Skip to main content
. 2021 May 12;11:10057. doi: 10.1038/s41598-021-89589-3

Table 2.

Age-adjusted Cox regression analysis for predicting osteoporosis in the unmatched (A) and matched (B) cohorts.

Variables Univariable analysis Age-adjusted Cox regression analysis
ADT Duration of ADT
HR (95% CIs) p-value HR (95% CIs) p-value HR (95% CIs) Pairwise comparison p-value
(A) Unmatched cohorts
Age 1.065 (1.062–1.067) < 0.0001 1.059 (1.057–1.062) < 0.0001 1.059 (1.056–1.062) < 0.0001
ADT
 No Ref. Ref.
 Yes 2.112 (2.018–2.211) < 0.0001 1.377 (1.312–1.445) < 0.0001
Duration of ADT
 No Ref. Ref. Ref.
 < 1 year 1.493 (1.356–1.644) < 0.0001 1.043 (0.947–1.150) 0.3921 Ref.
 1–2 years 2.038 (1.861–2.232) < 0.0001 1.305 (1.190–1.432) < 0.0001 0.0006 Ref.
 2–3 years 2.088 (1.900–2.295) < 0.0001 1.362 (1.237–1.498) < 0.0001 < 0.0001 0.51 Ref.
 > 3 years 2.514 (2.367–2.671) < 0.0001 1.599 (1.502–1.702) < 0.0001 < 0.0001 0.0001 0.003
(B) Matched cohorts
Age 1.036 (1.032–1.040) < 0.0001 1.035 (1.031–1.039) < 0.0001 1.034 (1.031–1.038) < 0.0001
ADT
 No Ref. Ref.
 Yes 1.392 (1.315–1.473) < 0.0001 1.381 (1.305–1.461) < 0.0001
Duration of ADT
 No Ref. Ref. Ref.
 < 1 year 0.982 (0.887–1.088) 0.7334 1.016 (0.917–1.125) 0.762 Ref.
 1–2 years 1.317 (1.195–1.452) < 0.0001 1.293 (1.173–1.426) < 0.0001 0.0002 Ref.
 2–3 years 1.363 (1.232–1.507) < 0.0001 1.352 (1.222–1.495) < 0.0001 < 0.0001 0.5174 Ref.
> 3 years 1.681 (1.568–1.801) < 0.0001 1.639 (1.529–1.757) < 0.0001 < 0.0001 < 0.0001 0.003

ADT androgen deprivation therapy, CI confidence interval, HR hazard ratio.