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Table 5 Associations between GP characteristics and referral for diagnostic imaging (n = 64) and to a specialist (n = 66)

From: A cross-sectional study reporting concussion exposure, assessment and management in Western Australian general practice

GP characteristics Referral for diagnostic imaging p-value# Referral to specialist p-value#
No (n = 35) Yes (n = 29) No (n = 31) Yes (n = 35)
Hours worked at GP, mean ± standard deviation 32.1 ± 11.0 32.1 ± 9.3 0.98 34.5 ± 10.5 29.7 ± 9.2 0.05
Age groups (years old), n (%)    0.32    0.10
-  ≤ 45 17 (48.6) 18 (62.1)   14 (45.2) 23 (65.7)  
-  > 45 18 (51.4) 11 (37.9)   17 (54.8) 12 (34.3)  
Location of GP practice, n (%)    0.10    0.57
- Regional 11 (32.4) 4 (14.3)   8 (26.7) 7 (20.6)  
- Metropolitan 23 (67.7) 24 (85.7)   22 (73.3) 27 (79.4)  
Concussion diagnoses made/year, n (%)    0.69    0.06
-  < 5 20 (57.1) 18 (62.1)   15 (48.4) 25 (71.4)  
-  ≥ 5 15 (42.9) 11 (37.9)   16 (51.6) 10 (28.6)  
Work outside sessional load, n (%)    0.78    0.55
- No 23 (65.7) 20 (69.0)   20 (64.5) 25 (71.4)  
- Yes 12 (34.3) 9 (31.0)   11 (35.5) 10 (28.6)  
Ever heard of guidelines, n (%)    0.38    0.30
- No 12 (34.3) 7 (24.1)   7 (22.6) 12 (34.3)  
- Yes 23 (65.7) 22 (75.9)   24 (77.4) 23 (65.7)  
Have a protocol for coding, n (%)    0.47    0.99
- No 22 (62.9) 20 (71.4)   21 (67.7) 23 (67.7)  
- Yes 13 (37.1) 8 (28.6)   10 (32.3) 11 (32.4)  
  1. # Difference in mean hours worked between GP who referred for diagnostic imaging was assessed using independent-samples t-test. Associations between categorical demographic variables and referral for diagnostic imaging were assessed using Chi-squared tests. The same statistical approach was applied for referral to specialist