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Table 3 Estimated pooled prevalence of positive pools: - by frequentist method (EPP) and minimum infection rate (MIR)

From: Prevalence of tick borne encephalitis virus in tick nymphs in relation to climatic factors on the southern coast of Norway

Site

Number of pools*

Number of positive pools detected by Real-time PCR

Estimated pooled-prevalence by frequentist method on Real-time PCR (95% CI)

Estimated pooled prevalence by Minimum infection rate level (MIR) (%)

S1

90a

1

0.11 (0–0.62)

0.11

S2

73

4

0.56 (0.28–1.43)

0.55

S3

62

4

0.66 (0.018–1.69)

0.65

S4

74

5

0.70 (0.23–1.62)

0.68

S5

78a,b

9

1.22 (0.56–2.30)

1.15

S6

92

4

0.44 (0.12–1.13)

0.43

S7

94b

2

0.21 (0.03–0.77)

0.21

  1. * All pools consist of 10 nymphs.
  2. a site S1 is statistically significant different from site S5; p = 0.006.
  3. b Site S7 is statistically significant different from site S5; p = 0.014.