CCOI

CENTER FOR CLINICAL OBSERVATIONAL INVESTIGATIONS

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AgingResearchBiobank

MOST: Multicenter Osteoarthritis Study

Basic Statistics

Study Date Span: 1986 - 2009

Participant Count: 10,366

Sex

Sex	Participant Count	Participant Percentage
Female	2,667	58.60%
Male	1,884	41.40%

Race

Race	Participant Count	Participant Percentage
Black or African American	781	17.16%
Other	98	2.15%
White or Caucasian	3,672	80.69%

Age at Enrollment

Age Group	Participant Count	Participant Percentage
40-49	294	6.46%
50-59	1,854	40.74%
60-69	1,714	37.66%
70-79	689	15.14%

Visit Timeframe

Visit	Original Cohort	New Cohort	Participant Count	Participant Percentage
Baseline - First Cycle	3,026	0	3,026	66.49%
15 Month	3,007	0	3,007	66.07%
30 Month	2,969	0	2,969	65.24%
60 Month - Second Cycle	2,768	0	2,768	60.82%
72 Month	2,715	0	2,715	59.66%
84 Month	2,638	0	2,638	57.97%
144 Month/Baseline - Third Cycle	2,177	1,525	3,702	81.34%
152 Month/8 Month	1,274	1,486	2,760	60.65%
160 Month/16 Month	6	18	24	0.53%
168 Month/24 Month	1,917	1,459	3,376	74.18%

Last updated Jul 16, 2025