Table 1.
Comparison of characteristics between oldest-old women and centenarian women in all the participants
| Variables | Oldest-old women (N = 468) | Centenarian women (N = 758) | All (N = 1226) | P |
|---|---|---|---|---|
| Age (year)a | 84.0 (82.0, 89.0) | 102.0 (101.0, 104.0) | 100.5 (87.0, 103.0) | < 0.001 |
| Han ethnicity, n (%)b | 414 (88.5) | 672 (88.7) | 1086 (88.6) | 0.918 |
| Illiteracy, n (%)b | 432 (92.3) | 732 (96.6) | 1164 (94.9) | 0.001 |
| Smoker, n (%)b | 13 (2.8) | 52 (6.9) | 65 (5.3) | 0.002 |
| Drinker, n (%)b | 80 (17.1) | 103 (13.6) | 183 (14.9) | 0.094 |
| E2 (pmol/L)a | 18.4 (18.4, 36.9) | 33.2 (18.4, 56.1) | 22.9 (18.4, 38.6) | < 0.001 |
| T (nmol/L)a | 0.4 (0.2, 0.9) | 0.4 (0.2, 0.7) | 0.4 (0.2, 0.8) | 0.100 |
| E2/Ta | 55.8 (23.9, 141.5) | 95.6 (48.7, 204.4) | 80.0 (37.1, 204.2) | < 0.001 |
| FSH (mIU/mL)a | 82.3 (65.9, 100.2) | 81.4 (61.0, 101.0) | 82.3 (62.7, 100.4) | 0.211 |
| LH (mIU/mL)a | 36.3 (28.4, 42.7) | 36.2 (28.4, 47.1) | 36.3 (28.4, 45.7) | 0.193 |
| ADLa | 100.0 (91.0, 100.0) | 85.0 (60.0, 95.0) | 90.0 (70.0, 100.0) | < 0.001 |
ADL activity of daily living; E2 estradiol; E2/T estradiol/testosterone; FSH follicle-stimulating hormone; LH luteinizing hormone; T testosterone
aContinuous variables with skewed distributions were presented with medians (interquartile ranges) and compared with Mann–Whitney U tests
bCategorical variables were presented with numbers (percentages) and compared with Chi-square tests