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Papers

Secular trend in the occurrence of asthma among children and young adults: critical appraisal of repeated cross sectional surveys

BMJ 1997; 314 doi: https://doi.org/10.1136/bmj.314.7097.1795 (Published 21 June 1997) Cite this as: BMJ 1997;314:1795

Article usage

Article metrics provide readers and authors with an indication of how often a specific article has been accessed month by month. It counts three formats - abstract/extract, full text and pdf. The page is updated each day.

Usage statistics: July 2003 to August 2019

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AbstractFullPdf
Jul 200322480
Aug 200316560
Sep 200311290
Oct 200316330
Nov 200325590
Dec 200315410
Jan 200422290
Feb 200417380
Mar 200414580
Apr 200413540
May 200428790
Jun 200420810
Jul 200421780
Aug 200429470
Sep 200435870
Oct 200419500
Nov 200429890
Dec 200450780
Jan 200538590
Feb 200529880
Mar 200547690
Apr 200513600
May 200531570
Jun 200518540
Jul 20058210
Aug 200514520
Sep 20056590
Oct 200518640
Nov 200518690
Dec 200513510
Jan 200619460
Feb 200611421
Mar 200619710
Apr 200630490
May 200612360
Jun 200614400
Jul 200610240
Aug 20066360
Sep 20067320
Oct 200621500
Nov 200615320
Dec 200623390
Jan 200712220
Feb 200710390
Mar 200719330
Apr 200746300
May 200730410
Jun 200725240
Jul 200716250
Aug 200720170
Sep 200738250
Oct 200744370
Nov 200732390
Dec 20071590
Jan 200821330
Feb 200827180
Mar 200818210
Apr 200810200
May 20086370
Jun 20086380
Jul 20088460
Aug 20084400
Sep 200818260
Oct 200827350
Nov 200837350
Dec 200821200
Jan 200922200
Feb 200929230
Mar 200953270
Apr 200965100
May 200938240
Jun 200937330
Jul 200931140
Aug 200936270
Sep 200931150
Oct 200937300
Nov 200944320
Dec 200937140
Jan 201031200
Feb 201029270
Mar 201081290
Apr 201064320
May 201036460
Jun 201030430
Jul 201021280
Aug 201030190
Sep 201037260
Oct 201035410
Nov 201031210
Dec 201023200
Jan 201129230
Feb 201137240
Mar 201146280
Apr 201133360
May 201129190
Jun 201146300
Jul 201125120
Aug 201140170
Sep 201130140
Oct 201147360
Nov 201111430
Dec 20110260
Jan 20120300
Feb 20120380
Mar 20120640
Apr 20120540
May 201243180
Jun 20127230
Jul 20124300
Aug 201226360
Sep 20123550
Oct 20121470
Nov 20121730
Dec 20120320
Jan 20130160
Feb 20130160
Mar 20130260
Apr 2013170
May 20130200
Jun 20130190
Jul 20131280
Aug 2013170
Sep 20131180
Oct 20130230
Nov 20130190
Dec 20130220
Jan 20140180
Feb 20140310
Mar 20141300
Apr 20143470
May 20140530
Jun 20140420
Jul 20140380
Aug 20140240
Sep 20140290
Oct 20141150
Nov 20141350
Dec 20140510
Jan 20150400
Feb 20150260
Mar 20153630
Apr 20150470
May 20152380
Jun 20150301
Jul 20151250
Aug 20150350
Sep 20151280
Oct 20150450
Nov 20150410
Dec 20152410
Jan 20160390
Feb 20163660
Mar 20160420
Apr 20162510
May 20162530
Jun 20160360
Jul 20160210
Aug 20161330
Sep 20160540
Oct 20161360
Nov 20163400
Dec 20162210
Jan 20170240
Feb 20170350
Mar 20170410
Apr 20170420
May 20170390
Jun 20170330
Jul 20170390
Aug 20170440
Sep 20170340
Oct 20170550
Nov 20170450
Dec 20170960
Jan 201801220
Feb 20180330
Mar 20180450
Apr 20180500
May 20180370
Jun 20180240
Jul 20180230
Aug 20180350
Sep 20180260
Oct 20180290
Nov 20181730
Dec 20180520
Jan 20190410
Feb 20190390
Mar 20191390
Apr 20190260
May 20191280
Jun 20190260
Jul 20190460
Aug 20190400
Total275473192