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. Author manuscript; available in PMC: 2015 Nov 1.
Published in final edited form as: Virology. 2014 Sep 3;0:197–206. doi: 10.1016/j.virol.2014.07.026

Table 3.

Statistics related to the estimates of growth rates

Subtype (prior molecular rate) BSP Regression Slope conLog.growthRated conLog.t50
Slope 1a Intercept 1a Switch pointb Slope 2c Intercept 2c Mean 95%lower 95%upper Median
1a (9.1025E-4) 0.087 −166.658 1990.81 0.034 −60.4199 0.2295 0.1351 0.343 0.2232 34.335
1b (1.018E-3) 0.193 −428.18 1985.12 0.041 −63.23 0.3581 0.212 0.5203 0.3499 34.125
6a (1.1632E-3) 0.182 −381.24 1984.18 0.039 −57.11 0.3001 0.184 0.4233 0.2929 33.916
6e (1.1646E-3) 0.136 −283.02 1986.18 0.0292 −48.77 0.2494 0.1386 0.3702 0.2416 34.036
a

Estimated for the period of rapid exponential growth.

b

The best-fitting time point at which the sum of r2 of two regression analyses maximized, which divides the periods of rapid growth and continuous growth.

c

Estimated for the period of continuous growth from 1990-the present.

d

Estimated under the constant logistic model using BEAST.