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Table 1 Comparison of mean values, (standard deviations), and range for LV mass (g), LV mass index (g/m2), and LV mass/height (g/m) for digital and strip chart readings, and the mean differences between the two methods.

From: Comparison of m-mode echocardiographic left ventricular mass measured using digital and strip chart readings: The Atherosclerosis Risk in Communities (ARIC) study

Mean Values Digital Strip Chart Mean Difference P value
LV Mass (g)     
   Mean (SD) 197.8 (57.8) 186.9 (54.4) -9.1 (10.8) 0.36
   Range 69.0–352.0 80.4–326.7 -58.3–40.6  
LV Mass (g/m2)     
   Mean (SD) 101.6 (21.0) 96.9 (20.1) -4.6 (8.6) 0.37
   Range 35.0–162.1 40.8–160.1 -32.4–25.2  
LV Mass (g/m)     
   Mean (SD) 116.7 (26.8) 111.4 (31.8) -5.2 (9.9) 0.36
   Range 40.4–204.1 47.0–185.6 -34.7–25.2