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Table 1 Patient characteristics of patients without and with adjuvant chemotherapy. In one patient, regression grade could not be determined

From: Impact of adjuvant chemotherapy on patients with ypT0–2 ypN0 rectal cancer after neoadjuvant chemoradiation: a cohort study from a tertiary referral hospital

  No adjuvant therapy (n = 50) Adjuvant therapy (n = 54) p value
Age 62.9 ± 11.6 61.2 ± 9.8 0.414
Sex (female/male) 36/14 40/14 0.829
Abdominoperineal resection 10/50 11/54 1.0
Anastomotic leakage 9/40 3/43 0.062
T stage
 ypT0 20 (40%) 12 (22%) 0.064
 ypT1 6 (12%) 8 (15%)  
 ypT2 24 (48%) 34 (63%)  
T stage
 ypT0–1 26 20 0.167
 ypT2 24 34  
Lymph nodes retrieved 13.1 ± 0.7 13.5 ± 0.7 0.687
Lymph nodes
 < 12 12 (24%) 12 (22.2%) 1.0
 ≥ 12 38 (76%) 42(77.8%)  
Regression grade (JSCCR)
 TRG 0 0 1 (2%) 0.384
 TRG 1 11 (22%) 9 (17%)  
 TRG 2 20 (49%) 32 (60%)  
 TRG 3 (pCR) 18 (36%) 12 (22%)