- ICH GCP
- Registr klinických studií v USA
- Klinická studie NCT03431012
Improving Communication During a Pandemic Flu Outbreak
Přehled studie
Postavení
Podmínky
Intervence / Léčba
Detailní popis
Background: In 2009, a new strain of influenza virus, called pandemic influenza A(H1N1)pdm09, was detected in humans. During the pandemic in 2009/2010, antiviral medications were prescribed both as prophylaxis and treatment for influenza. However, many people, including those with chronic health conditions, did not used the antivirals as prescribed. This study focused on adherence to antivirals used as prophylaxis, as this is a key preventative stage before any vaccine can be available to the public. To ensure protection of public health during public health emergencies, such as pandemic flu, it is essential that the general public follow the health advice received. Therefore, future risk communications about the use of antivirals for pandemic influenza will need to address the barriers and facilitators of adherence.
This study investigated the effect of theory-based and evidence-based health messages, which promoted the use of antivirals as prophylaxis for pandemic influenza, on intentions to use antivirals. In particular, using hypothetical scenarios, the investigators tested whether written health communications about pandemic flu and recommended preventative medication (i.e. a prophylactic treatment with antivirals) had an effect on study participants' beliefs about the pandemic flu and the advice received, and their intention to adhere to the recommendation.
The linguistic manipulation used in the present study was based on an adaptation of a successful manipulation carried out by McGlone et al. (2013), who found that using the virus agency assignment in medical factsheets increased students' perception of susceptibility to and worry about the virus A/H1N1, perception of the severity of the consequences of catching the virus, perception of efficacy of the vaccine and reported intention to get the vaccine compared to the human agency assignment. The investigators wanted to test whether these results could be replicated in the context of taking antivirals for pandemic flu, using a more representative sample of the general population and controlling for baseline intentions.
For what concerns the framing of the side effects, research shows that the way information on medication side-effects is presented affects people's intentions to accept the recommended medications. The same side-effect likelihood can be expressed in a positively framed message (i.e. 90% of people will not develop side-effects) or in negatively framed message (i.e. 10% of people will develop side-effects). Although a previous meta-analysis (Moxey et al. 2003) found no significant framing effect on either actual immunization or behavioural intention, it found that positively framed information increased positive attitudes toward immunization and perception of the benefits of immunization, decreased expectation of side-effects and led to a more realistic understanding of the side-effects of influenza vaccines.
In addition, the health messages used in this study targeted specific variables, which have been in the past associated with higher adherence to antivirals for pandemic influenza. In particular, a recently published systematic review (Smith et al. 2016) investigated the factors affecting adherence to antivirals for influenza, including pandemic flu. They included 26 studies, of which 23 assessed pandemic influenza. Although many of the reviewed studies had serious methodological flaws, the review identified several psychosocial factors associated with adherence to antivirals prescribed as prophylaxis for pandemic flu. In particular, 11 studies investigated actual adherence to prophylactic antivirals. These studies showed that actual adherence was associated with previous adherence to other preventative measures for pandemic flu, beliefs that the recommended prophylactic measures were necessary and having discussed taking oseltamivir, a commonly used antiviral, with someone who had not experienced side effects. Although only one study found that the presence of side-effects was a significant predictor of non-adherence, the occurrence of side-effects was the most commonly self-reported reason for the discontinuation of oseltamivir. The review also included 8 studies investigating psychosocial predictors of intention to adhere: for instance, higher perceived susceptibility to the pandemic flu, higher perceived severity of pandemic flu, knowledge of pandemic flu, higher self-efficacy and response efficacy, and having previously accepted the flu vaccine were all associated with higher adherence intentions.
Methods: In May/June 2016 the investigated conducted an online experiment. After reading a hypothetical pandemic flu scenario, 349 adult UK residents were randomly allocated to one of four conditions, defined by a 2x2 (agency assignment × attribute framing of side effects) factorial design. Each condition presented messages describing the pandemic flu using linguistic expressions that assigned agency to either the humans (HA: human agency) or the virus itself (VA: virus agency), whilst describing the antivirals side effects in terms of the chances of either experiencing (NF: negative framing) or not experiencing side effects (PF: positive framing). Although presented with different framings the health messages provided equivalent information that targeted specific predictors of adherence. Participants were blinded to group assignment. Intentions to use the antivirals and potential mediating factors were measured. The aim was to understand the potential behavioural impact of the four health messages developed and to better understand the factors influencing adherence intentions.
