Volume 13, Number 2—February 2007
Research
Code-based Syndromic Surveillance for Influenzalike Illness by International Classification of Diseases, Ninth Revision
Table 2
Match day | No. specimens† |
---|---|
Did not match (removed from study) | 1,153 |
Clinic day – 2 = specimen day | 47 |
Clinic day – 1 = specimen day | 125 |
Exact day match | 5,267 |
Clinic day + 1 = specimen day | 680 |
Clinic day + 2 = specimen day | 117 |
Total | 7,389 |
*ICD-9, International Classification of Diseases, Ninth Revision.
†No. specimens obtained by day of matching visit.
1Current affiliation: Tacoma–Pierce County Health Department, Tacoma, Washington, USA
2Current affiliation: US Census Bureau, Suitland, Maryland, USA
3Current affiliation: Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
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