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

BMC Public Health

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

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)

χ2 and p-value were calculated by using Fisher’s exact chi square
The proportion of invasion of regional lymph node differed significantly among the common pathological type of BC (χ2=24.6, p=0.02)
Freq Frequency; χ2 chi square, SD Standard Deviation, N Lymph Node

ISSN: 1471-2458