the following databases for relevant information. Search terms and strategies for each resource appear below.

Table A-1Databases searched

NameDate LimitsPlatform/Provider
The Cochrane Central Register of Controlled Trials (CENTRAL)Inception [1999] through April 21, 2017Wiley
The Cochrane Database of Systematic Reviews (Cochrane Reviews)Inception [1999] through April 21, 2017Wiley
Cumulative Index of Nursing and Allied Health Literature (CINAHL)Inception [1981] through April 21, 2017EBSCOhost
Database of Abstracts of Reviews of Effects (DARE) (part of the Cochrane Library)Inception [1999] through April 21, 2017Wiley
EMBASE (Excerpta Medica)Inception [1966] through April 21, 2017Embase.com
Health Technology Assessment Database (HTA) (part of the Cochrane Library)Inception [1999] through April 21, 2017Wiley
MEDLINEInception [1966] through April 21, 2017Embase.com
PUBMED (In Process citations)Inception [1966] through April 21, 2017NLM
U.K. National Health Service Economic Evaluation Database (NHS EED) (part of the Cochrane Library)Inception [1999] through April 21, 2017Wiley
Associations and Societies
American Academy of Allergy, Asthma, and ImmunologyJune 29, 2016https://www​.aaaai.org/
Asthma and Allergy Foundation of AmericaJune 30, 2016http://www​.aafa.org/
American Academy of PediatricsJune 30, 2016https://www​.aap.org
American College of Allergy, Asthma, and ImmunologyJune 29, 2016http://acaai​.org/
Agency for Healthcare Research and Quality Technology Assessment ProgramJune 29, 2016http://www​.ahrq.gov/research​/findings/ta/index.html
American Lung AssociationJune 29, 2016http://www​.lung.org/
American Public Health AssociationJune 29, 2016https://www​.apha.org/
American Thoracic SocietyJune 29, 2016https://www​.thoracic.org/
Centers for Disease Control and PreventionJune 28, 2016https://www​.cdc.gov/
Children’s Health Protection Advisory CommitteeJune 30, 2016https://www​.epa.gov/children​/childrens-health-protection-advisory-committee-chpac
Global Initiative for AsthmaJune 30, 2016http://ginasthma​.org/
National Center for Healthy HousingJune 30, 2016http://www​.nchh.org/
National Academy of MedicineJune 28, 2016https://nam​.edu/
National Environmental Education FoundationJune 30, 2016https://www​.neefusa.org/
National Heart, Lung, and Blood InstituteJune 30, 2016https://www​.nhlbi.nih.gov/
United States Environmental Protection AgencyJune 28, 2016https://www3​.epa.gov/
United States National Institute of Environmental Health SciencesJune 29, 2016http://www​.niehs.nih.gov/
Other Gray Literature Resources
ClinicalTrials.govSearched August 1, 2016NIH
Centers for Medicare and Medicaid (CMS) - Medicare Coverage DatabaseSearched August 2, 2016CMS
ECRI Institute Library CatalogSearched August 2, 2016ECRI Institute
ECRI Institute Members WebsiteSearched August 2, 2016ECRI Institute
Health DevicesSearched August 2, 2016ECRI Institute
Healthcare StandardsSearched August 1, 2016ECRI Institute
InternetSearched August 3, 2016Google; Bing
MedscapeSearched June 22, 2016WebMD
National Guideline Clearinghouse™Searched August 1, 2016AHRQ
National Institute for Health and Care Excellence, U.K.Searched August 1, 2016NHS
TRIP (Turning Research Into Practice) DatabaseSearched August 4, 2016Trip Database, Ltd.
U.S. Food and Drug Administration (FDA), including Medical Device databasesSearched August 1, 2016FDA

Reimbursement

The following Web sites were searched for reimbursement policies: Aetna, Anthem BCBS, BCBS Florida, BCBS of Illinois, BCBS of Texas, BCBS of California, CIGNA, Humana, United Healthcare, Regence.