Typ studie
Zápis (Aktuální)
Fáze
- Nelze použít
Kritéria účasti
Kritéria způsobilosti
Věk způsobilý ke studiu
Přijímá zdravé dobrovolníky
Pohlaví způsobilá ke studiu
Popis
Inclusion Criteria:
- To be eligible to participate, respondents had to be members of the UK general public in the adult age range (18-65 years), and be fluent in English.
Exclusion Criteria:
- non-UK residents
- younger than 18 or older than 65
- not fluent in English
Studijní plán
Jak je studie koncipována?
Detaily designu
- Primární účel: Prevence
- Přidělení: Randomizované
- Intervenční model: Faktorové přiřazení
- Maskování: Singl
Zbraně a zásahy
Skupina účastníků / Arm |
Intervence / Léčba |
---|---|
Experimentální: Virus Agency/Negative Attribute Framing
Participants in this condition, after reading a hypothetical scenario, received health messages describing the pandemic flu and the efficacy of the antivirals using linguistic expressions that assigned transmission to the pandemic flu virus itself (Virus Agency Assignment framing), whilst describing the side effects of the antivirals in terms of chances of experiencing side effects after using them (Negative Framing).
|
Linguistic framing used in written health messages.
Each version of the messages described the pandemic flu and the efficacy of the antivirals using linguistic expressions that assigned transmission to either humans (HA: 'You can contract the virus when you touch…') or the pandemic flu virus itself (VA: 'It can infect you when you touch…')
Ostatní jména:
Linguistic framing used in written health messages.
Each message described the side effects of the antivirals in terms of chances of either experiencing (negative framing: 'Uncommon side effects (10% of people will be affected)') or not experiencing side effects (positive framing: 'Uncommon side effects (90% of people will not be affected)') after using them.
Ostatní jména:
|
Experimentální: Human Agency/Negative Attribute Framing
Participants in this arm, after reading a hypothetical scenario, received a health message describing the pandemic flu and the efficacy of the antivirals using linguistic expressions that assigned transmission to humans (Human Agency Assignment framing), whilst describing the side effects of the antivirals in terms of chances of experiencing side effects after using them (Negative Framing health messages).
|
Linguistic framing used in written health messages.
Each version of the messages described the pandemic flu and the efficacy of the antivirals using linguistic expressions that assigned transmission to either humans (HA: 'You can contract the virus when you touch…') or the pandemic flu virus itself (VA: 'It can infect you when you touch…')
Ostatní jména:
Linguistic framing used in written health messages.
Each message described the side effects of the antivirals in terms of chances of either experiencing (negative framing: 'Uncommon side effects (10% of people will be affected)') or not experiencing side effects (positive framing: 'Uncommon side effects (90% of people will not be affected)') after using them.
Ostatní jména:
|
Experimentální: Human Agency /Positive Attribute Framing
Participants in this arm, after reading a hypothetical scenario, received a health message describing the pandemic flu and the efficacy of the antivirals using linguistic expressions that assigned transmission to humans (Human Agency Assignment framing), whilst describing the side effects of the antivirals in terms of chances of not experiencing side effects after using them (Positive Framing).
|
Linguistic framing used in written health messages.
Each version of the messages described the pandemic flu and the efficacy of the antivirals using linguistic expressions that assigned transmission to either humans (HA: 'You can contract the virus when you touch…') or the pandemic flu virus itself (VA: 'It can infect you when you touch…')
Ostatní jména:
Linguistic framing used in written health messages.
Each message described the side effects of the antivirals in terms of chances of either experiencing (negative framing: 'Uncommon side effects (10% of people will be affected)') or not experiencing side effects (positive framing: 'Uncommon side effects (90% of people will not be affected)') after using them.
Ostatní jména:
|
Experimentální: Virus Agency /Positive Attribute Framing
Participants in this arm, after reading a hypothetical scenario, received a health message describing the pandemic flu and the efficacy of the antivirals using linguistic expressions that assigned transmission to the pandemic flu virus itself (Virus Agency Assignment framing), whilst describing the side effects of the antivirals in terms of chances of not experiencing side effects after using them (Positive Framing).
|
Linguistic framing used in written health messages.
