Burden of self-reported acute gastrointestinal illness in China: a population-based survey

BMC Public Health

Table 4 Descriptive statistics of acute gastrointestinal illness following the proposed standard case definition of acute gastrointestinal illness ^a in China, 2010–2011

Incidence per person-year (95% CI)	0.57 (0.56–0.57)
Incidence per person-year in males	0.53
Incidence per person-year in females	0.61
Mean age of cases (years)	44
Mean duration of illness (days)^b	2.1
Cases with bloody diarrhoea (%)	2.66
Cases who sought medical care (%)	55.94
Cases submitting a stool sample for testing (%)	18.14
Cases with respiratory symptoms (%)^c	–
Cases with symptoms still ongoing at time of interview (%)	9.3

^a Acute gastrointestinal illness was defined as diarrhoea of ≥ 3 loose stools or any vomiting in a 24-hour period.
^b Information on the duration of vomiting was not collected in the survey. Mean duration calculated by averaging the duration of illness among those had diarrhoea, regardless of whether they were still ongoing at the time of data collection.
^c Data not collected. Survey respondents were not asked about respiratory symptoms.

ISSN: 1471-2458