Cost for physician-diagnosed influenza and influenza-like illnesses on primary care level in Germany – results of a database analysis from May 2010 to April 2012

Table 1 Demographic and clinical characteristics^a - patients with influenza or ILI episodes between May 2010 and April 2012 in Germany

	Adults	Children
	N episodes = 21,039	N episodes = 7,107
Gender female % (n)	55.3 (11,629)	47.2 (3,353)
Age in years
Mean ± SD	45.8 ± 17.8	6.9 ± 3.6
Min - Max	17.0–101.8	1.1–16.0
Age groups % (n)
<5 years	0.0 (0)	33.7 (2,394)
5–16 years	0.0 (0)	66.3 (4,713)
17–59 years	79.2 (16,666)	0.0 (0)
≥60 years	20.8 (4,373)	0.0 (0)
Insurance status at index date % (n)
Statutory Health Insurance	93.9 (19,765)	92.2 (6,550)
Private insurance	6.1 (1,274)	7.8 (557)
Relevant pre-period risk factors^b,c (as defined by STIKO)
Weakened immune system
Cancer treatment (C00-C97)	1.9 (392)	0.1 (9)
HIV/AIDS (B20-B24)	0.1 (24)	0 (0)
Chronic illness
Any chronic disorders of respiratory organs (J45, J46, J44, J38, J35)	9.5 (1,995)	22.9 (1,629)
Any cardiovascular disorders (I10-15, I20-25, I26-I28, I30-I52, Z99.0-Z99.1)	28.5 (6,003)	0.8 (55)
Any cerebrovascular disorders (I60-I69, G45)	1.9 (397)	0.1 (5)
Diabetes and other metabolic diseases (E10-E14)	8.9 (1,876)	0.1 (7)
Hepatic disorders (B15-B19, K70, K75)	0.5 (114)	0.1 (6)
Renal disorders (N17- N19, Z99.2)	0.1 (196)	<0.1 (1)
Any neurological disorders (G04-G05, G20-G21,G30, G35, G40-G41)	1.4 (292)	0.8 (57)
Proportion of episodes with at least one of the above mentioned pre-period risk factors plus age ≥60 years in the adult patient group % (n)	38.8 (8,165)	24.3 (1,727)

^aAnalysis at episode level; ^bPre-period: 15–365 days before the index-date of the episode; ^cRelevant diagnoses were documented as complications/severe symptoms of influenza if they occurred within 14 days before or after the index date. Equivalent diagnoses which could be both risk factors and complications were unified within the “risk factor” term and documented as such if they were made within 365 days before the index date.
HIV/AIDS Human immunodeficiency virus/acquired immune deficiency syndrome, ILI Influenza-like illness, SD Standard Deviation, STIKO German Standing Committee on Vaccination

ISSN: 1471-2458