Table 1. Creatine kinase (CK) results in the 1015 Euro-DEN presentations.

CK (IU/L)	≤ 250 IU/l	250–1500 IU/l	1501–10000 IU/l	CK >10000 IU/l	Total
n	547 (53.9%)	375 (36.9%)	69 (6.8%)	24 (2.4%)	1015 (100%)
Min	30	252	1522	10036	30
Max	250	1397	9441	169700	169700
Median	132.0	441.0	2595.0	21934.0	228.0
IQR	94.0–183.0	319.0–684.5	1986.0–4030.0	16760.0–63640.0	124.0–488.0