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Table 1 Baseline characteristics and health status of participants in the study compared to non-participants at six, 12 and 24 month follow up

From: Predictors of return to work following motor vehicle related orthopaedic trauma

  Participation at six months Participation at 12 months Participation at 24 months
Variable No (n = 101) Yesa (n = 233) P No (n = 124) Yesa (n = 210) P No (n = 151) Yesa (n = 182) p
Age (years), Mean (SD) 31.9 (12.0) 38.2 (14.2) ** 31.7 (11.5) 39.0 (14.4) ** 31.5 (11.7) 40.3 (14.3) **
New Injury Severity Score, No. (%)    NS    *    NS
 Minor - moderate 1-8 22 (21.8) 41 (17.6)   27 (21.8) 36 (17.1)   33 (21.9) 30 (16.5)  
 Serious 9-15 50 (49.5) 94 (40.3)   61 (49.2) 83 (39.5)   71 (47.0) 73 (40.1)  
 Severe - critical 16-75 29 (28.7) 98 (42.1)   36 (29.0) 91 (43.3)   47 (31.1) 79 (43.4)  
Marital status, No. (%)    **    **    **
 Single 60 (60.0) 87 (37.5)   68 (54.8) 79 (38.0)   86 (57.0) 61 (33.9)  
 Married/defacto 36 (36.0) 131 (56.5)   53 (42.7) 114 (54.8)   61 (40.4) 105 (58.3)  
 Divorced/widowed 4 (4.0) 14 (6.0)   3 (2.4) 15 (7.2)   4 (2.6) 14 (7.8)  
Occupation skill levelb, No. (%)    *    NS    *
 Managers/professionals 20 (19.8) 58 (25.0)   23 (18.5) 55 (26.3)   60 (26.1) 38 (17.1)  
 Tradespersons 26 (25.7) 85 (36.6)   36 (29.0) 75 (35.9)   71 (30.9) 55 (24.8)  
 Intermediate clerical 17 (16.8) 35 (15.1)   21 (16.9) 31 (14.8)   27 (11.7) 37 (16.7)  
 Elementary related 38 (37.6) 54 (23.3)   44 (35.5) 48 (23.0)   53 (23.0) 72 (32.4)  
Body Mass Index (BMI)c (kg/m2)    *    NS    NS
 <18.50 (underweight) 4 (4.0) 2 (0.9)   4 (3.2) 2 (1.0)   4 (2.6) 2 (1.1)  
 18.50-24.99 (normal) 45 (44.6) 78 (33.8)   50 (40.3) 73 (35.1)   64 (42.4) 58 (32.2)  
 ≥25.00 (overweight) 35 (34.7) 89 (38.5)   47 (37.9) 77 (37.0)   53 (35.1) 71 (39.4)  
 ≥30.00 (obese) 17 (16.8) 62 (26.8)   23 (18.5) 56 (26.9)   30 (19.9) 49 (27.2)  
Smoking history, No. (%)    *    NS    NS
 Current smoker 38 (38.0) 51 (22.0)   40 (32.5) 49 (23.4)   48 (32.0) 40 (22.1)  
 Ex-smoker 23 (23.0) 67 (28.9)   32 (26.0) 58 (27.8)   36 (24.0) 54 (29.8)  
 Never smoked 39 (39.0) 114 (49.1)   51 (41.5) 102 (48.8)   66 (44.0) 87 (48.1)  
 Self-reported chronic illnesses (yes) No. (%) 17 (16.8) 76 (32.6) ** 26 (21.0) 67 (31.9) * 35 (23.2) 58 (31.9) NS
 Medication use (current), No. (%) 11 (10.9) 56 (24.1) ** 13 (10.5) 54 (25.8) ** 19 (12.6) 48 (26.5) **
Vehicle type, No. (%)    *    *    *
 Motor vehicle 61 (60.4) 114 (48.9)   71 (57.3) 104 (49.5)   87 (57.6) 88 (48.4)  
 Motorcycle 31 (30.7) 109 (46.8)   42 (33.9) 98 (46.7)   53 (35.1) 87 (47.8)  
 Bicycle 9 (8.9) 10 (4.3)   11 (8.9) 8 (3.8)   11 (7.3) 7 (3.8)  
  1. aParticipation status ‘yes’ was measured using the information recorded in variables - work status at six, 12 and 24 months, and the Short Form-36 Version 2.0 (SF36v2), Physical Component Score (PCS) at six, 12 and 24 months respectively
  2. ** P < 0.01, *P < 0.05, NS not significant
  3. bThe measure for occupation is from the Australian Standard Classification of Occupations (ASCO), Cat. No. 1220.0, Australian Bureau of Statistics 1997. See Table 2, Occupational skill level for all categories
  4. cBMI classification is from the Global Database on Body Mass Index, World Health Organisation