Table 6.
Comparison of prevalence of NTx/Cre level higher than the upper bound of the reference range (66.2 in men and 89.0 in women), NTx/Cre level indicating a high risk of fracture (>54.3 mmol BCE/mmol Cre), and the presence of both osteoporosis at any measurement site (T-score of ≤ −2.5) and a high fracture risk simultaneously using Fisher's exact test with multiple comparisons corrected by Bonferroni's method.
| (A): Comparison between women and men | |||
|---|---|---|---|
| N(%) | Women (N = 199) | Men (N = 40) | Sig. |
| higher than the upper bound of the reference range a | 26(13) | 6(15) | 0.805 |
| high fracture risk group b | 107(54) | 14(35) | 0.037 |
| Osteoporosis c & high fracture risk group b | 33 (17) | 0 (0) | 0.002 |
| (B) Comparison among ages in women | ||||
|---|---|---|---|---|
| 60s (N = 56) | 70s (N = 104) | 80s (N = 39) | Sig. | |
| higher than the upper bound of the reference range a |
8 (14) | 14 (13) | 4 (10) | 0.922 |
| high fracture risk group b | 31 (55) | 59 (57) | 17 (44) | 0.377 |
| Osteoporosis c & high fracture risk group b | 3 (5) | 23 (22) | 7 (18) | 0.016(1) |
Sig.: significance, NTx/Cre: urinary level of N-telopeptide normalized to creatinine. aNTx/Cre of >66.2 mmol BCE/mmol Cre in men and >89.0 mmol BCE/mmol Cre in women, bNTx/Cre of >54.3 mmol BCE/mmol Cre, cT-score of ≤ −2.5. <70 years: 60s, <80 years: 70s, and ≥80 years: 80s. (1)p = 0.019 between 60s and 70s. Boldface p-values are considered statistically significant.