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

SOF: Study of Osteoporotic Fractures

Basic Statistics

Study Date Span: 1986 - 2009

Participant Count: 10,366

Sex

All participants in the study are women

Race

Race Participant Count Participant Percentage
Other 33 0.34%
White 9,671 99.66%

Age at Enrollment

Age Group Participant Count Participant Percentage
65-69 4,113 42.38%
70-74 3,044 31.37%
75-79 1,543 15.90%
80-84 773 7.97%
85-89 200 2.06%
90+ 31 0.32%

Visit Timeframe

Visit Participant Count Participant Percentage
V1 - Baseline 9,704 100.00%
V2 - Year 2 9,339 96.24%
V3 - Year 3.5 9,195 94.75%
V4 - Year 5 8,412 86.69%
V5 - Year 8 7,847 80.86%
V6 - Year 10 7,008 72.22%
V7 - Year 12 524 5.40%
V8 - Year 16 4,261 43.91%
V9 - Year 20 2,121 21.86%

Last updated Jul 16, 2025