TABLE 1.

Risk factors based on (Ashida et al., 2021; Pettersson et al., 2022) finding are summarized.

Risk factor	OR (95% CI)	Statistical significance
Brain stem invasion	4.28 (2.23–8.23) (Pettersson et al., 2022)	p < 0.0001 (Pettersson et al., 2022)
	3.38 (2.22–5.15) (Ashida et al., 2021)	p < 0.00001 (Ashida et al., 2021)
Midline localization	1.75 (1.15–2.67) (Ashida et al., 2021)	p = 0.009 (Ashida et al., 2021)
Tumor size	8.85 (1.30–60.16) (Pettersson et al., 2022)	p = 0.03 (Pettersson et al., 2022)
	4.09 (1.63–9.93) (Ashida et al., 2021)	p = 0.002 (Ashida et al., 2021)
Invasion of the 4th ventricle	12.84 (4.29–38.44) (Ashida et al., 2021)	p < 0.00001 (Ashida et al., 2021)
Invasion of the SCP	6.77 (2.35–19.48) (Ashida et al., 2021)	p = 0.0004 (Ashida et al., 2021)
Left-handedness	6.57 (1.25–34.44) (Pettersson et al., 2022)	p = 0.03 (Pettersson et al., 2022)
Incision of the vermis	5.44 (2.09–14.16) (Pettersson et al., 2022)	p = 0.0005 (Pettersson et al., 2022)
	2.61 (1.54–4.43) (Ashida et al., 2021)	p < 0.00001 (Ashida et al., 2021)
Diagnosis of medulloblastoma	3.26 (1.93–5.52) (Pettersson et al., 2022)	p < 0.0001 (Pettersson et al., 2022)
	4.3 (2.60–7.12) (Ashida et al., 2021)	p < 0.00001 (Ashida et al., 2021)

OR, odds ratio; CI, confidence interval; SCP, superior cerebellar peduncle.