CCOI

CENTER FOR CLINICAL OBSERVATIONAL INVESTIGATIONS

The National Library of Medicine (NLM) provides information about clinical datasets. Inclusion on an NLM Web page does not imply endorsement of, or agreement with, the contents by NLM or the National Institutes of Health. Learn more: NLM Web Policies (nih.gov).

AgingResearchBiobank

MrOS: Osteoporotic Fractures in Men Study

Basic Statistics

Study Date Span: 2002-Present

Participant Count: 5,664

Sex

All participants in the study are men

Race

Race	Participant Count	Participant Percentage
African American	244	4.07%
Asian	191	3.19%
Hispanic	126	2.1%
Other	71	1.18%
White	5,362	89.46%

Age at Enrollment

Age Group	Participant Count	Participant Percentage
64-69	1,769	29.51%
70-74	1,708	28.50%
75-79	1,445	24.11%
80+	1,072	17.88%

Visit Type

Visit	Participant Count	Participant Percentage
V1 - Baseline	5,994	100.00%
VD - Dental Visit 1	1,353	22.57%
VI - Interim Questionnaire	5,742	95.80%
VS - Sleep Visit	3,135	52.30%
V2 - Visit 2	5,229	87.24%
V3 - Visit 3	4,681	78.09%
VI2 - Interim Questionnaire 2	4,100	68.40%
VS2 - Sleep Visit 2	1,055	17.60%
V4 - Visit 4	2,424	40.44%
V4R - Visit 4 Repeat	278	4.64%
VI3 - Interim Questionnaire 3	2,083	34.75%

Last updated Sep 22, 2025