Table 1 Summary of intake data by receptor status and antioestrogenic drug prescription
Total phytoestrogen intake (μg/1,000 kcal) (n = 316) | n | First quartile | Second quartile | Third quartile | Fourth quartile | ||
|---|---|---|---|---|---|---|---|
| Â | Â | Receptor status | Â | Â | Â | Â | Â |
Mean | 8,388 |    ER-negative | 42 | 11 (14%) | 11 (14%) | 13 (16%) | 7 (9%) |
Range | 126 to 77,703 |    ER-positive | 182 | 40 (51%) | 42 (53%) | 48 (61%) | 52 (66%) |
Quartile ranges |  |    Not available | 92 | 28 (35%) | 26 (33%) | 18 (23%) | 20 (25%) |
   First quartile | <3,817 | Antioestrogenic drugs |  |  |  |  |  |
   Second quartile | 3,817 to 6,798 |    No prescription | 109 | 30 (38%) | 30 (38%) | 25(32%) | 24 (30%) |
   Third quartile | 6,799 to 10,255 |    Tamoxifen or arimidexa | 200 | 47 (59%) | 47 (59%) | 52 (65%) | 54 (68%) |
   Fourth quartile | >10,255 |    Other/missing | 7 | 2 (3%) | 2 (3%) | 2 (3%) | 1 (2%) |