Table 2

Distribution of background, tumor characteristics, and recent mammography in relation to use of menopausal hormone therapy


Never use
Past use
Current use
Missing

Total
1,788
253
523
96
Age at diagnosis




     50 to 54 years
154 (9)
23 (9)
148 (28)
20
     55 to 59 years
320 (18)
45 (18)
181 (35)
32
     60 to 64 years
381 (21)
54 (21)
116 (22)
19
     65 to 69 years
521 (29)
70 (28)
55 (11)
15
     70 to 74 years
412 (23)
61 (24)
23 (4)
10
     P valuea

0.99
<0.0001

Socioeconomic statusb




     Low
961 (54)
120 (47)
197 (38)
57
     High
811 (46)
133 (53)
325 (62)
39
     Missing
16
0
1
0
     P valuea

0.042
<0.0001

Recent mammography




     Yes
933 (59)
147 (64)
361 (73)
61
     No
650 (41)
83 (36)
133 (27)
29
     Missing
205
23
29
6
     P valuea

0.15
<0.0001

Tumor size




     ≤ 10 mm
488 (28)
59 (24)
151 (29)
30
     11 to 20 mm
759 (43)
115 (46)
240 (46)
39
     21 to 50 mm
471 (27)
72 (29)
120 (23)
26
     >50 mm
56 (3)
3 (1)
10 (2)
1
     Missing
14
4
2
0
     P valuea

0.17
0.15

Lymph node involvement




     0 lymph nodes
1,164 (68)
164 (67)
353 (69)
69
     1 to 3 lymph nodes
362 (21)
53 (22)
113 (22)
18
     >3 lymph nodes
187 (11)
29 (12)
46 (9)
7
     Missing
75
7
11
2
     P valuea

0.90
0.44

Mean number of examined lymph nodes
10.4
10.8
10.7

Grade




     1
164 (14)
17 (10)
78 (23)
13
     2
524 (43)
65 (40)
133 (39)
20
     3
520 (43)
81 (50)
130 (38)
33
     Missing
580
90
182
30
     P valuea

0.23
0.0002

Histology




     Ductal
1,314 (74)
180 (72)
338 (66)
69
     Lobular
186 (11)
31 (12)
81 (16)
11
     Other
269 (15)
38 (15)
93 (18)
15
     Missing
19
4
11
1
     P valuea

0.64
0.0004

Estrogen receptor (ER), progesterone receptor (PR) status




     ER-PR-
227 (18)
37 (19)
55 (15)
17
     ER+PR-
200 (16)
32 (17)
40 (11)
14
     ER-PR+
42 (3)
5 (3)
23 (6)
2
     ER+PR+
776 (62)
116 (61)
240 (67)
40
     Missing
543
63
165
23
     P valuea

0.91
0.0044


Data presented as n (%). Past use, last use at least 6 months before diagnosis; current use, last use <6 months before diagnosis. aTwo-sided global chi-squared P value for past use and current use, respectively, compared with no use of menopausal hormone therapy. bLow level includes blue-collar workers and low-level white-collar workers, whereas high level includes all other categories.

Rosenberg et al. Breast Cancer Research 2008 10:R78   doi:10.1186/bcr2145