Each version of the messages described the pandemic flu and the efficacy of the antivirals using linguistic expressions that assigned transmission to either humans (HA: 'You can contract the virus when you touch…') or the pandemic flu virus itself (VA: 'It can infect you when you touch…')
Ostatní jména:
Linguistic framing used in written health messages.
Each message described the side effects of the antivirals in terms of chances of either experiencing (negative framing: 'Uncommon side effects (10% of people will be affected)') or not experiencing side effects (positive framing: 'Uncommon side effects (90% of people will not be affected)') after using them.
Ostatní jména:
|
Co je měření studie?
Primární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
---|---|---|
Change in Intentions to Take Antivirals for Pandemic Flu
Časové okno: Straight after exposure to the health messages
|
Mean adherence intentions post- exposure to the health information in the 4 groups.
Intentions were measured by self-report items: participants were asked to agree with three statements about their intentions to take antivirals as recommended in the hypothetical scenario (on 9-point scale, where 1=strongly disagree to 9=strongly agree).
The scores reported below represent a composite variable 'change in intentions', which reflects the average of the three items that compose it.
|
Straight after exposure to the health messages
|
Sekundární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
---|---|---|
Worry of the Pandemic Flu Threat
Časové okno: At 20 minutes (i.e. straight after exposure to the health messages)
|
Measured by self-report items adapted from Witte et al. (2001): participants were asked to agree with two statements about their perceived worry on 9-point scale, from 1=strongly disagree to 9=strongly agree.
Higher scores indicate higher levels of reported worry about pandemic flu threat.
This is a composite variable reflecting the average of the items that compose it.
|
At 20 minutes (i.e. straight after exposure to the health messages)
|
Perceived Susceptibility to the Pandemic Flu
Časové okno: At 20 minutes (i.e. straight after exposure to the health messages)
|
Measured by self-report items: participants were asked to state how likely they were to get sick with pandemic flu, had they not taken prophylactic medication o a 9-point scale, where 1=not likely at all, to 9=extremely likely.
|
At 20 minutes (i.e. straight after exposure to the health messages)
|
Perceived Severity of the Pandemic
Časové okno: At 20 minutes (i.e. straight after exposure to the health messages)
|
Measured by one self-report item (adapted from Witte et al. (2001): participants were asked to agree with a statement about their perception of the severity of the pandemic flu on 9-point scale, from 1=strongly disagree to 9=strongly agree.
Higher scores indicate higher levels of perceived severity of the pandemic flu threat.
|
At 20 minutes (i.e. straight after exposure to the health messages)
|
Perceived Self-efficacy
Časové okno: At 20 minutes (i.e. straight after exposure to the health messages)
|
Measured by one self-report item (adapted from Witte et al. (2001): participants were asked to agree with a statement about their perceived ability to take the antivirals as recommended on 9-point scale, from 1=strongly disagree to 9=strongly agree.
Higher scores indicate higher levels of reported self-efficacy.
|
At 20 minutes (i.e. straight after exposure to the health messages)
|
Perceived Efficacy of the Antivirals
Časové okno: At 20 minutes (i.e. straight after exposure to the health messages)
|
Measured by two self-report items (adapted from Godinho et al. (2016): participants were asked to agree with two statements about their perception of the efficacy of the antivirals against pandemic flu on 9-point scale, from 1=strongly disagree to 9=strongly agree.
Higher scores indicate higher levels of perceived efficacy of the antivirals.
This is a composite variable reflecting the average of the items that compose it.
|
At 20 minutes (i.e. straight after exposure to the health messages)
|
Perceived Response Costs
Časové okno: At 20 minutes (i.e. straight after exposure to the health messages)
|
Measured by self-report items adapted from Godinho et al. (2016): participants were asked to agree with four statements about their beliefs about the side effects and negative consequences of using antivirals on 9-point scale, from 1=strongly disagree to 9=strongly agree.
Higher scores indicate higher levels of perceived response costs.
