Ells and coworkers analysed the safety of telemedical classification of referral-warranted ROP RW-ROP [ 36].
In this study, we analyzed classification of similar referrals to determine the reliability of classification into priority groups (i.e., horizontal equity).
All study participants met the American College of Rheumatology 1987 revised criteria for the classification of RA. 13 Referrals from local general practitioners were triaged within 1 week, and patients were generally diagnosed within the next 4 weeks.
We compared consultation rates (including all contacts with the practice), diagnoses (ICPC-1 coded), medication prescriptions (coded according to the Anatomical Therapeutic Chemical classification system), and rate and type of referrals from the start of the pregnancy until six weeks postpartum (336 days).
We collect the following data: medical history using ICPC-2 (International Classification of Primary Care) [ 42], number and content of contacts during six months of follow up using ICPC-2, number and nature of referrals, and medication using ATC classification (Anatomical Therapeutic Chemical drug classification) [ 43].
In these records GPs registered the diagnosis using the International Classification of Primary Care (ICPC), and referrals and prescriptions using ATC-codes (AnaTherapeuticalpeutiChemicaliclassificationtion system).
Classification of the reason for each referral to IRT was recorded as part of the referral process.
CH diagnosis had originally been established according to the 1962 Ad Hoc Committee on Classification of Headache [13] for the pre-1988 referrand and on the International Headache Society (IHS) classifications for post-1988 referrals [14 16].
In clinical practice, the correct differential diagnosis between some HCV-associated rheumatic disorders and classical rheumatic diseases is still under debate, in particular between MCs and pSS; this probably reflects the lack of standard classification of these diseases in different referral centers.
Exertional cephalalgias comprise 1 2% of referrals to headache clinics [1, 2] The current International Headache Classification (IHC2) [3] recognises three forms of exertion or activity provoked headache.
