injd: Example of an 'injd' object

In injurytools: A Toolkit for Sports Injury Data Analysis

Example of an injd object

Description

An injd object (S3), called injd, to showcase what this object is like and also to save computation time in some help files provided by the package. The result of applying prepare_all() to raw_df_exposures (prepare_exp(raw_df_exposures, ...)) and
raw_df_injuries (prepare_inj(raw_df_injuries, ...)).

Usage

injd

Format

The main data frame in injd gathers information of 28 players and has 108 rows and 19 columns:

player

Player identifier (factor)

t0

Follow-up period of the corresponding player, i.e. player’s first observed date, same value for each player (Date)

tf

Follow-up period of the corresponding player, i.e. player’s last observed date, same value for each player (Date)

date_injured

Date of injury of the corresponding observation (if any). Otherwise NA (Date)

date_recovered

Date of recovery of the corresponding observation (if any). Otherwise NA (Date)

tstart

Beginning date of the corresponding interval in which the observation has been at risk of injury (Date)

tstop

Ending date of the corresponding interval in which the observation has been at risk of injury (Date)

tstart_minPlay

Beginning time. Minutes played in matches until the start of this interval in which the observation has been at risk of injury (numeric)

tstop_minPlay

Ending time. Minutes played in matches until the finish of this interval in which the observation has been at risk of injury (numeric)

status

injury (event) indicator (numeric)

enum

an integer indicating the recurrence number, i.e. the k-th injury (event), at which the observation is at risk

days_lost

Number of days lost due to injury (numeric)

player_id

Identification number of the football player (factor)

season

Season to which this player's entry corresponds (factor)

games_lost

Number of matches lost due to injury (numeric)

injury

Injury specification as it appears in https://www.transfermarkt.com, if any; otherwise NA (character)

injury_acl

Whether it is Anterior Cruciate Ligament (ACL) injury or not (NO_ACL); if the interval corresponds to an injury, NA otherwise (factor)

injury_type

A five level categorical variable indicating the type of injury, whether Bone, Concussion, Ligament, Muscle or Unknown; if any, NA otherwise (factor)

injury_severity

A four level categorical variable indicating the severity of the injury (if any), whether Minor (<7 days lost), Moderate ([7, 28) days lost), Severe ([28, 84) days lost) or Very_severe (>=84 days lost); NA otherwise (factor)

Details

It consists of a data frame plus 4 other attributes: a character specifying the unit of exposure (unit_exposure); and 3 (auxiliary) data frames: follow_up, data_exposures and data_injuries.

injurytools documentation built on Nov. 15, 2023, 1:06 a.m.