TABLE 2.
Sample demographics for hormone replacement therapy (HRT) users (n = 5,651) and non‐users (n = 11,172)
| HRT users | Non‐users | t | χ2 | p | N | |
|---|---|---|---|---|---|---|
| Age range (years) | 40.4–70.3 | 40.2–70.2 | 16,823 | |||
| Age (mean ± SD) | 59.3 ± 5.4 | 52.4 ± 7.00 | 965.4 | <.001 | 16,823 | |
| Number of births (years) | 1.8 ± 1.1 | 1.7 ± 1.2 | 144.1 | <.001 | 16,817 | |
| Age at first birth | 25.7 ± 4.8 | 27.5 ± 5.1 | 600.8 | <.001 | 13,270 | |
| BMI (kg/m2) | 27.5 ± 4.8 | 27.4 ± 4.8 | 730.5 | <.001 | 16,724 | |
| Age at menopause (years) | 48.5 ± 5.8 | 50.6 ± 3.9 | 951.17 | <.001 | 9,369 | |
| Menopause (yes) | 96.1% | 50.4% | 2,695.4 | <.001 | 14,179 | |
| Hysterectomy (yes) | 31.5% | 6.5% | 1,841.7 | <.001 | 16,797 | |
| Oophorectomy (yes) | 17.6% | 1.5% | 1,486.5 | <.001 | 16,712 | |
| Hypertension (yes) | 21.6% | 16.2% | 51.0 | <.001 | 12,029 |
Note: Mean ± SD/% for each variable in each of the groups; N, sample size; BMI, body mass index. χ2 refers to the Pearson's chi‐square test.