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Table 4 Excess pneumonia and influenza mortality rate associated with influenza subtypes/lineages using different influenza proxies in registered Shanghai residents in 2010–2015, stratified by age

From: Excess pneumonia and influenza mortality attributable to seasonal influenza in subtropical Shanghai, China

  

Excess P&I mortality rate per 100,000 population

  

<60 years of age

≥60 years of age

  

Lag 0

Lag 1

Lag 2

Lag 0

Lag 1

Lag 2

  

ER

95% CI

ER

95% CI

ER

95% CI

ER

95% CI

ER

95% CI

ER

95% CI

Proxy: positive number

 

A (H1N1)

0.04

(0.01, 0.06)

0.04

(0.01, 0.06)

0.03

(0, 0.05)

0.4

(0.12, 0.69)

0.5

(0.24, 0.76)

0.46

(0.22, 0.75)

 

A (H3N2)

0.01

(−0.03, 0.04)

0.01

(−0.02, 0.05)

0.02

(−0.01, 0.05)

0.32

(−0.09, 0.71)

0.61

(0.24, 0.98)

0.72

(0.32, 1.08)

 

B (Victoria)

−0.01

(−0.06, 0.03)

−0.01

(−0.06, 0.02)

0

(−0.04, 0.03)

−0.26

(−0.69, 0.14)

−0.25

(−0.65, 0.11)

−0.18

(−0.58, 0.19)

 

B (Yamagata)

0.01

(−0.03, 0.03)

0

(−0.04, 0.03)

0

(−0.03, 0.03)

0.19

(−0.12, 0.5)

0.32

(0.01, 0.63)

0.45

(0.16, 0.73)

 

Influenza

0.04

(−0.04, 0.1)

0.04

(−0.04, 0.1)

0.05

(−0.02, 0.11)

0.65

(−0.13, 1.42)

1.15

(0.42, 1.85)

1.41

(0.75, 2.09)

Proxy: positive proportion

 

A (H1N1)

0.04

(0.01, 0.06)

0.04

(0.01, 0.06)

0.03

(0, 0.05)

0.57

(0.26, 0.86)

0.63

(0.34, 0.92)

0.58

(0.31, 0.85)

 

A (H3N2)

0.01

(−0.04, 0.05)

0.01

(−0.03, 0.05)

0.03

(−0.02, 0.06)

0.46

(−0.03, 0.96)

0.74

(0.28, 1.18)

0.85

(0.46, 1.3)

 

B (Victoria)

0

(−0.05, 0.04)

0

(−0.05, 0.04)

0.01

(−0.03, 0.05)

−0.04

(−0.56, 0.4)

−0.12

(−0.57, 0.32)

−0.31

(−0.78, 0.11)

 

B (Yamagata)

0

(−0.04, 0.04)

−0.01

(−0.04, 0.03)

0.01

(−0.03, 0.04)

0.41

(0.02, 0.82)

0.47

(0.09, 0.87)

0.6

(0.24, 0.95)

 

Influenza

0.05

(−0.06, 0.13)

0.05

(−0.06, 0.13)

0.07

(−0.01, 0.13)

1.37

(0.31, 2.35)

1.67

(0.78, 2.51)

1.68

(0.84, 2.51)

Proxy: LAB × ILI

 

A (H1N1)

0.03

(0, 0.05)

0.03

(0.01, 0.05)

0.02

(0, 0.04)

0.41

(0.17, 0.63)

0.39

(0.16, 0.59)

0.36

(0.15, 0.56)

 

A (H3N2)

0.01

(−0.03, 0.04)

0.01

(−0.02, 0.04)

0.03

(−0.01, 0.05)

0.46

(0.08, 0.82)

0.66

(0.31, 0.98)

0.72

(0.39, 1.05)

 

B (Victoria)

−0.01

(−0.05, 0.03)

0

(−0.04, 0.03)

0.01

(−0.03, 0.04)

−0.11

(−0.49, 0.25)

−0.21

(−0.59, 0.13)

−0.4

(−0.79, −0.06)

 

B (Yamagata)

0.01

(−0.03, 0.03)

0

(−0.03, 0.03)

0.01

(−0.03, 0.03)

0.35

(0.01, 0.67)

0.4

(0.07, 0.7)

0.5

(0.2, 0.78)

 

Influenza

0.03

(−0.04, 0.09)

0.04

(−0.03, 0.09)

0.06

(−0.01, 0.1)

1.08

(0.4, 1.76)

1.22

(0.57, 1.81)

1.17

(0.55, 1.76)

  1. P&I pneumonia and influenza, ER excess rate, LAB × ILI product of weekly proportion of specimens tested positive for influenza and influenza-like illness consultation rate, CI confidence interval