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Table 3 Relative risks with 95% confidence intervals of RTC of unlicensed drivers stratified by injury severity, 1998-2004.

From: Road traffic crash circumstances and consequences among young unlicensed drivers: A Swedish cohort study on socioeconomic disparities

  All RTCs, n = 1522 Severe1 RTCs, n = 648
  Crude Adjusted2 Crude Adjusted2
Sex n = 147743   n = 1476869  
   Male 5.74 (4.98-6.61)   6.57 (5.24-8.25)  
   Female 1.0   1.0  
Household socioeconomic position n = 1405498 n = 1405498 n = 1404703 n = 1404703
   High/intermediate level salaried employees 1.0 1.0 1.0 1.0
   Farmer 2.11 (1.70-2.63) 2.08 (1.67-2.58) 2.43 (1.75-3.37) 2.40 (1.73-3.33)
   Self-employed 1.43 (0.89-2.30) 2.04 (1.27-3.29) 2.73 (1.57-4.75) 4.18 (2.40-7.28)
   Assistant non-manual employees 1.62 (1.34-1.96) 1.75 (1.45-2.11) 1.85 (1.39-2.46) 2.00 (1.51-2.66)
   Manual workers 2.02 (1.76-2.32) 2.28 (1.99-2.62) 2.30 (1.86-2.84) 2.60 (2.10-3.22)
   Others 3.49 (2.93-4.15) 3.25 (2.73-3.88) 2.95 (2.21-3.94) 2.72 (2.04-3.63)
Receipt of welfare benefits n = 1477743 n = 1477743 n = 1476869 n = 1476869
   Yes 2.97 (2.68-3.28) 2.21 (1.99-2.44) 2.52 (2.16-2.94) 1.81 (1.55-2.12)
   No 1.0 1.0 1.0 1.0
Urbanicity3 n = 1472083 n = 1472083 n = 1471215 n = 1471215
   Metropolitan areas 1.0 1.0 1.0 1.0
   Large urban areas 0.96 0.85-1.08 1.14 1.01-1.28 1.24 (1.02-1.50) 1.50 (1.24-1.83)
   Medium-sized urban areas 0.91 0.78-1.06 1.20 1.03-1.40 1.30 (1.03-1.64) 1.76 (1.39-2.23)
   Small urban areas 0.96 0.76-1.40 1.30 1.03-1.64 1.41 (1.00-1.98) 1.97 (1.40-2.77)
   Rural areas 1.14 0.92-1.40 1.71 1.38-2.11 2.09 (1.57-2.79) 3.29 (2.47-4.39)
  1. 1 Severe RTCs were defined as those leading to serious injuries, requiring hospital care or fatal for any persons involved in the RTC.
  2. 2 Adjusted for sex and age.
  3. 3 For definitions please see Table 1.