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Table 3 Summary of similar studies

From: The utility of MRI in predicting radiographic erosions in the metatarsophalangeal joints of the rheumatoid foot: a prospective longitudinal cohort study

Study Results summary
Østergaard et al. [3] (wrist) Most radiographic erosions were evident 2 years prior on MRI.
aThe PPV of MRI erosion predicting radiograpic erosion over the course of 5 years was estimated to be 52%.
The relative risk of developing radiographic erosion when MRI erosion is present is 4.1 after 5 years.
Scheel et al. [23] (wrist) Forty-one percent of MRI erosions were seen on radiographs 7 years later.
aThe estimated PPV of MRI erosion predicting radiographic erosion at 7 years is 50%.
aThe estimated relative risk of MRI erosion for future radiographic erosion at 7 years is 43.
McQueen et al. [24] (wrist) This is a study of early rheumatoid arthritis with symptoms of 6 months or less.
Statistical results of an MRI erosion in the wrist predicting future radiographic erosion in the wrist at 1 year were sensitivity of 83%, specificity of 70%, PPV of 58%, NPV of 91%, and odds ratio of 11.6.
Twelve new erosions over a 1-year period were seen in the dominant wrist of 42 patients.
  1. All three of these studies featured the wrist. aEstimated from data reported in the article. MRI, magnetic resonance imaging; NPV, negative predictive value; PPV, positive predictive value.