Correlation between intradialytic blood pressure variability and cognitive impairment in patients on maintenance hemodialysis

Table 3 The result of the two-piecewise linear regression model

Outcome	OR (95% CI)	P-value
Fitting model by stand linear regression	1.49 (0.96, 2.30)	0.075
Fitting model by two-piecewise linear regression
Inflection point
< 7.52	0.43 (0.15, 1.26)	0.125
≥ 7.52	4.10 (1.61, 10.46)	0.003
P for log-likelihood ratio test		0.008

ISSN: 1471-2369