Table 2.

Results of the MR study testing causal association between oily fish/raw vegetables consumption and NMOSD.

Food intakes	Method	Number of SNPs	Beta	OR (95% CI)	P	P for heterogeneity test	P for MR-Egger intercept	P for MR-PRESSO (0 outliers)
Oily fish consumption	Inverse variance weighted	41	− 5.103	0.006 (4.18 × 10−5–0.885)	0.045	0.088	0.003	0.081
	MR Egger	41	− 36.263	1.78 × 10−16 (2.60 × 10−25–1.22 × 10−7)	0.001	0.33
	Weighted median	41	− 4.340	0.013 (2.35 × 10−5–7.225)	0.178
Raw vegetables consumption	Inverse variance weighted	23	− 12.151	5.28 × 10−6 (4.67 × 10−11–0.598)	0.041	0.118	0.988	0.133
	MR Egger	23	− 11.714	8.18 × 10−6 (6.65 × 10−33–1.01 × 1022)	0.716	0.092
	Weighted median	23	− 9.133	0.0001 (1.36 × 10−11–858.05)	0.256