FAQs Archive | Page 3 of 8 | OM1 outcomes & advanced analytics

If both total joint counts are populated (tjc_observed) and (tjc_observed_28) and the values are different between them, should we select the largest value as a representation of the number of joints examined?

July 24, 2023

If the first (tjc_observed) is higher than the second (tjc_observed_28) then, we would advise using the first since that allows for a wider variety of joints to be counted. The 28 is a specific set of joints that feed into many of the disease activity measures; the broader one allows for any joints (including some[…]

Is anti-CCP and Rheumatoid Factor (RF) available in the OM1 JIA dataset?

July 24, 2023

We have provided a code set below to help you identify those patients with a lab in the JIA datasets. The anti-CCP positive/negative status is available via the following three LOINC codes: LOINC Code LOINC Name 53028-7 Cyclic citrullinated peptide Ab [Presence] in Serum 63375-0 Cyclic citrullinated peptide IgA+IgG Ab [Presence] in Serum 42898-7 Cyclic[…]

Can we identify juvenile PsA patients? Beside using age, what other criteria do you recommend?

July 24, 2023

Yes, you can use age of onset. Juvenile PsA is defined as PsA with the age of onset < 16 years. Both the JIA PremiOM dataset and the PsA PremiOM dataset may be used. PsA PremiOM dataset: The following patients can be reasonably classified as juvenile PsA patients in the PsA PremiOM dataset. Patients who[…]

For JIA, can we differentiate pcJIA (polyarticular course) and sJIA (systemic)?

July 24, 2023

One can approach differentiating between these via diagnostic codes, supplemented with the joint counts. The diagnostic codes that directly refer to the polyarticular status and can be used as a proxy pcJIA are: ICD9: 714.30: Polyarticular juvenile rheumatoid arthritis, chronic or unspecified 714.31: Polyarticular juvenile rheumatoid arthritis, acute ICD10: M08.3 seronegative polyarthritis The above ICD10[…]

Does OM1 have a polymyalgia rheumatica (PMR) dataset similar to the PremiOM GCA dataset?

July 24, 2023

OM1 does not currently offer a PremiOM PMR dataset; however, consistent with the established epidemiology of the conditions, almost half of the GCA patients in the PremiOM dataset have concomitant PMR. If a broader set of PMR patients is required, a custom cohort of PMR patients (with and without concomitant GCA) can be licensed separately.