Table 6. Correlation between SEQ before treatment and safety and efficacy (Pearson Chi-Square).

			Safety			Efficacy
			Below cut-off (< = 0.85)	Above cut-off (>0.85)	Sig. (2-sided)	Below cut-off (< = 0.8)	Above cut-off (>0.8)	Sig. (2-sided)
SEQ before treatment	0 to (-3) D	Percentage	198	2100	p = 0.002	188	2110	p<0.001
		Count	8.60%	91.40%		8.20%	91.80%
	(-3.01) to (-6) D	Percentage	311	3958		458	3811
		Count	7.30%	92.70%		10.70%	89.30%
	(-6.01) to (-9) D	Percentage	143	1532		386	1289
		Count	8.50%	91.50%		23.00%	77.00%
	SEQ >-9 D	Percentage	63	470		197	336
		Count	11.80%	88.20%		37.00%	63.00%

SEQ = spherical equivalent

P-value indicates association between SEQ before treatment and outcome above/below cut-off.