Table 1. Characteristics of all patients taking any medications for osteoporosis and the subset of oral bisphosphonate users.

	Osteoporosis patients			Bisphosphonate users
	(n = 6,923)			(n = 4,129)
Median age (range)	65.0	(20-99)		65.0	(20-99)
Male, n (%)	1,539	(22.2)		814	(19.7)
Diabetes, n (%)	1,149	(16.6)		707	(17.1)
Steroid use, n (%)	4,442	(64.1)		2,934	(71.0)
Chemotherapy use, n (%)	807	(11.6)		551	(13.3)
Antirheumatic drugs use, n (%)	1,265	(18.2)		977	(23.6)
Biologic agents use, n (%)	186	(2.6)		145	(3.5)
Oral BPs administration*
Etidronate, n (%)	N.A.			548	(13.2)
Alendronate, n (%)	N.A.			2,871	(69.5)
Risedronate, n (%)	N.A.			1,604	(38.8)
Minodronate, n (%)	N.A.			38	(0.92)

BPs = Bisphosphonates; N.A. = Not applicable.

^*In some cases, several oral BPs were prescribed for one patient.