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. 2004 Aug 9;6(3):65.

Table 6.

Cancer and the Estrogen-Alone Arm of the Women's Health Initiative[11]

Estrogen Alone(ET) (N = 5310) Placebo (N = 5429)
Cancer Significance Decreased or
increased per 10,000
per year
Number
ET
Per
10,000/yr
ET
Number
placebo
Per
10,000/yr
placebo
Percent (%)
reduction or
increased
Hazard
ratio/95%
nCI
Invasive breast None P=0.06 7 Decreased 94 26 124 33 23 % decreased 0.77/ 059 – 1.01
Colorectal None 1 Increased 61 17 58 16 5 % increased 1.08/ 0.75 – 1.55
Total None 7 ND 103 ND 110 6 % decreased 0.93/ 0.81 – 1.07

ND = no data