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. Author manuscript; available in PMC: 2015 Jul 1.
Published in final edited form as: Stroke. 2014 May 27;45(7):2053–2058. doi: 10.1161/STROKEAHA.114.004695

Table 2.

Details of Regression Model 4.

Parameter
Estimate		 95% Confidence
Interval		 Z-value P-value
Intercept 0.1680 [−0.07, 0.41] 1.36 .172
Yrs.PS (yrs) 0.0338 [−0.43, 0.49] 0.14 .885
Yrs.PS2 0.0022 [−0.10, 0.10] 0.04 .966
ΔTime (10 hrs) 0.0983 [0.01, 0.19] 2.07 .038
ΔTime2 −0.0047 [−0.01, 0.00] −1.69 .089

Note. Parameter estimates for Yrs.PS in years and estimates for ΔTime in 10-hour units. We also tested the interaction of Yrs.PS2 and ΔTime2, which was not significant (p = 0.12), so the main effects model is presented.