Class information for:
Level 1: SPIROMETRY//COPD//LOWER LIMIT OF NORMAL

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
1215 2781 32.3 62%


Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
0 4 BIOCHEMISTRY & MOLECULAR BIOLOGY//CELL BIOLOGY//ONCOLOGY 4064930
54 3       ASTHMA//RESPIRATORY SYSTEM//ALLERGY 90590
206 2             CHRONIC OBSTRUCTIVE PULMONARY DISEASE//COPD//RESPIRATORY SYSTEM 21076
1215 1                   SPIROMETRY//COPD//LOWER LIMIT OF NORMAL 2781

Terms with highest relevance score


rank Term termType Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with term
in class
1 SPIROMETRY authKW 1746978 20% 29% 551
2 COPD authKW 338134 16% 7% 439
3 LOWER LIMIT OF NORMAL authKW 181470 1% 72% 23
4 CHRONIC OBSTRUCTIVE PULMONARY DISEASE authKW 170100 12% 5% 327
5 RESPIRATORY SYSTEM WoSSC 162557 62% 1% 1737
6 REFERENCE EQUATIONS authKW 161309 1% 57% 26
7 CHRONIC BRONCHITIS authKW 88336 3% 11% 75
8 PULMONARY FUNCTION TESTS authKW 88203 4% 8% 101
9 COPD PREVALENCE authKW 76847 0% 100% 7
10 FEV6 authKW 76847 0% 100% 7

Web of Science journal categories


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with term
in class
1 Respiratory System 162557 62% 1% 1737
2 Critical Care Medicine 13466 14% 0% 384
3 Primary Health Care 3733 4% 0% 104
4 Medicine, General & Internal 3269 17% 0% 473
5 Public, Environmental & Occupational Health 2115 12% 0% 345
6 Cardiac & Cardiovascular System 590 7% 0% 194
7 Health Care Sciences & Services 204 2% 0% 63
8 Geriatrics & Gerontology 174 2% 0% 45
9 Allergy 161 1% 0% 37
10 Gerontology 73 1% 0% 23

Address terms


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 SECT THORAC MED 39025 0% 44% 8
2 OLIN STUDIES 36844 1% 22% 15
3 PAEDIAT PULM DIS 29272 0% 67% 4
4 HOSP MACIEL 28093 0% 32% 8
5 UBC JAMES HOGG S 24699 0% 75% 3
6 PROGRAM EPIDEMIOL CLIN 24442 0% 32% 7
7 PORTEX P UNIT 24380 0% 22% 10
8 CAHPRI PUBL HLTH CARE 21956 0% 100% 2
9 PUBL HLTH CARE C HRI 21956 0% 100% 2
10 RECINTE HOSP JOAN MARCH 21956 0% 100% 2

Journals


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 COPD-JOURNAL OF CHRONIC OBSTRUCTIVE PULMONARY DISEASE 74815 2% 11% 65
2 INTERNATIONAL JOURNAL OF CHRONIC OBSTRUCTIVE PULMONARY DISEASE 72168 3% 8% 81
3 RESPIRATORY MEDICINE 65885 6% 3% 178
4 PRIMARY CARE RESPIRATORY JOURNAL 49550 1% 14% 33
5 EUROPEAN RESPIRATORY JOURNAL 38278 6% 2% 178
6 NPJ PRIMARY CARE RESPIRATORY MEDICINE 32164 1% 13% 22
7 CHEST 23530 8% 1% 213
8 AMERICAN REVIEW OF RESPIRATORY DISEASE 19526 4% 2% 105
9 RESPIROLOGY 19381 2% 3% 62
10 THORAX 16641 4% 1% 104

Author Key Words


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class		 LCSH search Wikipedia search
1 SPIROMETRY 1746978 20% 29% 551 Search SPIROMETRY Search SPIROMETRY
2 COPD 338134 16% 7% 439 Search COPD Search COPD
3 LOWER LIMIT OF NORMAL 181470 1% 72% 23 Search LOWER+LIMIT+OF+NORMAL Search LOWER+LIMIT+OF+NORMAL
4 CHRONIC OBSTRUCTIVE PULMONARY DISEASE 170100 12% 5% 327 Search CHRONIC+OBSTRUCTIVE+PULMONARY+DISEASE Search CHRONIC+OBSTRUCTIVE+PULMONARY+DISEASE
5 REFERENCE EQUATIONS 161309 1% 57% 26 Search REFERENCE+EQUATIONS Search REFERENCE+EQUATIONS
6 CHRONIC BRONCHITIS 88336 3% 11% 75 Search CHRONIC+BRONCHITIS Search CHRONIC+BRONCHITIS
7 PULMONARY FUNCTION TESTS 88203 4% 8% 101 Search PULMONARY+FUNCTION+TESTS Search PULMONARY+FUNCTION+TESTS
8 COPD PREVALENCE 76847 0% 100% 7 Search COPD+PREVALENCE Search COPD+PREVALENCE
9 FEV6 76847 0% 100% 7 Search FEV6 Search FEV6
10 AIRFLOW OBSTRUCTION 74597 1% 20% 34 Search AIRFLOW+OBSTRUCTION Search AIRFLOW+OBSTRUCTION

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.


