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

From: 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

Measures S3 S4 S5 S7 S8 S9 S10 S11 S12 S13 Missing rang%c Totally missing%
Anxietya 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
  1. Note “√” indicates that the measure was covered in the survey.
  2. 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.
  3. bThese two items were combined as “perceived relative susceptibility” in the analysis.
  4. cThe range of missing proportions across the covered surveys.