Table 1.
Characteristics of the perimenopausal ERMA baseline population (n = 234).
| Early Perimenopausal (n = 89) # |
Late Perimenopausal (n = 145) ¤ |
P | |
|---|---|---|---|
| Age, y | 51.2 ± 2.0 | 51.8 ± 1.8 | 0.013 a |
| E2, nmol/L | 0.46 ± 0.34 | 0.26 ± 0.18 | <0.001 b |
| FSH, IU/L | 18.3 ± 5.0 | 46.9 ± 20.6 | <0.001 b |
| DHEAS, µmol/L | 2.64 ± 1.42 | 2.91 ± 1.36 | 0.135 b |
| SHBG, nmol/L | 58.5 ± 24.3 | 53.1 ± 22.3 | 0.140 b |
|
Education level Primary Secondary Tertiary |
1.1% 59.1% 39.8% |
3.4% 47.6% 49.0% |
0.261 b |
|
Smoking Never Quitter Current smoker |
74.2% 23.6% 2.2% |
66.9% 24.1% 9.0% |
0.159 b |
| Alcohol use, units/week | 4.5 ± 4.5 | 3.9 ± 3.2 | 0.528 b |
|
Bleeding status Natural IUC Hysterectomy |
56.2% 34.8% 9.0% |
66.9% 29% 4.1% |
0.151 c |
| Physical activity | |||
| MVPA, min/day X | 53.6 ± 22.8 | 52.0 ± 32.9 | 0.195 b |
| MET-hours/day XX | 4.6 ± 4.2 | 4.3 ± 3.8 | 0.743 b |
Values are given as mean ± SD or as percentage. DHEAS, sulfated dehydroepiandrosterone; E2, estradiol; FSH, follicle stimulating hormone; IUC, intra-uterine contraception/progestogen use; MET, metabolic equivalent; MVPA, moderate-to-vigorous physical activity; SHBG, sex hormone binding globulin.# In the early perimenopausal group, there are missing data regarding education, alcohol use and MET-h/day (n = 1) and regarding MVPA (n = 21). ¤ In the late perimenopausal group, there are missing data regarding DHEAS and SHBG (n = 1) and MVPA (n = 21). a Independent samples t-test, b Mann–Whitney U-test, c Chi-squared test, X accelerometer-measured, XX self-reported. Significant results (P ≤ 0.050) are shown in bold.