Rank Reference # ref.
in cl.		 Shr. of ref. in
cl.		 Citations
1 ADELOYE, D , CHUA, S , LEE, CW , BASQUILL, C , PAPANA, A , THEODORATOU, E , NAIR, H , GASEVIC, D , SRIDHAR, D , CAMPBELL, H , ET AL (2015) GLOBAL AND REGIONAL ESTIMATES OF COPD PREVALENCE: SYSTEMATIC REVIEW AND META-ANALYSIS.JOURNAL OF GLOBAL HEALTH. VOL. 5. ISSUE 2. P. 186 -202 99 85% 8
2 QUANJER, PH , STANOJEVIC, S , COLE, TJ , BAUR, X , HALL, GL , CULVER, BH , ENRIGHT, PL , HANKINSON, JL , IP, MSM , ZHENG, JP , ET AL (2012) MULTI-ETHNIC REFERENCE VALUES FOR SPIROMETRY FOR THE 3-95-YR AGE RANGE: THE GLOBAL LUNG FUNCTION 2012 EQUATIONS.EUROPEAN RESPIRATORY JOURNAL. VOL. 40. ISSUE 6. P. 1324-1343 59 65% 434
3 TAFURO, F , CORRADI, M , MUTTI, A , (2014) INTERPRETATIVE STRATEGIES OF LUNG FUNCTION TESTS: OBSTRUCTIVE PATTERN.MEDICINA DEL LAVORO. VOL. 105. ISSUE 3. P. 197-213 69 84% 1
4 REDLICH, CA , TARLO, SM , HANKINSON, JL , TOWNSEND, MC , ESCHENBACHER, WL , VON ESSEN, SG , SIGSGAARD, T , WEISSMAN, DN , (2014) OFFICIAL AMERICAN THORACIC SOCIETY TECHNICAL STANDARDS: SPIROMETRY IN THE OCCUPATIONAL SETTING.AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE. VOL. 189. ISSUE 8. P. 984-994 64 78% 6
5 RYCROFT, CE , HEYES, A , LANZA, L , BECKER, K , (2012) EPIDEMIOLOGY OF CHRONIC OBSTRUCTIVE PULMONARY DISEASE: A LITERATURE REVIEW.INTERNATIONAL JOURNAL OF CHRONIC OBSTRUCTIVE PULMONARY DISEASE. VOL. 7. ISSUE . P. 457-494 62 63% 68
6 LEE, PN , FRY, JS , (2010) SYSTEMATIC REVIEW OF THE EVIDENCE RELATING FEV1 DECLINE TO GIVING UP SMOKING.BMC MEDICINE. VOL. 8. ISSUE . P. - 91 50% 38
7 FOREY, BA , THORNTON, AJ , LEE, PN , (2011) SYSTEMATIC REVIEW WITH META-ANALYSIS OF THE EPIDEMIOLOGICAL EVIDENCE RELATING SMOKING TO COPD, CHRONIC BRONCHITIS AND EMPHYSEMA.BMC PULMONARY MEDICINE. VOL. 11. ISSUE . P. - 85 46% 78
8 PELLEGRINO, R , VIEGI, G , BRUSASCO, V , CRAPO, RO , BURGOS, F , CASABURI, R , COATES, A , VAN DER GRINTEN, CPM , GUSTAFSSON, P , HANKINSON, J , ET AL (2005) INTERPRETATIVE STRATEGIES FOR LUNG FUNCTION TESTS.EUROPEAN RESPIRATORY JOURNAL. VOL. 26. ISSUE 5. P. 948 -968 49 43% 1879
9 LIOU, TG , KANNER, RE , (2009) SPIROMETRY.CLINICAL REVIEWS IN ALLERGY & IMMUNOLOGY. VOL. 37. ISSUE 3. P. 137-152 53 80% 3
10 LOPEZ-CAMPOS, JL , TAN, W , SORIANO, JB , (2016) GLOBAL BURDEN OF COPD.RESPIROLOGY. VOL. 21. ISSUE 1. P. 14 -23 36 56% 13

Classes with closest relation at Level 1


Rank Class id link
1 31646 CHILDHOOD RESPIRATORY INFECTION//CHILDHOOD RESPIRATORY INFECTIONS//CLIN MED D
2 10068 CHRONIC OBSTRUCTIVE PULMONARY DISEASE//COPD//CHRONIC SYSTEMIC INFLAMMATORY SYNDROME
3 2330 TIOTROPIUM//INDACATEROL//COPD
4 18695 COPD RELATED PHENOTYPES//FAM13A//CHRONIC OBSTRUCTIVE PULMONARY DISEASE
5 5994 EXACERBATION//CHRONIC OBSTRUCTIVE PULMONARY DISEASE//COPD
6 20067 ELDERLY ASTHMA//ASTHMA//ELDERLY ASTHMATICS
7 12823 PEAK EXPIRATORY FLOW//NOCTURNAL ASTHMA//PEAK FLOW METER
8 506 PULMONARY REHABILITATION//COPD//CHRONIC OBSTRUCTIVE PULMONARY DISEASE
9 22050 MAXIMAL EXPIRATORY FLOW VOLUME CURVE//FORCED EXPIRATION//MAXIMUM EXPIRATORY FLOW VOLUME
10 36660 AGING OF LYMPHOCYTES//ALCOHOL DRINKING AND ADVERSE EFFECT//CHRONIC OBSTRUCTIVE PULMONARY DISEASE MORTALITY

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