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Table 3 Exploring self-reported versus administratively-defined injury (unweighted)

From: Is there value in using physician billing claims along with other administrative health care data to document the burden of adolescent injury? An exploratory investigation with comparison to self-reports in Ontario, Canada

i) Direct comparison of injuries identified using different data sources: self-reported injury for those with and without administratively-defined injury
   Administratively- defined injury   No administratively- defined injury  
  Total N N Self-report N(%)   N Self-report N(%) Odds ratio
Total 2047 550 213 (38.7)   1497 193 (12.9) 4.3
Males 1081 318 126 (39.6)   763 123 (16.1) 3.4
Females 966 232 87 (37.5)   734 70 (9.5) 5.7
Phys. office1 1855 358 134 (37.4)   1497 193 (12.9) 4.0
ED/ inpatient2 1812 315 145 (46.0)   1497 193 (12.9) 5.8
ii) Time from most recent administratively-defined injury to OHS interview (N = 550)3
      N Mean (# days) Median (# days)
Adolescents with self-reported injury      213 141 125
Adolesents without self-reported injury      337 173 171
Total      550 160 146
iii) Self-reported repetitive strain injuries, by self-reported & administratively-defined acute injuries (N = 2045)
      N Repetitive Strain Injury N (%) Odds Ratio
Self-reported acute injury   406 57 (14.0) 1.9
No self-reported acute injury   1639 129 (7.9)  
Administratively-defined acute injury   550 88 (16.0) 2.7
No administratively-defined acute injury   1495 98 (6.6)  
Administratively-def. & self-rep. acute injury   213 35 (16.4) 1.1
Administratively-def. & no self-rep. acute injury   337 53 (15.7)  
  1. def = defined; ED = emergency department; OHS = Ontario Health Survey; phys = physician's; self-rep. = self-reported
  2. 1 At least 1 documented physician's office visit for injury within 1 year prior to interview, based on the administrative data. Adolescents with emergency department or inpatient visits but no physicians' office visits for injury are excluded from the denominator.
  3. 2 Any documented emergency department or inpatient visits for injury within 1 year prior to interview, based on the administrative data. Adolescents with physicians' office visits but no emergency department or inpatient visits for injury are excluded from the denominator.
  4. 3 Analysis includes only those adolescents (N = 550) with administratively-defined injury