highly significantp < 0.0001
Analysis of attrition revealed a highly significant divergence, which we have termed the lethal split (x 2 = 27.252, p < 0.0001; Table 1 ): Non-diabetic attrition (n = 52): predominantly attributable to discharge against medical advice (DAMA). 94.2% (n = 49) left against medical advice, and these patients had a low baseline radiological severity (median Rx 0.0).