<qa>  What is the average erythema scale?Costs of hospital versus HITH treatment: including costs of beds, consumables, nursing and medical time, and overheads including administrative time, information technology, use of hospital cars Quality of life QOL indicators Clinical assessments of cellulitis in terms of presence of systemic features, surface area affected longest length axis multiply by the longest perpendicular axis measured in cm2, severity of swelling judged by clinician as any one of the following: mild, moderate or severe, intensity of erythema judged by clinician from a scale of 0 to 5, 0no erythema and 5severe and whether the function of the affected area is impaired 