First, the Numeric Rating Scale (NRS) to categorise pain as rated by physicians and nurses are both significantly lower than those reported by the patients [3, 4].
The method for establishing cutpoints (CPs) to categorise pain severity is established for classification of cancer pain into mild, moderate, and severe pain [ 6].
Using the Brief Pain Inventory (BPI) Pain Severity score (which ranges from 0-10) to categorise pain as either 'mild' (1-3), moderate (4-6) or severe (7-10), Mc Dermott and colleagues calculated mean utilities of 0.67, 0.46 and 0.16, respectively.
Percent improvement in answers to work-related questions over the duration of the trials; patients were categorised by pain improvement (based on the 0-10 numerical pain rating scale comparing trial beginning and end); FIQ - Fibromyalgia Impact Questionnaire, SF-36 - Short Form 36 Health Survey, SDS - Sheehan Disability Scale, MAF - Multidimensional Assessment of Fatigue.
This definition focuses on aetiology, thus is not applicable when categorising pain status based on self-reported symptoms using questionnaire methodology.
This study assesses whether a theoretical approach using the self-regulatory model (SRM) could usefully categorise chronic pain patients on the basis of their illness representations, since these have been shown to influence outcomes for other health-related conditions.
Future epidemiology studies should aim to specifically categorise groin pain in athletes.
Pain teaching provision was categorised as a 'dedicated pain module' if a module specifically focused on pain was documented on the curriculum.
The first component involves descriptors of pain categorised as sensory, affective, evaluative and miscellaneous.
Compared with healthy control subjects, Hortobargyi et al. [ 10] noted force appreciation deficits in individuals with OA who commonly experienced pain categorised as slight to moderate in the week prior to testing and during the testing session.
