Physician's global assessment is often useful in SLE, but not always: the case of clinical remission

We read with interest the paper by Aranow et al 1 where physician’s global assessment (PGA) displayed excellent inter-rater reliability, which could rely on the inclusion of highly selected lupus experts, as stated by the authors themselves. Indeed, in previous studies, PGA showed a high intra-rater and inter-rater variability,2 3 consistently with PGA being a subjective measure. The high inter-rater reliability observed by the authors is surprising considering that the timeframe for assessing disease activity significantly varied among respondents: 36.7% scored PGA over the previous 7–10 days, 36.7% over the previous month, the remainder over shorter or longer periods of time. Additionally, in almost one-third of respondents, lupus damage was considered when scoring PGA. Notably, the authors suggest that PGA should be scored after considering laboratory results, owing to a better correlation with systemic lupus erythematosus (SLE) disease activity index-2000 (SLEDAI-2K) of postlaboratory versus prelaboratory PGA. …