Table 1.
Numbers of Participants With Available Urinary N-Telopeptide (NTX) Measurement According to Year of Follow-up
| Visit numbera | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 0 = baseline | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |
| Total no. of participants | 3302 | 2881 | 2746 | 2710 | 2679 | 2577 | 2448 | 2368 | 2279 |
| No. of participants for whom data were available regarding NTX, VMS,b and menopausal stage | 2336 | 2043 | 1944 | 1830 | 1728 | 1610 | 1707 | 1663 | 1061 |
| No. of participants after further censoring of women with hysterectomy, bilateral oophorectomy, pregnancy, breast-feeding, hormone therapy use, use of medication known to influence bone density, and missed visitsc | 2283 | 1760 | 1521 | 1330 | 1199 | 1110 | 1147 | 1099 | 686 |
Visit number 0 denotes baseline visit.
VMS = vasomotor symptoms.
Medication known to influence bone density includes self-reported use of corticosteroid pills, medications for epilepsy, tamoxifen, chemotherapy, or medications used to prevent or treat osteoporosis. Women were censored at the first visit at which they reporting taking any of these medications.