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Table 2 Main characteristics of influenza or I-LSs episodes registered in the questionnaire

From: Influenza and influenza-like syndromes: the subjects’ beliefs, the attitude to prevention and treatment, and the impact in Italian general population

 

Total

N = 1,202

Respondents with influenza or I-LSs episodes

688 (57.2%)

Episodes per year ─ mean (range)

1.81 (1.55; 2.06)

 1 episode ─ N (%)

356 (52.4%)

 2–3 episodes ─ N (%)

298 (43.9%)

  > 3 episodesa ─ N (%)

25 (3.7%)

Duration ─ mean (range)

5.27 (2.41; 8.12)

  < 7 days ─ N (%)

526 (76.5%)

 7–15 days ─ N (%)

162 (23.5%)

Subjects requiring GP ─ N (%)

383 (55.7%)

Subjects requiring ER ─ N (%)

19 (2.8%)

Hospitalizations ─ N (%)

6 (0.9%)

  < 7 days ─ N (%)

3 (50.0%)

 16–30 days ─ N (%)

3 (50.0%)

  1. I-LSs influenza-like syndromes, GR general practitioner, ER emergency room
  2. aA maximum number of 6 episodes per year was assumed; this limit was estimated fitting a Poisson distribution on the frequencies recorded in the questionnaires