This is a composite variable reflecting the average of the items that compose it.
|
At 20 minutes (i.e. straight after exposure to the health messages)
|
Spolupracovníci a vyšetřovatelé
Sponzor
Publikace a užitečné odkazy
Obecné publikace
- McGlone MS, Bell RA, Zaitchik ST, McGlynn J 3rd. Don't let the flu catch you: agency assignment in printed educational materials about the H1N1 influenza virus. J Health Commun. 2013;18(6):740-56. doi: 10.1080/10810730.2012.727950. Epub 2012 Dec 5.
- Moxey A, O'Connell D, McGettigan P, Henry D. Describing treatment effects to patients. J Gen Intern Med. 2003 Nov;18(11):948-59. doi: 10.1046/j.1525-1497.2003.20928.x.
- Smith LE, D'Antoni D, Jain V, Pearce JM, Weinman J, Rubin GJ. A systematic review of factors affecting intended and actual adherence with antiviral medication as treatment or prophylaxis in seasonal and pandemic flu. Influenza Other Respir Viruses. 2016 Nov;10(6):462-478. doi: 10.1111/irv.12406. Epub 2016 Aug 8.
Termíny studijních záznamů
Hlavní termíny studia
Začátek studia (Aktuální)
Primární dokončení (Aktuální)
Dokončení studie (Aktuální)
Termíny zápisu do studia
První předloženo
První předloženo, které splnilo kritéria kontroly kvality
První zveřejněno (Aktuální)
Aktualizace studijních záznamů
Poslední zveřejněná aktualizace (Aktuální)
Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality
Naposledy ověřeno
Více informací
Termíny související s touto studií
Klíčová slova
Další identifikační čísla studie
- LRS-15/16-2297
Plán pro data jednotlivých účastníků (IPD)
Plánujete sdílet data jednotlivých účastníků (IPD)?
Informace o lécích a zařízeních, studijní dokumenty
Studuje lékový produkt regulovaný americkým FDA
Studuje produkt zařízení regulovaný americkým úřadem FDA
Tyto informace byly beze změn načteny přímo z webu clinicaltrials.gov. Máte-li jakékoli požadavky na změnu, odstranění nebo aktualizaci podrobností studie, kontaktujte prosím register@clinicaltrials.gov. Jakmile bude změna implementována na clinicaltrials.gov, bude automaticky aktualizována i na našem webu .
Klinické studie na Zdravý
-
University of ZurichDokončenoOutcome Assessment, Health CareŠvýcarsko
-
University of BernUniversity Hospital Inselspital, BerneDokončenoNeuroscience of Dreaming, HealthŠvýcarsko
-
University of Colorado, DenverEunice Kennedy Shriver National Institute of Child Health and Human Development... a další spolupracovníciAktivní, ne náborPreventivní zdravotní služby (PREV HEALTH SERV)Spojené státy
-
Queens College, The City University of New YorkNáborZveřejnění článků předložených American Journal of Public HealthSpojené státy
-
Kliniek ViaSanaSt. Anna Ziekenhuis, Geldrop, NetherlandsDokončenoBolest | Užívání opioidů | Totální náhrada kolena | Aplikace E-healthHolandsko
-
Istanbul University - Cerrahpasa (IUC)NáborKardiochirurgie, Srdeční chirurgie, Výuka propouštění, Ošetřovatelství, Telenutriční péče, m-Health, Kvalita života, ZotaveníKrocan
-
FIDMAG Germanes HospitalàriesUniversity of BarcelonaZatím nenabírámePorucha duševního zdraví | Duševní zdraví wellness 1 | Role sestry | Care Acceptor, Health | Vztah, sestra pacienta
-
University of AarhusRegion MidtJylland Denmark; Tryg Danmark; Randers Municipality, DenmarkNeznámýKardiovaskulární onemocnění | Podpora zdraví | Duševní zdraví | Fyzická nečinnost | Self-reported Quality of HealthDánsko
-
Yorkshire Ambulance Service NHS TrustUniversity of BradfordZatím nenabírámeTestování Point of Care | Klinické rozhodování | Komunitní urgentní a pohotovostní péče | Allied Health Professional
-
4Life Research, LLCDokončenoSin Health | Hydratace pleti | Kožní vrásky | Kožní porfyriny | Červené skvrny na kůži obličeje | Červená vaskulatura kůže obličejeSpojené státy