Table 1:

Characteristics of adults enrolled in the BBDC Longitudinal Study.

	OI I	OI III	OI IV	OI V	Other/Unclassified	Total
N	173	49	80	5	13	320
Male n (%)	45 (26)	17 (35)	33 (41)	3 (60)	7 (54)	105 (33)
Female (%)	128 (74)	32 (65)	47 (59)	2 40)	6 (46)	215 (67)
Mean age in yrs at enrollment	39.8	30.7	36	42.2	32.5	37.2
Median age (IQR) in yrs at enrollment	37.8 (28.8–46.9)	27.3 (21.3–32.5)	33.4 (23.1–46.6)	46.8 (31.3–50.4)	29.1 (23.8–33.6)	33.7 (25.3–46.6)
Median L-spine aBMD Z-score (IQR) at enrollment*	−1.8 (−2.6 – −0.8)	−3.2 (−4.3 – −2.4)	−2.6 (−3.0 – −1.9)

^*L-spine aBMD Z-scores available in 141, 22, and 48 individuals with OI types I, III, and IV, respectively.