title: Consensus statement on epidemiological studies of medical conditions in tennis, April 2009.
abstract: BACKGROUND
  The reported incidence, severity and nature of injuries sustained in tennis vary considerably between studies. While some of these variations can be explained by differences in sample populations and conditions, the main reasons are related to differences in definitions and methodologies employed in the studies.
  
  
  OBJECTIVE
  This statement aims to review existing consensus statements for injury surveillance in other sports in order to establish definitions, methods and reporting procedures that are applicable to the specific requirements of tennis.
  
  
  METHODS
  The International Tennis Federation facilitated a meeting of 11 experts from seven countries representing a range of tennis stakeholders. Using a mixed methods consensus approach, key issues related to definitions, methodology and implementation were discussed and voted on by the group during a structured 1-day meeting. Following this meeting, two members of the group collaborated to produce a draft statement, based on the group discussions and voting outcomes. Three revisions were prepared and circulated for comment before the final consensus statement was produced.
  
  
  RESULTS
  A definition of medical conditions (injuries and illnesses) that should be recorded in tennis epidemiological studies and criteria for recording the severity and nature of these conditions are proposed. Suggestions are made for recording players' baseline information together with recommendations on how medical conditions sustained during match play and training should be reported.
  
  
  CONCLUSIONS
  The definitions and methodology proposed for recording injuries and illnesses sustained during tennis activities will lead to more consistent and comparable data being collected. The surveillance procedures presented here may also be applicable to other racket sports.
authors.affiliation: Royal Netherlands Lawn Tennis Association, Amersfoort, The Netherlands. bpluim@knltb.nl
authors.forename: B M
authors.initials: BM
authors.lastname: Pluim
authors.forename: C W
authors.initials: CW
authors.lastname: Fuller
authors.forename: M E
authors.initials: ME
authors.lastname: Batt
authors.forename: L
authors.initials: L
authors.lastname: Chase
authors.forename: B
authors.initials: B
authors.lastname: Hainline
authors.forename: S
authors.initials: S
authors.lastname: Miller
authors.forename: B
authors.initials: B
authors.lastname: Montalvan
authors.forename: P
authors.initials: P
authors.lastname: Renström
authors.forename: K A
authors.initials: KA
authors.lastname: Stroia
authors.forename: K
authors.initials: K
authors.lastname: Weber
authors.forename: T O
authors.initials: TO
authors.lastname: Wood
mesh_terms: D000208:Acute Disease; D015444:Exercise / Q000502:physiology; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D009140:Musculoskeletal Diseases / Q000453:epidemiology*; D009422:Nervous System Diseases / Q000453:epidemiology*; D012008:Recurrence; D012871:Skin Diseases / Q000453:epidemiology*; D013715:Tennis / Q000293:injuries*