Hand Searches of Journal and Gray Literature

Journals and supplements maintained in ECRI Institute’s collections were routinely reviewed. Nonjournal publications from professional organizations, private agencies, and government agencies were also screened. Other mechanisms used to retrieve additional relevant information included review of bibliographies/reference lists from peer-reviewed and gray literature. (Gray literature consists of reports, studies, articles, and monographs produced by federal and local government agencies, private organizations, educational facilities, consulting firms, and corporations. These documents do not appear in the peer-reviewed journal literature.)

Topic-Specific Search Terms

The search strategies employed combinations of free-text keywords as well as controlled vocabulary terms including (but not limited to) the following concepts. Strategies for each bibliographic database follow this table.

Table A-2Topic-specific search terms

ConceptControlled VocabularyKeywords
AsthmaEMBASE (EMTREE)
asthma/exp
‘allergic asthma’/exp
‘asthmatic state’/exp
‘extrinsic asthma’/exp
‘intrinsic asthma’/exp
‘mild intermittent asthma’/exp
‘mild persistent asthma’/exp
‘nocturnal asthma’/exp
‘occupational asthma’/exp
‘severe persistent asthma’/exp
MEDLINE/PubMed(MeSH)
Asthma[mh]
CINAHL
(MH “Asthma+”)
(MH “Asthma, Occupational”)
Asthma*
General Allergy termsEMBASE (EMTREE)
allergen/exp
‘disease exacerbation’/exp
‘environmental exposure’/exp
‘health hazard’/exp
MEDLINE/PubMed (MeSH)
Allergens[mh]
“environmental exposure”[mh]
CINAHL
(MH “Allergens+”)
(MH “Disease Exacerbation”)
(MH “Environmental Exposure+”)
Allergen
exacerbation
exacerbate
irritant
sensitive
sensitivity
trigger
Environmental and Household AllergensEMBASE (EMTREE)
‘airborne particle’/exp
cat/exp
cockroach/exp
dander/exp
dog/exp
dust/exp
household/exp
mite/exp
mould/exp
‘pest insect’/exp
‘pest organism’/exp
‘pest rodent’/exp
‘pet animal’/exp
MEDLINE/PubMed (MeSH)
“antigens, dermatophagoides”[mh]
cats[mh]
cockroaches[mh]
dander[mh]
“dermatophagoides farina”[mh]
“dermatophagoides pteronyssinus”[mh]
dogs[mh]
dust[mh]
fungi[mh]
mites[mh]
“mite infestations”[mh]
pets[mh]
“particulate matter”[mh]
CINAHL
(MH “Cats”)
(MH “Cockroaches”)
(MH “Dogs”)
(MH “Dust”)
(MH “Fungi+”)
(MH “Mites”)
(MH “Pets”)
apartment
cat
cats
chalk
cockroach
damp
dander
dermatophagoides
daycare
dog
dogs
dust
dust mites
fungus
fungi
home
house
housing
housedust
indoor
insect
mice
mite
mites
moisture
mold
moldy
mould
mouldy
mouse
pet
pets
pest
pests
residence
residential
roach
rodent
school
Environmental InterventionsEMBASE (EMTREE)
‘air filter’/exp
bed/exp
cleaning/exp
‘environmental sanitation’/exp
‘risk reduction’/exp
vacuum/exp
‘pests and pest control’/exp
‘pest control’/exp
‘indoor residual spraying’/exp
MEDLINE/PubMed (MeSH)
“air filters”[mh]
beds[mh]
housekeeping[mh]
“insect control”[mh]
sanitation[mh]
vacuum[mh]
“pest control”[mh]
“rodent control”[mh]
ventilation[mh]
CINAHL
(MH “Air Filters”)
(MH “Beds and Mattresses+”)
(MH “Home Maintenance”)
(MH “Pest Control”)
(MH “Sanitation+”)
(MH “Vacuum”)
(MH “Ventilation+”)
air filter
air filtration
air purification
allergen reduction
bath
bathe
bathing
bed
beds
bedding
clean
cleaning
comforter
cover
covering
covers
dehumidifier
dehumidify
duct cleaning
duvet
encase
exterminate
fabric
feather
futon
HEPA
high efficiency particulate arrestance
hypoallergenic
insulation
launder
laundering
laundry
linen
mattress
pet removal
pet bathing
pillow
reduce
sanitation
sanitize
sheet
spray
spraying
sun
sunlight
remove
removal
vacuum
ventilation
wash
washing
wipe
wiping
Carpet/FlooringEMBASE (EMTREE)
building/exp
MEDLINE/PubMed (MeSH)
“Floors and floorcoverings”[mh]
CINAHL
(MH “Floors and Floorcoverings”)
carpet*
floor*
rug
rugs
wood*

