Table 3.

Missing feature analysis per dataset.

Group	n	Survived (yes/no)	Gender (male/female)	Onset (spinal/bulbar)	Age (years)	Symptom duration (months)	Baseline weight (kg)	Baseline ALSFRS (score)	Baseline ALSFRS decline rate (score/month)	1-year ALSFRS (score)
High survival rate zone	1,525	1,378/147	1,189/336	1,187/338	$54.1\pm 9.7$ (22:78)	$16.7\pm 9.6$ (2.9:59.8)	$82.5\pm 15.1$ (46:148.6)	$35.4\pm 2.2$ (27:40)	$-0.34\pm 0.22$ ($-$1.46:0)	$25.1\pm 10.6$ (0:40)
Intermediate survival rate zone	1,524	1,219/305	899/625	1,171/353	$56.4\pm 12.1$ (18:81)	$21.2\pm 12.7$ (3.1:140.4)	$70.8\pm 12.5$ (30:122.5)	$31.3\pm 2.2$ (25:39)	$-0.56\pm 0.34$ ($-$2.38:$-$0.02)	$18.3\pm 11.1$ (0:39)
Low survival rate zone	1,525	892/633	792/733	1,234/291	$58.3\pm 11.6$ (25:80)	$23.7\pm 13.5$ (0.5:86.7)	$69.6\pm 15.3$ (36.5:138.9)	$23.9\pm 4.2$ (7:35)	$-0.92\pm 0.63$ ($-$6.09:$-$0.15)	$9.0\pm 9.4$ (0:37)
Overall	4,574	3,489/1,085	2,880/1,694	3,592/982	$56.3\pm 11.3$ (18:81)	$20.5\pm 12.4$ (0.5:140.4)	$74.3\pm 15.5$ (30:148.6)	$30.2\pm 5.6$ (7:40)	$-0.61\pm 0.49$ ($-$6.09:0)	$17.6\pm 12.3$ (0:40)

Numerical predictors are described using mean ± standard deviation (range).