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Table 3 Presence, absence, and mean severity scores of individual ARI symptoms in study participants with RT-PCR confirmed influenza, stratified by age and influenza vaccination status (n = 324) 1

From: A cross-sectional analysis of symptom severity in adults with influenza and other acute respiratory illness in the outpatient setting

 

18-49 years

50-64 years

≥65 years

 
 

Vaccinated

Vaccinated

Vaccinated

 

Symptoms

Yes

No

Yes

No

Yes

No

p

 

(n = 52)

(n = 144)

(n = 43)

(n = 48)

(n = 27)

(n = 10)

 

Nasal congestion

2.15

1.95

1.74

1.97

1.89

2.13

0.128

  Present (%)

90

89

91

81

70

80

0.465

  Absent (%)

10

11

9

19

30

20

Sore throat

2.00

1.97

1.86

1.84

1.67

2.57

0.056

  Present (%)

87

76

67

77

56

70

0.112

  Absent (%)

13

24

33

23

44

30

Cough

2.39

2.18

2.30

2.47

2.41

2.80

0.046

  Present (%)

98

97

100

98

100

100

0.998

  Absent (%)

2

3

0

2

0

0

Wheezing

1.88

1.57

1.75

1.68

1.85

1.78

0.607

  Present (%)

46

53

65

52

48

90

0.045

  Absent (%)

54

47

35

48

52

10

Feverishness

2.17

2.17

1.87

2.11

1.70

2.63

0.016

  Present (%)

88

89

91

94

74

80

0.904

  Absent (%)

12

11

9

6

26

20

Headache

2.19

2.11

2.03

1.90

1.58

2.13

0.167

  Present (%)

83

82

77

88

70

80

0.504

  Absent (%)

17

18

23

13

30

20

Muscle aches

2.11

2.24

2.15

2.15

1.93

2.43

0.432

  Present (%)

87

88

77

96

56

70

0.163

  Absent (%)

13

12

23

4

44

30

Fatigue

2.40

2.34

2.48

2.40

2.25

2.50

0.558

  Present (%)

96

94

98

98

89

100

0.955

  Absent (%)

4

6

2

2

11

0

 
  1. 1Values for symptom severity scores are reported as mean and p-value, among participants where the symptom was present. Values for the presence/absence of each symptom are reported as percent of column total, and p-value for chi-square test comparing symptom between each age/vaccination group.