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How well does a telephone questionnaire measure drinking water intake?
| Content Provider | Scilit |
|---|---|
| Author | Robertson, Brent Forbes, Andrew Sinclair, Martha Black, Jim Veitch, Mark Pilotto, Louis Kirk, Martyn Fairley, Christopher K. |
| Copyright Year | 2000 |
| Description | Journal: Australian and New Zealand journal of public health Few studies have assessed the validity or reliability of drinking water intake estimations. In studies investigating potential waterborne disease, this is very important.We carried out a validity and reliability study to evaluate water intake estimations. The validity part of the study compared a telephone questionnaire to a diary. The reliability part of the study compared two telephone questionnaires.253 participants were recruited. The most commonly consumed water intake categories were plain and boiled tap water. For persons aged less than 12 years, the median volume of plain water consumption was 2.9 glasses/day according to the diary. For persons aged 12 years and over, the median volume of plain water consumption was 3.0 glasses/day and for boiled water 3.0 glasses/day according to the diary. There was negligible systematic over or under reporting by participants for the telephone questionnaire in comparison to the diary and for the comparison of both telephone questionnaires. Water intake estimates were converted to categorical variables and the per cent agreement and weighted kappa statistics were calculated. For both the validity and reliability parts of the study the per cent agreement was 57-78% and the weighted kappa was 0.57-0.81.Water intake estimates show only moderate levels of validity and reliability when using a telephone questionnaire in comparison to a diary.Investigators of potential waterborne disease or nutritional research should exercise some caution in drawing conclusions from minor differences in drinking water intake that are obtained from a telephone questionnaire. |
| Related Links | http://onlinelibrary.wiley.com/doi/10.1111/j.1467-842X.2000.tb00528.x/pdf |
| Ending Page | 622 |
| Page Count | 4 |
| Starting Page | 619 |
| ISSN | 13260200 |
| e-ISSN | 17536405 |
| DOI | 10.1111/j.1467-842x.2000.tb00528.x |
| Journal | Australian and New Zealand journal of public health |
| Issue Number | 6 |
| Volume Number | 24 |
| Language | English |
| Publisher | Wiley-Blackwell |
| Publisher Date | 2000-12-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Australian and New Zealand journal of public health Public, Environmental and Occupational Health |
| Content Type | Text |
| Resource Type | Article |
| Subject | Public Health, Environmental and Occupational Health |
