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. 2014 May 6;8:427. doi: 10.3332/ecancer.2014.427

Table 2. The site of breast cancer in different quadrants in two cohorts 1957–59 and 1997–99 (χ2 = 100.288, p= 0.0001).

Site 1957–1959 1997–1999
UOQ 469 (40.5%) 788 (53.4%)
LOQ 86 (7.4%) 147 (10%)
UIQ 221 (19.1%) 175 (11.8%)
LIQ 62 (5.4%) 91 (6.2%)
Central 145 (12.5%) 69 (4.7%)
Q6 175 (15.1%) 207 (14.0%)
TOTAL 1158 1477