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Table 1 Demographic characteristics of study participants in Guangzhou, 17–24 June 2013 (N = 1,450)

From: Attitudes, practices and information needs regarding novel influenza A (H7N9) among employees of food production and operation in Guangzhou, Southern China: a cross-sectional study

Characteristics No. % 95% CI Lower 95% CI Upper
Age group(years)     
   <25 1076 74.21 71.86 76.43
   25–40 312 21.52 19.45 23.74
   >40 62 4.28 3.32 5.48
sex     
   Male 464 32.00 29.62 34.48
   Female 986 68.00 65.52 70.38
Annual household income per capita     
   Less than $2,000 151 10.41 8.91 12.13
   $2,001–$6,000 577 39.79 37.27 42.37
   $6,001–$10,000 476 32.83 30.42 35.32
   $10,001–$20,000 180 12.41 10.78 14.25
   >$20,000 66 4.55 3.56 5.79
Residence time in Guangzhou     
   Less than 1 year 348 24.00 21.84 26.30
   1–3 years 279 19.24 17.26 21.39
   3 years 813 56.07 53.47 58.64
   Refused 10 0.69 0.35 1.31
Highest education     
   Non-educated 5 0.34 0.13 0.85
   Primary school graduate 7 0.48 0.21 1.04
   Middle school graduate 189 13.03 11.37 14.90
   High school graduate 560 38.62 36.11 41.19
   College: 1–3 years technical school training 283 19.52 17.53 21.67
   College: 4 years or more (college graduate) 400 27.59 25.31 29.98
   Master or doctor degree graduate 6 0.41 0.17 0.95
Living area     
   Suburban or rural 558 38.48 35.98 41.05
   Downtown 883 60.90 58.32 63.41
   Refused 9 0.62 0.30 1.22
  1. CI = Confidence Intervals.