A Predictive Model and Survival Analysis for Tube Feeding in ALS Patients: A Prospective Cohort Study in a Chinese ALS Clinic

Figure 2

A nomogram for tube feeding prediction of ALS patients. To use the nomogram, mark patient values at each axis, draw a straight line perpendicular to the point axis, and sum the points for all variables. Next, mark the sum on the total point axis and draw a straight line perpendicular to the probability axis. For example, the patient had 1 of bulbar score, a bulbar involvement at baseline, 1.76 of ALSFRS-R slope, and without a history of ischemic stroke. To use the nomogram, red lines and arrows are drawn upward to determine the points received by bulbar score, bulbar involvement at baseline, ALSFRS-R slope, and history of ischemic stroke; the sum (about 114) of these points is located on the total point axis, and a line is drawn downward to the probability axes to determine the tube feeding-free probability of 1 year (about 89%) and 2 years (about 20%).