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Table 4 Stage distribution for patients in the study (all patients dived between intervention and controls), and only for patients for whom the GP was involved in the diagnosis

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

  All patients Controls, all Intervention, all P-value Controls, involved Intervention, involved p-value
  n (%) n (%) n (%)   n (%) n (%)  
Stage IA 46 (13.9) 19 (11.9) 27 (15.8)   4 (4.9) 11 (11.3)  
Stage IB 33 (10.0) 18 (11.3) 15 (8.8)   8 (9.8) 8 (8.3)  
Stage IIA 14 (4.2) 3 (1.9) 3 (1.8)   3 (3.7) 3 (3.1)  
Stage IIB 22 (6.6) 11 (6.9) 11 (6.4)   7 (8.5) 7 (7.2)  
Stage IIIA 22 (6.6) 9 (5.5) 13 (7.6)   5 (6.1) 6 (6.2)  
Stage IIIB 24 (7.3) 12 (7.5) 12 (7.0)   7 (8.5) 9 (9.3)  
Stage IV 170 (51.4) 88 (55.0) 90 (52.6) 0.586a 48 (58.5) 53 (54.6) 0.470a
Localised (IA-IIIA) 137 (41.4) 60 (37.5) 69 (40.4) 0.595b 27 (32.9) 35 (36.1) 0.658b
Metastatic (IIIB-IV) 194 (58.6) 100 (62.5) 102 (59.6)   55 (67.1) 62 (63.9)  
  1. aDifferences between groups were tested by Wilcoxon test.bDifferences between groups were tested by Pearsons χ2 test
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