Search Strategies

Embase/Medline

Table A-3Embase/MEDLINE

Set NumberConceptSearch Statement
1Asthmaasthma/exp OR ‘allergic asthma’/exp OR ‘asthmatic state’/exp OR ‘extrinsic asthma’/exp OR ‘intrinsic asthma’/exp OR ‘mild intermittent asthma’/exp OR ‘mild persistent asthma’/exp OR ‘nocturnal asthma’/exp OR ‘occupational asthma’/exp OR ‘severe persistent asthma’/exp OR asthma*:ti,ab,de
2Environmental Allergens((‘allergen’/exp OR ‘environmental exposure’/exp OR ‘health hazard’/exp OR ‘disease exacerbation’/exp OR allerg* OR irritant* OR trigger* OR exacerbat* OR sensitiv*) AND (‘airborne particle’/exp OR ‘cat’/exp OR ‘cockroach’/exp OR ‘dander’/exp OR ‘dog’/exp OR ‘dust’/exp OR ‘household’/exp OR ‘mite’/exp OR ‘mould’/exp OR ‘pest insect’/exp OR ‘pest organism’/exp OR ‘pest rodent’/exp OR ‘pet animal’/exp OR cat OR cats OR cockroach* OR housedust* OR roach* OR damp* OR dander OR dermatophagoide* OR daycare OR dog OR dogs OR dust* OR home* OR house* OR indoor* OR insect* OR mite OR mites OR mold OR mould OR moldy OR mouldy OR mouse OR mice OR pet OR pets OR pest OR pests OR rodent* OR school* OR moist* OR fungus OR fungi OR chalk*))
Household AllergensOR
((‘household’/exp OR daycare OR home* OR house* OR indoor* OR residence OR residential OR apartment* OR housing) AND (‘airborne particle’/exp OR ‘cat’/exp OR ‘cockroach’/exp OR ‘dander’/exp OR ‘dog’/exp OR ‘dust’/exp OR ‘mite’/exp OR ‘mould’/exp OR ‘pest insect’/exp OR ‘pest organism’/exp OR ‘pest rodent’/exp OR ‘pet animal’/exp OR cat OR cats OR cockroach* OR housedust* OR roach* OR damp* OR dander OR dermatophagoide* OR dog OR dogs OR dust* OR insect* OR mite OR mites OR mold OR mould OR moldy OR mouldy OR mouse OR mice OR pet OR pets OR pest OR pests OR rodent* OR school* OR moist* OR fungus OR fungi OR chalk*))
3Environmental Interventions(‘air filter’/exp OR bed/exp OR cleaning/exp OR ‘environmental sanitation’/exp OR vacuum/exp OR ‘pests and pest control’/exp OR ‘pest control’/exp OR ‘indoor residual spraying’/exp) OR (air NEAR/2 (clean* OR filter* OR filtrat* OR purif*)) OR ventilat* OR insulat* OR (duct* NEAR/2 clean*) OR dehumid* OR bed OR beds OR bedding OR futon* OR clean* OR comforter* OR cover OR covers OR covering* OR duvet* OR encase* OR feather* OR linen* OR fabric OR pillow* OR mattress* OR sanita* OR sanitis* OR sanitiz* OR sheet* OR vacuum* OR sun OR sunlight* OR hypoallergenic OR remove OR removal OR bath* OR exterminat* OR spray* OR ((allergen OR pet OR pets OR pest*) NEAR/5 (reduc* OR avoid* OR eliminat*)) OR wipe OR wiping OR launder OR laundering OR laundry OR hepa OR ‘high-efficiency particulate arrestance’ OR ‘high efficiency particulate arrestance’ OR wash OR washing
