Anxiety, worry and cognitive risk estimate in relation to protective behaviors during the 2009 influenza A/H1N1 pandemic in Hong Kong: ten cross-sectional surveys

Table 1 Psychological measures and their proportions of missing data throughout the 10 surveys

Measures	S3	S4	S5	S7	S8	S9	S10	S11	S12	S13	Missing rang%^c	Totally missing%
Anxiety^a	√	√	√	√	√	√	√	√	√	√	0.20–1.29	0.65
Anticipated worry	√	√	√	√	√	√	√	√	√	√	0.10–1.41	0.59
Experienced worry	√	√	√	√	√	√	√	√	√	√	0–0.21	0.13
Current worry						√	√	√	√	√	0.50–1.12	0.73
Perceived absolute susceptibility	√	√	√	√	√	√	√	√	√	√	1.02–6.63	5.63
Perceived relative susceptibility (perceived personal likelihood of A/H1N1 infection relative to a general person)^b	√	√	√	√	√	√	√				5.08–7.41	5.82
Perceived relative susceptibility (Perceived personal likelihood of A/H1N1 infection relative to a general person of similar age and gender)^b								√	√	√	5.17–5.94	5.44
Perceived A/H1N1 severity relative to SARS	√	√	√	√	√	√	√	√	√	√	0.60–2.40	1.50
Perceived A/H1N1 infectivity relative to seasonal flu						√	√	√	√	√	1.93–4.13	3.04

Note “√” indicates that the measure was covered in the survey.
^aThe measure of anxiety state included ten items asking about ten general feeling statements and thereby the proportions of missing data for anxiety in the table were the highest proportion of missing data of the item among the ten statement items.
^bThese two items were combined as “perceived relative susceptibility” in the analysis.
^cThe range of missing proportions across the covered surveys.

ISSN: 1471-2334