Table 1.

Data streams, temporal data elements, and episode counts for space-time permutation scan statistic analyses.

Data stream: abbreviation	Data stream: full explanation	Temporal data element (i.e., date of what event?)	Episodes in baseline period (5/20/07– 9/29/07)	Episodes in surveillance period (9/30/07– 5/17/08)	Sunday of peak week of surveillance period (2008)	Episodes in peak week of surveillance period
AC−F	ILI in ambulatory care setting	Encounter	83,560	288,612	2/10	14,847
AC+F	ILI in ambulatory care setting with fever		8,039	30,490	2/10	2,276
ED−F	ILI in emergency department setting		5,763	20,274	2/10, 2/17 *	1,088
ED+F	ILI in emergency department setting with fever		1,193	4,912	2/17	321
Admissions	P&I hospital inpatient admissions	Admission	1,600	4,455	2/17	212
Discharges	P&I hospital inpatients with a primary discharge diagnosis of P&I		1,073	3,302	2/17	157
Rx	Antiviral (amantadine, oseltamivir) dispensings	Dispensing	342	3,271	2/17	436
Tests	RT-PCR tests ordered	Specimen collection	8	13,785	2/3	1,333
FluA	RT-PCR tests positive for influenza type A		0	2,484	2/3	411
FluB	RT-PCR tests positive for influenza type B		0	1,691	2/10	233

^*same case count, both weeks