4Carpet/Flooring Removalbuilding/exp OR (carpet* OR floor* OR rug OR rugs OR wood*):ab,ti,de
5Combine sets1 AND 2 AND 3
6Combine sets1 AND 4
7Combine sets5 OR 6
8Remove unwanted publication types7 NOT (abstract:nc OR annual:nc OR book/de OR ‘case report’/de OR ‘case study’/de OR conference:nc OR ‘conference abstract’:it OR ‘conference paper’/de OR ‘conference paper’:it OR ‘conference proceeding’:pt OR ‘conference review’:it OR congress:nc OR editorial/de OR editorial:it OR erratum/de OR letter:it OR note/de OR note:it OR meeting:nc OR sessions:nc OR ‘short survey’/de OR symposium:nc)
9Controlled study filter8 AND (‘randomized controlled trial’/exp OR ‘randomized controlled trial’ OR ‘randomization’/exp OR ‘randomization’ OR ‘double blind procedure’/exp OR ‘double blind procedure’ OR ‘single blind procedure’/exp OR ‘single blind procedure’ OR ‘placebo’/exp OR ‘placebo’ OR ‘latin square design’/exp OR ‘latin square design’ OR ‘crossover procedure’/exp OR ‘crossover procedure’ OR ‘triple blind procedure’/exp OR ‘triple blind procedure’ OR ‘controlled study’/exp OR ‘controlled study’ OR ‘clinical trial’/exp OR ‘clinical trial’ OR ‘comparative study’/exp OR ‘comparative study’ OR ‘cohort analysis’/exp OR ‘cohort analysis’ OR ‘follow up’/exp OR ‘follow up’ OR ‘intermethod comparison’/exp OR ‘intermethod comparison’ OR ‘parallel design’/exp OR ‘parallel design’ OR ‘control group’/exp OR ‘control group’ OR ‘prospective study’/exp OR ‘prospective study’ OR ‘retrospective study’/exp OR ‘retrospective study’ OR ‘case control study’/exp OR ‘case control study’ OR ‘major clinical study’/exp OR ‘major clinical study’ OR ‘evaluation study’/exp OR ‘evaluation study’ OR random*:de OR random*:ti OR placebo* OR (singl* OR doubl* OR tripl* OR trebl* AND (dummy OR ‘blind’/exp OR blind OR sham)) OR ‘latin square’ OR isrctn* OR actrn* OR (nct* NOT nct))
10Systematic Review/Meta-analysis filter8 AND (‘research synthesis’ OR pooled OR ‘systematic review’/exp OR ‘systematic review’ OR ‘meta analysis’/exp OR ‘meta analysis’ OR ((‘evidence base’ OR ‘evidence based’/exp OR ‘evidence based’ OR methodol* OR systematic OR quantitative* OR studies OR search*) AND (‘review’/exp OR ‘review’ OR ‘review’/it)))
11Combine Sets9 OR 10
12Apply Limits11 AND (‘human’/de OR [adolescent]/lim OR [adult]/lim OR [aged]/lim OR [child]/lim OR [infant]/lim OR [middle aged]/lim OR [newborn]/lim OR [preschool]/lim OR [school]/lim OR [very elderly]/lim OR [young adult]/lim)

