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Fig. 1 | SpringerPlus

Fig. 1

From: Serum estrone concentration, estrone sulfate/estrone ratio and BMI are associated with human epidermal growth factor receptor 2 and progesterone receptor status in postmenopausal primary breast cancer patients suffering invasive ductal carcinoma

Fig. 1

Correlation between the normal distributed serum concentration of E1S ½ (nmol l−1)½ and E1 ½ (pmol l−1)½ (a) and E1S ½ (nmol l−1)½ and E2 ½ (pmol l−1)½ (b). Serum E1 (966 cases) and E2 (631 cases) levels are significantly correlated with E1S (r = 0.457, p < 0.0001 and r = 0.509, p < 0.0001), respectively. Correlation coefficient (r), 95% confidence and 95% prediction intervals are shown on the figure. E1 estrone, E1S estrone sulfate, E2 estradiol, CI confidence interval.

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