Table I.
All analyses* | Hip symptoms | Hip OA outcomes
|
|||
---|---|---|---|---|---|
Radiographic | Symptomatic | Severe radiographic | |||
Entire baseline sample (1991–1997) | 3068 | 3068 | 3068 | 3068 | 3068 |
Outcome at baseline | 1228 | 803 | 323 | 72 | |
Participants at risk at baseline | 1840 | 2265 | 2745 | 2996 | |
Other baseline exclusions | |||||
Hip replacement | 24 | 24 | 24 | 24 | |
Women <50 years | 0 | 312 | 312 | 312 | |
Men <50 years | 0 | 175 | 175 | 175 | |
Missing baseline | 72 | 58 | 51 | 60 | |
Eligible baseline sample | 2788 | 1744 | 1696 | 2183 | 2425 |
Participant exclusions at 1995–2003 follow-up† | |||||
Deceased | 200 | 223 | 301 | 338 | |
Mentally/physically unable | 98 | 123 | 155 | 181 | |
Moved out of study area | 129 | 119 | 159 | 176 | |
Declined participation | 276 | 228 | 286 | 296 | |
No clinic exam | 75 | 83 | 102 | 107 | |
Unable to locate | 30 | 38 | 48 | 55 | |
Eligible at follow-up | 936 | 865 | 1124 | 1242 | |
Missing outcome at follow-up | 0 | 17 | 8 | 30 | |
Analytic sample | 1446 | 936 | 864 | 1116 | 1212 |
Incident cases at follow-up | 200 | 107 | 93 | 30 |
3068 were enrolled at baseline; 2788 were eligible for analysis of at least 1 of the 4 outcomes; 1446 were analyzed for at least 1 of the 4 outcomes.
Participants who were excluded were those who died (deceased), were mentally or physically unable to participate, moved out of the study area, declined to participate, participated in the in-home questionnaire but not the clinic exam (no clinic exam), or were lost to follow up for other reasons (unable to locate).