EMBASE.com Syntax

*=truncation character (wildcard)
NEAR/n=search terms within a specified number (n) of words from each other in any order
NEXT/n=search terms within a specified number (n) of words from each other in the order specified
/=search as a subject heading
exp=“explodes” controlled vocabulary term (e.g., expands search to all more specific related terms in the vocabulary’s hierarchy)
mj=denotes a term that has been searched as a major subject heading
:de=search in the descriptors field (controlled terms and keywords)
:lnk=floating subheading
/lim=limiter
:it,pt.=source item or publication type
:ti.=limit to title
:ti,ab.=limit to title and abstract fields

PubMed (PreMEDLINE)

Table A-4PubMed in process citations

Set NumberConceptSearch Statement
1Asthma[mh] OR asthma*Asthma[mh] OR asthma*
2Environmental Allergens(“Allergens”[Mesh] OR “Environmental Exposure”[Mesh] OR allerg*[tiab] OR irritant*[tiab] OR trigger*[tiab] OR exacerbat*[tiab] OR sensitiv*[tiab]) AND (“Particulate Matter”[Mesh] OR “Cats”[Mesh] OR “Dander”[Mesh] OR “Dogs”[Mesh] OR “Cockroaches”[Mesh] OR “Dust”[Mesh] OR “Antigens, Dermatophagoides”[Mesh] OR “Dermatophagoides pteronyssinus”[Mesh] OR “Dermatophagoides farinae”[Mesh] OR “Mites”[Mesh] OR “Mite Infestations”[Mesh] OR “Fungi”[Mesh] OR “Pets”[Mesh] OR cat[tiab] OR cats[tiab] OR cockroach*[tiab] OR housedust*[tiab] OR roach*[tiab] OR damp*[tiab] OR dander[tiab] OR dermatophagoide*[tiab] OR daycare[tiab] OR dog[tiab] OR dogs[tiab] OR dust*[tiab] OR home*[tiab] OR house*[tiab] OR indoor*[tiab] OR insect*[tiab] OR mite[tiab] OR mites[tiab] OR mold[tiab] OR mould[tiab] OR moldy[tiab] OR mouldy[tiab] OR mouse[tiab] OR mice[tiab] OR pet[tiab] OR pets[tiab] OR pest[tiab] OR pests[tiab] OR rodent*[tiab] OR school*[tiab] OR moist*[tiab] OR fungus[tiab] OR fungi[tiab] OR chalk*[tiab])
Household AllergensOR
(daycare OR home* OR house* OR indoor* OR residence OR residential OR apartment* OR housing) AND(“Particulate Matter”[Mesh] OR “Cats”[Mesh] OR “Dander”[Mesh] OR “Dogs”[Mesh] OR “Cockroaches”[Mesh] OR “Dust”[Mesh] OR “Antigens, Dermatophagoides”[Mesh] OR “Dermatophagoides pteronyssinus”[Mesh] OR “Dermatophagoides farinae”[Mesh] OR “Mites”[Mesh] OR “Mite Infestations”[Mesh] OR “Fungi”[Mesh] OR “Pets”[Mesh] OR cat[tiab] OR cats[tiab] OR cockroach*[tiab] OR housedust*[tiab] OR roach*[tiab] OR damp*[tiab] OR dander[tiab] OR dermatophagoide*[tiab] OR dog[tiab] OR dogs[tiab] OR dust*[tiab] OR insect*[tiab] OR mite[tiab] OR mites[tiab] OR mold[tiab] OR mould[tiab] OR moldy[tiab] OR mouldy[tiab] OR mouse[tiab] OR mice[tiab] OR pet[tiab] OR pets[tiab] OR pest[tiab] OR pests[tiab] OR rodent*[tiab] OR school*[tiab] OR moist*[tiab] OR fungus[tiab] OR fungi[tiab] OR chalk*[tiab])
3Environmental Interventions“Air Filters”[Mesh] OR “Beds”[Mesh] OR “Housekeeping”[Mesh] OR “Sanitation”[Mesh] OR “Vacuum”[Mesh] OR “Pest Control”[Mesh] OR “Insect Control”[Mesh] OR “Rodent Control”[Mesh] OR ventilation[Mesh] OR (air[tiab] AND (clean*[tiab] OR filter*[tiab] OR filtrat*[tiab] OR purif*[tiab])) OR ventilat*[tiab] OR insulat*[tiab] OR (duct*[tiab] AND clean*[tiab]) OR dehumid*[tiab] OR bed*[tiab] OR futon*[tiab] OR clean*[tiab] OR comforter*[tiab] OR cover[tiab] OR covers[tiab] OR covering*[tiab] OR duvet*[tiab] OR encase*[tiab] OR feather*[tiab] OR linen*[tiab] OR fabric[tiab] OR pillow*[tiab] OR mattress*[tiab] OR sanita*[tiab] OR sanitis*[tiab] OR sanitiz*[tiab] OR sheet*[tiab] OR vacuum*[tiab] OR hypoallergenic*[tiab] OR exterminat*[tiab] OR spray*[tiab] OR sun[tiab] [tiab] OR sunlight*[tiab] OR bath*[tiab] OR ((allergen*[tiab] OR pet[tiab] OR pets[tiab] OR pest*[tiab]) AND (reduc*[tiab] OR avoid*[tiab] OR eliminat*[tiab] OR remove OR removal)) OR wipe[tiab] OR wiping[tiab] OR launder[tiab] OR laundering[tiab] OR laundry[tiab] OR hepa[tiab] OR ‘high-efficiency particulate arrestance’[tiab] OR ‘high efficiency particulate arrestance’[tiab] OR wash[tiab] OR washing[tiab]
4Carpet/Flooring removal“Floors and Floorcoverings”[Mesh] OR (carpet*[tiab] OR floor*[tiab] OR rug[tiab] OR rugs[tiab] OR wood*[tiab])
5Combine sets1 AND 2 AND 3
6Combine sets1 AND 4
7Combine sets5 OR 6
8Remove unwanted publication types7 NOT (case reports[pt] OR comment[pt] OR editorial[pt] OR letter[pt] OR news[pt] OR “Textbooks” [pt] OR “Book Reviews”[pt]OR “Book Illustrations”[pt] OR book OR books OR textbook*)
9In process citations8 AND (“inprocess”[sb] OR publisher[sb] OR pubmednotmedline[sb])

