Results
In total, 1,156 units were visited and invited to participate
in the survey. There were 707 (61.2 %) units either
not at home or not responsive, even on second attempt.
Out of the 1,156 units, 240 units (20.8 %) consented and
completed the survey, and 18 % rejected participation in
the survey. The median age of the participants was
41.5 years old [Interquartile range (IQR): 32–52], 50.8 %
was female, 76.7 % was married, 66.3 % was Chinese,
75.8 % was Singaporean, and 55.4 % stayed in a four
room flat (Table 1). In addition, 50 % of the participants
had post-secondary education (defined as higher than
GCE ‘O’ level), 40 % had at least one comorbidity, and
the most common comorbidity was hypertension (14.2 %;
Table 1). The majority of the participants (60.4 %) had
three to five residing members, and 22.9 % had at least a
child below the age of five. Furthermore, 25 % of the participants
self-reported having at least one diarrhoea episode
in the past six month period before the survey day,
and about 30 % self-reported having at least one flu episode
over the same period (Table 1). The sampled population
had similar demographic profiles as the national
population (Table 1).