Table 2.

Estimates of the reproductive number the mean of the serial interval is 3.6 days with standard deviation of 1.6 days (7) or mean of 1.91 days and standard deviation of 1 days (10). Italicized results reflect results accounting for an 11% per day increase in reporting fraction starting April 13.

		4/25/09	4/26/09	4/27/09	4/28/09
${\widehat{R}}_0$ (Conf Interval); Mean SI=3.6 days	Original Data	3.48 (2.88, 3.72)	3.29 (2.85, 3.47)	2.87 (2.55, 3.06)	2.59 (2.31, 2.77)
		2.57 (2.39, 3.13)	2.48 (2.30, 2.81)	2.25 (2.04, 2.46)	2.05 (1.80, 2.16)
	Imputed Data	3.56 (2.90, 3.80)	3.65 (3.10, 3.88)	3.83 (3.46, 4.12)	3.53 (3.23, 3.70)
		2.61 (2.43, 3.19)	2.68 (2.50, 3.14)	2.78 (2.69, 3.23)	2.61 (2.47, 2.86)
	Augmented Data	3.62 (2.94, 3.89)	3.79 (3.27, 4.05)	4.11 (3.74, 4.42)	3.94 (3.72, 4.22)
		2.66 (2.48, 3.23)	2.79 (2.61, 3.26)	2.97 (2.88, 3.45)	2.88 (2.79, 3.19)
${\widehat{R}}_0$ (Conf Interval); Mean SI=1.91 days	Original Data	1.99 (1.77, 2.26)	1.86 (1.71, 2.08)	1.72 (1.55, 1.90)	1.63 (1.51, 1.80)
		1.76 (1.64, 2.11)	1.66 (1.54, 1.88)	1.54 (1.39, 1.71)	1.45 (1.32, 1.59)
	Imputed Data	2.03 (1.79, 2.31)	2.05 (1.85, 2.30)	2.22 (2.11, 2.53)	2.04 (1.97, 2.28)
		1.80 (1.68, 2.17)	1.78 (1.68, 2.09)	1.87 (1.85, 2.23)	1.74 (1.70, 2.00)
	Augmented Data	2.05 (1.80, 2.35)	2.11 (1.95, 2.38)	2.34 (2.27, 2.66)	2.20 (2.18, 2.45)
		1.82 (1.69, 2.16)	1.84 (1.75, 2.14)	1.97 (1.97, 2.32)	1.87 (1.85, 2.08)
Num Cases	Original Data	275	392	529	681
	Imputed Data	282	435	689	940
	Augmented Data	295.0	471.3	786.3	1130.6