Table 1.

The Cochran’s Q test of Mendelian randomization analyses for BMD and postural instability.

	Outcome	SNPs selection	Method	Cochran’s Q test
				Q	Q_df	Q_pval
FN-BMD	Postural instability	Complete	IVW	36.118	19	0.010*
			MR Egger	35.250	18	0.008*
		Steiger filtering	IVW	34.092	18	0.012*
			MR Egger	33.040	17	0.011*
LS-BMD		Complete	IVW	24.463	21	0.271
			MR Egger	24.376	20	0.226
		Steiger filtering	IVW	23.842	19	0.202
			MR Egger	23.772	18	0.164
FA-BMD		Complete	IVW	8.548	2	0.013*
			MR Egger	0.691	1	0.405
		Steiger filtering	IVW	8.548	2	0.013*
			MR Egger	0.691	1	0.405
FN-BMD (removed)	Postural instability	Steiger filtering	IVW	27.404	17	0.077
			MR Egger	27.426	16	0.104