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Table 2 Regional lymph node invasion of the common pathological type of breast cancer among all the patients

From: Epidemiology of breast cancer: retrospective study in the Central African Republic

Type of Breast Cancer N1 N2 N3 χ2 P value
  N (%) N (%) N (%)   
Ductal carcinoma in situ 107 (98.2) 2 (1.8) 0 (0.0) 24.6 0.02
Invasive ductal carcinoma 7 (87.5) 0 (0.0) 1 (12.5)   
Invasive lobular carcinoma 1 (50.0) 1 (50.0) 0 (0.0)   
Mucinous carcinoma 2 (100.0) 0 (0.0) 0 (0.0)   
Endocrine carcinoma of the breast 1 (100.0) 0 (0.0) 0 (0.0)   
  1. χ2 and p-value were calculated by using Fisher’s exact chi square
  2. The proportion of invasion of regional lymph node differed significantly among the common pathological type of BC (χ2=24.6, p=0.02)
  3. Freq Frequency; χ2 chi square, SD Standard Deviation, N Lymph Node