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Table 5 Health indicators estimate comparisons by year, NSWPHS

From: Inclusion of mobile telephone numbers into an ongoing population health survey in New South Wales, Australia, using an overlapping dual-frame design: impact on the time series

Health indicators 2011 NSWPHS 2012 NSWPHS Dual-frame 2012 NSWPHS Landline frame Prevalence difference
2012 NSWPHS (dual frame) minus 2011 NSWPHS 2012 NSWPHS (landline frame) minus 2011 NSWPHS
% SE % % SE % % SE % Prev diff % (95%CI) p-value   Prev diff % (95%CI) p-value
Five or more drinks of alcohol in a day 11.3 1.10 11.1 0.59 9.4 0.81 -0.2 (0.4,-0.8) 0.432   -1.9 (-1.6, -2.2) 0.083  
More than two alcoholic drinks in a day 29.6 0.74 27.6 0.87 27.1 1.23 -2.0 (-2.14, -1.9) 0.092   -2.5 (-3.0, -2.0) 0.042 #
Recommended fruit intake 50.4 0.74 53.4 0.98 55.9 1.27 3.0 (2.75, 3.3) 0.016 * 5.5 (5.0, 6.0) <0.001 *
Recommended vegetable intake 8.4 0.35 10.0 0.60 12.3 0.94 1.6 (1.2, 2.0) 0.026 * 3.9 (3.2, 4.6) <0.001 *
Current smoking 14.7 0.55 17.1 0.75 14.4 0.92 2.4 (2.2, 2.6) 0.011 * -0.3 (-0.7, 0.1) 0.373  
Adequate physical activity 54.6 0.75 56.2 0.99 56.8 1.30 1.6 (1.4, 1.9) 0.224   2.2 (1.7, 2.7) 0.069  
Positive self-reported health status 80.3 0.56 82.4 0.60 80.6 0.95 2.1 (2.1, 2.2) 0.010 * 0.3 (-0.1, 0.7) 0.381  
Current asthma 11.3 0.46 10.1 0.52 12.6 0.97 -1.2 (-1.3, -1.1) 0.079   1.3 (0.7, 1.9) 0.122  
Ever diagnosed with diabetes 8.1 0.31 8.4 0.44 8.6 0.54 0.3 (0.1, 0.5) 0.573   0.5 (0.2, 0.9) 0.215  
Overweight or obese 52.2 0.76 49.7 1.00 53.9 1.35 -2.5 (-2.8,-2.3) 0.047 # 1.7 (1.1, 2.3) 0.138  
  1. NOTE *significantly (p < 0.05) higher than comparison group; #significantly (p < 0.05) lower than comparison group.