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Table 2 Univariate and Multivariate Analysis for Influenza Associated Severe Acute Respiratory Illness, 2018/2019 Season, Yemen

From: Influenza circulating viruses, positivity rate and risk factors for influenza associated severe acute respiratory infection during 2018/2019 winter season, Yemen

Variables

Influenza Associated SARI

influenza Associated ILI

Univariate analysis

Multivariate analysis

167

244

Odds ratio (95% CI)

P value

Odds ratio (95% CI)

P value

Age

 < 5

33/167 (20)

48/244 (20)

2.2 (0.9–4.9)

0.058

2.8 (1.2–6.8)

0.026a

 5–< 25

11/167 (7)

35/244 (14)

Ref

Ref

 25–< 45

37/167 (22)

79/244 (32)

1.5 (0.7–3.2)

0.317

1.9 (0.8–4.5)

0.124

 45–< 65

41/167 (25)

46/244 (19)

2.4 (1.3–6.3)

0.010a

2.3 (0.9–5.7)

0.052

 ≥ 65

45/167 (27)

36/244 (15)

4.0 (1.8–9.0

0.001a

3.1 (1.2–7.8)

0.016a

Diabetes

50/167 (30)

14/244 (6)

7.0 (3.7–13.2)

 < 0.001a

4.7 (2.3–9.5)

 < 0.001a

Hypertension

26/167 (16)

6/244(2)

7.3 (2.9–18.2)

 < 0.001a

1.2 (0.3–4.1)

0.790

Heart disease

26/167 (16)

6/244(2)

7.3 (2.9–18.2)

 < 0.001a

3.1 (1.3–15.0)

0.018a

Renal diseases

24/167 (14)

13/244 (5)

2.9 (1,8–6.0)

0.001a

1.8 (0.7–4.1)

0.214

Respiratory

12/167 (7)

3/244 (1)

6.2 (1.7–22.7)

0.001a

5.0 (1.2–19.9)

0.021a

  1. aStatistically Significant, SARI, severe acute respiratory infection. ILI, influenza like illness