PubMed Syntax

*=truncation character (wildcard)
[mh]/[MesH]=controlled vocabulary term
[sb]=subset
[ti]=limit to title field
[tiab]=limit to title and abstract fields
[tw]=text word

CINAHL

English language, human, exclude MEDLINE records

Table A-5CINAHL

Set NumberConceptSearch Statement
1Asthma(MH “Asthma+”) OR (MH “Asthma, Occupational”) OR asthma*
2Household allergens((MH “Allergens+”) OR (MH “Disease Exacerbation”) OR (MH “Environmental Exposure+”) OR allerg* OR irritant* OR trigger* OR exacerbat* OR sensitiv*) AND ((MH “Dogs”) OR (MH “Cats”) OR (MH “Pets”) OR (MH “Cockroaches”) OR (MH “Dust”) OR (MH “Mites”) OR (MH “Fungi+”) OR cat OR cats OR cockroach* OR housedust* OR roach* OR damp* OR dander OR dermatophagoide* OR daycare OR dog OR dogs OR dust* OR home* OR house* OR indoor* OR insect* OR mite OR mites OR mold OR mould OR moldy OR mouldy OR mouse OR mice OR pet OR pets OR pest OR pests OR rodent* OR school* OR moist* OR fungus OR fungi OR chalk*)
3Environmental Interventions/Household Allergens((MH “Air Filters”) OR (MH “Beds and Mattresses+”) OR (MH “Home Maintenance”) OR (MH “Sanitation+”) OR (MH “Vacuum”) OR (MH “Pest Control”) OR (MH “Ventilation+”) OR (air AND (clean* OR filter* OR filtrat* OR purif*)) OR ventilat* OR insulat* OR (duct* AND clean*) OR dehumid* OR bed OR beds OR bedding OR futon* OR clean* OR comforter* OR cover OR covers OR covering* OR duvet* OR encase* OR feather* OR linen* OR fabric OR pillow* OR mattress* OR sanita* OR sanitis* OR sanitiz* OR sheet* OR vacuum* OR sun OR sunlight* OR hypoallergenic OR remove OR removal OR bath* OR exterminat* OR spray* OR ((allergen OR pet OR pets OR pest*) AND (reduc* OR avoid* OR eliminat*)) OR wipe OR wiping OR launder OR laundering OR laundry OR hepa OR “high-efficiency particulate arrestance” OR “high efficiency particulate arrestance” OR wash OR washing
4Carpet/Flooring Removal(MH “Floors and Floorcoverings”) OR carpet* OR floor* OR rug OR rugs OR wood*
5Combine sets Key Question 11 AND 2 AND 3
6Combine sets Key Question 21 AND 4
7Combine sets Key Question 1 OR Key Question 25 OR 6
8Remove Medline records/limit to academic journals

CINAHL Syntax

…+=explode
*=truncation character (wildcard)
Nn=search terms within a specified number (n) of words from each other in any order
TI=limit to title field
AB=limit to title and abstract fields
MH=MeSH heading
MJ=MeSH heading designated as major topic
PT=publication type