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Table 5 Characteristics of the lung cancer patients for whom intervention and control GPs returned the questionnaire

From: The effect of direct access to CT scan in early lung cancer detection: an unblinded, cluster-randomised trial

  All patients Intervention + questionnaire Control + questionnaire P-value
n (%) n (%) n (%)  
All: n 331   137 (80.1) 131 (81.9)  
Gender:        
 Male 157 (47.4) 72 (52.6) 55 (42.0) 0.083a
 Female 174 (52.6) 65 (47.4) 76 (58.0)  
Age:        
 Mean (95 % CI) 69.4 (68.4–70.5) 69.5 (67.9–71.1) 69.2 (67.5–70.9) 0.614b
 Range   40–97 yrs.   45–90 yrs.   44–86 yrs.  
 40–59 yrs 61 (18.4) 26 (19.0) 23 (17.6) 0.821c
 60–79 yrs 222 (67.0) 90 (65.7) 92 (70.2)  
 80+ 48 (14.5) 21 (15.3) 16 (12.2)  
Education:        
  < 10 yrs 136 (41.1) 54 (39.4) 60 (45.8) 0.389c
 10–15 146 (44.1) 61 (44.5) 54 (41.2)  
  > 15 yrs 40 (12.1) 17 (12.4) 15 (11.5)  
 Unknown 9 (2.7) 5 (3.7) 2 (1.5)  
Marital status        
 Cohabitating 172 (52.0) 70 (51.1) 71 (54.2) 0.612a
 Living alone 159 (48.0) 67 (48.9) 60 (45.8)  
Comorbidityd        
 Yes 231 (69.8) 117 (85.4) 114 (87.0) 0.932a
 No 35 (10.6) 18 (13.1) 17 (13.0)  
Unknown 65 (19.6) 2 (1.5) 0   
  1. aDifferences between groups were tested by Pearsons χ2 test. bAge differences between groups were tested by Student’s T-test. cDifferences between groups were tested by Wilcoxon test. dData from GP questionnaire