Long-Term Effects of Nilvadipine against Progression of the Central Visual Field Defect in Retinitis Pigmentosa: An Extended Study

Table 4

Results of step-wise multivariate regression analysis for factors independently contributing to final MD slope (Analysis 3).

Independent values	Right eyes	Left eyes
	b value (P value)	b value (P value)
Nilvadipine treatment	0.715 (0.036*)	0.779 (0.042*)
Observation period	0.015 (0.047*)	Excluded (0.113)
Patients’ age at enrollment	Excluded (0.923)	Excluded (0.404)
Patients’ age at initial symptoms or diagnosis	Excluded (0.903)	Excluded (0.254)
Gender	Excluded (0.622)	Excluded (0.174)
Initial MD values	Excluded (0.927)	Excluded (0.681)

Significance: ^∗𝑃<0.05.