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Table 4 Polyp prevalence by age and sex

From: Age-specific prevalence of serrated lesions and their subtypes by screening colonoscopy: a retrospective study

Polyp histology Subjects Male (%) Age Trend P
  10358/28544   20-29 (n = 219) 30-39 (n = 2548) 40-49 (n = 8960) 50-59 (n = 9994) 60-69 (n = 5296) ≥70 (n = 1527)  
Adenoma 7775 (27.2%) 5511 (70.9) 11 (5.0%) 279 (10.9%) 1954 (21.8%) 2958 (29.5%) 1952 (36.9%) 621 (40.7%) 0.027
Tubular, low grade 7749 (27.1%) 5498 (71.0) 11 279 1951 2948 1940 620  
Tubular, high grade 19 (0.1%) 10 (50) 0 0 1 8 7 3  
Villous/tubulovillous 11 (0.03%) 11 (100) 0 1 2 2 3 3  
Adenocarcinoma 51 (0.2%) 36 (70.6) 0 0 5 14 26 6  
Serrated lesions 4312 (15.1%) 3170 (73.5) 22 (10.0%) 300 (11.8%) 1323 (14.8%) 1529 (15.3%) 888 (16.8%) 250 (16.4%) 0.036
Hyperplastic 4187 (14.7%) 3097 (74.0) 21 287 1277 1494 866 242  
Sessile serrated 143 (0.5%) 86 (60.1) 1 18 50 45 29 5  
Traditional serrated 17 (0.1%) 13 (76.5) 0 2 6 2 4 3  
Carcinoid 26 (0.1%) 17 (65.4) 0 6 11 7 2 0