Table 1 Clinical characteristics of breast cancer tissues (cases) and breast benign diseases (controls)
From: Presence of human papillomavirus DNA in breast cancer: a Spanish case-control study
Cases | Controls | |||
|---|---|---|---|---|
N | Mean (CI 95%) | N | Mean (CI 95%) | |
Age** | 251 | 56.32 (54.76–57.88) | 186 | 40.08 (38.3–41.86) |
Number of children | 250 | 1.92 (1.76–2.09) | 185 | 1.3 (1.11–1.5) |
Breastfeeding duration (months) | 191 | 8.65 (7.16–10.15) | 115 | 9.42 (6.92–11.92) |
Age at menopause | 140 | 48.89 (48.16–49.61) | 36 | 48 (46.47–49.53) |
Tumor size (mm) | 249 | 29.49 (26.99–31.99) | 98 | 31.83 (29.31–34.34) |