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Table 1 Percentages of people with alcohol-related hospitalization in the surveys, and in the corresponding population data, and the resulting estimates of non-responders in the surveys

From: Non-response bias and hazardous alcohol use in relation to previous alcohol-related hospitalization: comparing survey responses with population data

Material Percent 95% CI1 Hospitalized n Total N
2006 cross-sectional survey 1.132 0.99, 1.22 362 32 626
2006 population data 1.64   22 298 1 358 176
2006 non-responders 2.483   511 20 597
2002-2007 longitudinal survey 0.924 0.78, 1.02 210 23 369
2007 population data 1.68   22 841 1 361 698
2007 non-responders 2.453   580 23 651
Both surveys 1.045 0.95, 1.14 572 55 995
Population data 1.66   22570 1 359 937
Non-responders 2.473   1119 45 262
  1. 1Confidence intervals are given for the survey responders, since it is their estimates that are being compared with the corresponding population parameters.
  2. 2 Since the surveys were stratified by gender, municipality and district, this estimate was weighted for sampling probability. The corresponding un-weighted estimate was 1.11 percent.
  3. 3 The estimate of the non-responders was based on un-weighted estimates of the responders. It was obtained by assuming that survey estimates correspond to population data.
  4. 4 The un-weighted estimate was 0.90 percent.
  5. 5 The un-weighted estimate was 1.02 percent.