Skip to main content

Table 1 Distribution of social, health and clinical patient’s variables by age groups in stage III colon cancer (n = 654)

From: Impact of age on the use of adjuvant treatments in patients undergoing surgery for colorectal cancer: patients with stage III colon or stage II/III rectal cancer

 N<  65 years
N = 246
n (%)
65–80 years
N = 311
n (%)
>  80 years
N = 97
n (%)
P valuea
Sociodemographic variables
Sex654    
 Male 151 (61.4)205 (65.9)60 (61.9)0.50
 Female 95 (38.6)106 (34.1)37 (38.1)0.65
Deprivation index624    
 Quartile 1 least deprived 49 (21.2)67 (22.3)17 (18.5)0.67
 Quartile 2 64 (27.7)101 (33.6)31 (33.7)0.78
 Quartile 3 67 (29.0)72 (23.9)22 (23.9) 
 Quartile 4 most deprived 51 (22.1)61 (20.3)22 (23.9) 
Level of education534    
 Illiterate or with no formal education 10 (4.8)46 (18.2)15 (20.5)< 0.0005
 Primary 123 (59.1)162 (64.0)50 (68.5)< 0.0005
 Secondary 35 (16.8)24 (9.5)3 (4.1) 
 University 40 (19.2)21 (8.3)5 (6.8) 
Living arrangements522    
 Living alone 23 (11.5)42 (17.0)14 (18.7)0.18
 Living with others 177 (88.5)205 (83.0)61 (81.3)0.08
Family history of cancer584    
 No 118 (52.2)175 (63.9)68 (81.0)< 0.0005
 Yes 108 (47.8)99 (36.1)16 (19.0)< 0.0005
Screening622    
 No 174 (74.0)250 (84.7)86 (93.5)< 0.0005
 Yes 61 (26.0)45 (15.3)6 (6.5)< 0.0005
Health behaviours and comorbidities
Smoking habits648    
 Never smoker 112 (45.5)154 (50.0)50 (53.2)0.01
 Current smoker 42 (17.1)31 (10.1)4 (4.3)0.79
 Ex-smoker 92 (37.4)123 (39.9)40 (42.6) 
Alcohol612    
 No 188 (83.9)257 (86.2)84 (93.3)0.09
 Yes 36 (16.1)41 (13.8)6 (6.7)0.04
ASA class633    
 I-II 175 (73.2)157 (52.2)30 (32.3)< 0.0005
 III 60 (25.1)127 (42.2)52 (55.9)< 0.0005
 IV 4 (1.7)17 (5.6)11 (11.8) 
Charlson Index654    
 0 163 (66.3)158 (50.8)40 (41.2)< 0.0005
 1 49 (19.9)80 (25.7)26 (26.8)< 0.0005
  ≥ 2 34 (13.8)73 (23.5)31 (32.0) 
Tumour characteristics
Site654    
 Rectosigmoid junction 40 (16.3)45 (14.5)11 (11.3)0.72
 Distal colon 108 (43.9)140 (45.0)41 (42.3)0.21
 Proximal colon 98 (39.8)126 (40.5)45 (46.4) 
Histological classification643    
 Adenocarcinoma 219 (91.3)274 (89.3)87 (90.6)0.18
 Mucinous adenocarcinoma 16 (6.7)27 (8.8)9 (9.4)0.69
 Signet-ring cell carcinoma 2 (0.8)6 (2.0)0 (0.0) 
 Other types of carcinoma 3 (1.3)0 (0.0)0 (0.0) 
Degree of differentiation573    
 Low grade 165 (79.3)226 (81.9)79 (88.8)0.15
 High grade 43 (20.7)50 (18.1)10 (11.2)0.07
Intervention
Main intervention654    
 Elective 232 (94.3)300 (96.5)87 (89.7)0.03
 Emergency 14 (5.7)11 (3.5)10 (10.3)0.32
Curative resection618    
 R0 218 (92.4)261 (90.0)84 (91.3)0.63
 R1 / R2 18 (7.6)29 (10.0)8 (8.7)0.56
Surgeon’s profile615    
 General 61 (27.0)96 (32.5)36 (38.3)0.12
 Coloproctologist 165 (73.0)199 (67.5)58 (61.7)0.04
Cancer committee617    
 No 77 (32.9)127 (43.6)44 (47.8)0.01
 Yes 157 (67.1)164 (56.4)48 (52.2)0.004
  1. aPearson Chi-square test to generate upper P value and chi-square test for trends to generate lower P value