Serum Parathyroid Hormone Is a New Potential Risk Factor in Multiple Myeloma

Table 2

Time-dependent Cox regression analysis for the overall survival in MM patients.

Factors	Hazard ratio	95% CI	𝑃
PTH
≥68.3	1.710	0.050~58.212	0.766*
<68.3	1.0 (reference)
Age	1.004	0.952~1.058	0.894
Sex
Male versus Female	1.294	0.422~3.968	0.652
ISS stage
I versus II	0.138	0.015~1.250	0.078
I versus III	0.171	0.017~1.683	0.130
Albumin	0.136	0.038~0.491	0.002^†
𝛽2-MG	1.0	1.000~1.000	0.963
Calcium	1.271	0.965~1.675	0.088
Creatinine	1.126	0.735~1.725	0.586
Hemoglobin	1.097	0.824~1.462	0.526
FLC ratio	1.0	1.000~1.000	0.030^†

∗All parameters considered; the overall 𝑃 value of PTH was 0.557.
†Statistical significance.
PTH: parathyroid hormone; FLC: serum free light chain.