PCT < 0.5 µg/L %

PCT ≥ 0.5 µg/L %

p-value

Patients

57.5

42.1

0.0001

Gender

Male

59.2

64.7

Female

47.8

35.3

n.s.

Blood culture

Blood culture

21.7

35.3

No blood culture

78.3

64.7

n.s.

Streptococcus A-test

Positive

0

0

Negative

46.2

53.8

n.s.

Influenza-virus-PCR

Negative

54.8

45.2

n.s.

Chest X-ray

Infiltration

66.7

33.3

No infiltration

0

0

n.s.

Diagnoses

Infection of the upper airways

54.6

56.2

Tonsillopharyngitis

22.7

18.8

Pneumonia

18.2

18.8

Obstruktive bronchitis

4.5

6.2

Total

54.6

37.5

n.s.

Therapy

Antibiotics

47.8

64.3

No antibiotics

52.2

35.7

n.s.

Therapy

<5 days

22.7

37.5

≥ 5 days

22.7

25.0

No antibiotics

54.6

37.5

n.s.

Therapy (days)

No/prematurely terminated therapy ≤5 days

77.3

62.5

Therapy ≥5 Tage

22.7

37.5

n.s.