Changing Population Salt Consumption in Lithgow, Australia
17. november 2014 oppdatert av: Professor Bruce Neal, The George Institute
A Before After Comparison of the Effectiveness of a Community-based Salt Reduction Program Done in Lithgow, Australia
The objective of this study is to determine whether a community-based salt reduction program can reduce average salt consumption levels.
Baseline levels of salt consumption were measured in 2011, the salt reduction program was then implemented, and now in 2014 investigators are remeasuring salt consumption levels in the community.
The hypothesis investigators are testing is that the salt reduction program will have led to a change in salt consumption levels between 2011 and 2014.
The study is being done in Lithgow, a regional town in New South Wales , Australia.
Studieoversikt
Status
Fullført
Intervensjon / Behandling
Detaljert beskrivelse
The primary objective of this project is to determine whether there have been changes in average salt consumption levels in the Lithgow population from 2011 to 2014. The primary null hypothesis to be tested is that there will be no difference between the mean 24-hour urinary sodium excretion levels between 2011 and 2014.
The sample of 419 individuals with 24-hour urine samples in the baseline survey and 600 individuals in the follow-up survey will provide 80% power to detect a difference of 0.7 g/day salt between the mean levels of excretion before and after the intervention. There will be more than 95% power to detect a difference of 1.0 g/day salt or greater.
Studietype
Intervensjonell
Registrering (Faktiske)
991
Fase
- Ikke aktuelt
Kontakter og plasseringer
Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.
Studiesteder
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New South Wales
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Camperdown, New South Wales, Australia, 2050
- The George Institute for Global Health
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Deltakelseskriterier
Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
20 år og eldre (Voksen, Eldre voksen)
Tar imot friske frivillige
Nei
Kjønn som er kvalifisert for studier
Alle
Beskrivelse
Inclusion Criteria:
- All adults over the age of 20 years residing in the Lithgow area are eligible
- No exclusion based on inter-current illness, use of medications or any other aspect of demography or personal history.
Studieplan
Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Behandling
- Tildeling: N/A
- Intervensjonsmodell: Enkeltgruppeoppdrag
- Masking: Ingen (Open Label)
Våpen og intervensjoner
Deltakergruppe / Arm |
Intervensjon / Behandling |
|---|---|
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Eksperimentell: Salt reduction
Community-based salt reduction
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Andre navn:
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Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
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Urinary sodium excretion (mmol/l)
Tidsramme: up to 4 years
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A single 24-hour urine collection will be obtained with the first voided urine upon waking on the day of collection being discarded and participants then collecting all voided urine up to and including the first void the following morning.
The times at the beginning and the end of urine collection are recorded.
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up to 4 years
|
Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
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Sources of sodium
Tidsramme: up to 4 years
|
The multiple pass 24-hour dietary recall is used to determine all food and beverages consumed from midnight to midnight on the day before the interview, this method has been described in detail by prior reports.
Food model booklets are used to assist with the reporting of quantity and prompts provided by interviewers are used to probe for complete food descriptions, variable recipe ingredients, and food preparation including salt added during cooking and at the table.
Dietary data are entered into the nutrient analysis package FoodWorks Professional version 7. The food coding guidelines are used to code each food and beverage into major, sub-major and minor food categories.
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up to 4 years
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Knowledge, attitudes and behaviors towards salt intake
Tidsramme: up to 4 years
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The measurement of knowledge attitude and behaviors towards salt is based upon a questionnaire adapted from the World Health Organization/Pan American Health Organization protocol for population level sodium determination.
The questionnaire contains nine questions; four related to knowledge of personal consumption, recommended daily intake and possible harmful effects of salt and five assessing attitudes and behaviors to lowering salt intake.
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up to 4 years
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Andre resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
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Urinary iodine excretion (ug/l)
Tidsramme: up to 4 years
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UIE will be assessed in the spot urine samples of females aged 20-45 years old.
The measurement will be completed by using ammonium persulfate digestion prior to Sandell-Koltoff reaction in a microtitre plate format.
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up to 4 years
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Samarbeidspartnere og etterforskere
Det er her du vil finne personer og organisasjoner som er involvert i denne studien.
Publikasjoner og nyttige lenker
Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.
Generelle publikasjoner
- Land MA, Webster J, Christoforou A, Johnson C, Trevena H, Hodgins F, Chalmers J, Woodward M, Barzi F, Smith W, Flood V, Jeffery P, Nowson C, Neal B. The association of knowledge, attitudes and behaviours related to salt with 24-hour urinary sodium excretion. Int J Behav Nutr Phys Act. 2014 Apr 4;11(1):47. doi: 10.1186/1479-5868-11-47.
- Land MA, Webster J, Christoforou A, Praveen D, Jeffery P, Chalmers J, Smith W, Woodward M, Barzi F, Nowson C, Flood V, Neal B. Salt intake assessed by 24 h urinary sodium excretion in a random and opportunistic sample in Australia. BMJ Open. 2014 Jan 16;4(1):e003720. doi: 10.1136/bmjopen-2013-003720.
- Land MA, Jeffery P, Webster J, Crino M, Chalmers J, Woodward M, Nowson C, Smith W, Flood V, Neal B. Protocol for the implementation and evaluation of a community-based intervention seeking to reduce dietary salt intake in Lithgow, Australia. BMC Public Health. 2014 Apr 14;14:357. doi: 10.1186/1471-2458-14-357.
- Land MA, Wu JH, Selwyn A, Crino M, Woodward M, Chalmers J, Webster J, Nowson C, Jeffery P, Smith W, Flood V, Neal B. Effects of a community-based salt reduction program in a regional Australian population. BMC Public Health. 2016 May 11;16:388. doi: 10.1186/s12889-016-3064-3.
Studierekorddatoer
Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.
Studer hoveddatoer
Studiestart
1. mars 2011
Primær fullføring (Faktiske)
1. april 2014
Studiet fullført (Faktiske)
1. april 2014
Datoer for studieregistrering
Først innsendt
30. mars 2014
Først innsendt som oppfylte QC-kriteriene
2. april 2014
Først lagt ut (Anslag)
7. april 2014
Oppdateringer av studieposter
Sist oppdatering lagt ut (Anslag)
18. november 2014
Siste oppdatering sendt inn som oppfylte QC-kriteriene
17. november 2014
Sist bekreftet
1. november 2014
Mer informasjon
Begreper knyttet til denne studien
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- 2014079
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