- ICH GCP
- US-Register für klinische Studien
- Klinische Studie NCT03942146
Smoking Cessation Prior to Gynecological Surgery
Smoking Cessation Prior to Gynecological Surgery - a Registry-based Randomized Trial
Studienübersicht
Status
Bedingungen
Intervention / Behandlung
Detaillierte Beschreibung
Peri-operative smoking cessation should be introduced 4-6 weeks before surgery and continued 4-6 weeks after surgery to decrease postoperative complications. The purpose of the study is to increase the exposure to smoking cessation information pior to surgery using a web-based quality register. The hypothesis is that this will lead to an increase in perioperative smoking cessation.
Women scheduled for gynecological surgery who report current smoking will be enrolled in the study. They will be randomly assigned to different sources of information about smoking cessation before surgery. The web-based Swedish national quality register for gynecological surgery, GynOp, will be utilized for randomization, obtaining information about the participant and the surgery performed as well as for follow-up.
GynOp The register was established in 1997 and 90% of gynecological surgical clinics in Sweden contribute information. The conversion from paper forms to on-line registration started in 2008. When scheduled for surgery a health declaration and a questionnaire about symptoms is sent to the patients primarily via their e-mail address for direct on-line registration. This is used in 41% of the cases and the response rate has been reported to be 83%. If an e-mail address is missing, or if preferred by the patient, information is obtained by postal questionnaires (today used in 59% with a response rate of 87%). It has been previously reported that there were no differences in patient characteristics between these two means of contact except that patients without an e-mail address were slightly older and answered more frequently than patients with e-mail. The advantage of the web-based version is not only that the health declaration is sent directly to the clinic and automatically included in the medical record, but relevant information to the patient can be added in the health declaration. The on-line web-version can also be used in a randomization process, which we will utilize in this study.
Data in the register is collected prospectively from patient questionnaires and doctors' forms. The patient receives written information about the register and has the opportunity to decline participation. Pre-operatively, the patient fills in a questionnaire including a health declaration with questions on comorbidity, medication and smoking status. The surgeon registers data on preoperative findings and surgical history at the enrollment before surgery. Peroperative data and events before discharge are also registered in two different forms by the surgeon. Eight weeks postoperatively the patient receives a questionnaire with questions concerning the results of the surgery and any complaints or complications. The forms are evaluated by the surgeon and data registered if there have been any complications.
The randomisation process
When smoking is reported by the participant in the web-based health declaration, she is automatically randomized to one of four alternatives. The allocation ratio of randomization will be 1:4 between the 4 arms:
Group 1 serves as a control group and receives no specific information about smoking cessation Group 2 the participant receives directly the following written recommendation in the web-based health declaration "You have increased risks due to smoking. Smoking cessation 6 weeks before surgery and 6 weeks after surgery is recommended" Group 3 The smoking status of the patient is alerted to the surgeon when filling in the preoperative form with the text " the patient smokes, recommend smoking cessation" Group 4, is a combination of Group 2 and 3, i.e. a written recommendation is included in the web-based health declaration as in group 2 and in addition the surgeon is alerted that the patient is a smoker and instructed to recommend smoking cessation as in group 3.
In the postoperative questionnaire two months after surgery the participant is asked to participate in a research study including questions about smoking cessation and an informed consent form will be presented and completed. Hence, she will thereby be blinded to the study when she receives the smoking cessation information in the preoperative questionnaire. The intention for this procedure is to avoid introducing any bias of being included in a study and to be able to study the effect of a recommendation in the register in a real world setting. This was accepted by the Ethics Committee and to be exposed to smoking cessation information was not considered an ethical problem as patients are routinely given written information on smoking cessation by the clinics even outside the study. The patient has the opportunity to decline participation two months after surgery when the additional questionnaire on smoking cessation is presented.
Five questions on smoking cessation will be added to the ordinary postoperative questionnaire. The questions includes whether or not the woman has received smoking cessation information, from whom she has been given the information and the duration of smoking cessation in connection to surgery. These questions has gone through several phases of validation prior to study start. The randomization process in the register has also been tested thoroughly since this is the first time a randomized study is carried out in this register.
Studientyp
Einschreibung (Tatsächlich)
Phase
- Unzutreffend
Kontakte und Standorte
Studienorte
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-
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Gothenburg, Schweden, 41345
- Department of Obstetrics and gynecology
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Teilnahmekriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Beschreibung
Inclusion Criteria:
- Planned gynecological surgery and invited to participate in GynOp
- Current smokers
- Ability to fill in a web-version of a questionnaire in Swedish
Exclusion Criteria:
- Non-smokers
- Surgery was not performed
- No response to follow-up questionnaire
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Verhütung
- Zuteilung: Zufällig
- Interventionsmodell: Einzelgruppenzuweisung
- Maskierung: Doppelt
Waffen und Interventionen
Teilnehmergruppe / Arm |
Intervention / Behandlung |
---|---|
Kein Eingriff: Control group
No information on smoking cessation
|
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Aktiver Komparator: Written information, GynOp
When reporting being a current smoker in the health declaration on-line the participant receives the following written recommendation in the web-based health declaration "You have increased risks due to smoking.
Smoking cessation 6 weeks before surgery and 6 weeks after surgery is recommended"
|
Smoking cessation is recommended 6 weeks before and after surgery
|
Aktiver Komparator: Doctor informed
The smoking status of the participant is alerted to the surgeon when filling in the preoperative form with the text " the patient smokes, recommend smoking cessation"
|
Smoking cessation is recommended 6 weeks before and after surgery
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Aktiver Komparator: Written information, GynOp + doctor informed
A combination of Group 2 and 3, i.e. a written recommendation is included in the web-based health declaration as in group 2 and in addition the surgeon is alerted that the participant is a smoker and instructed to recommend smoking cessation as in group 3.
|
Smoking cessation is recommended 6 weeks before and after surgery
|
Was misst die Studie?
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
---|---|---|
Smoking cessation
Zeitfenster: At two months after surgery
|
Change in smoking habits measured by a questionnaire two months after surgery.
The participants were asked to report their smoking habits at 6 weeks, 3-6 weeks and 1-3 weeks before surgery, the week of surgery and 1-3 weeks and 3-6 weeks after surgery.
The answering alternatives were "did not smoke", "smoked less than ususal" or "smoked as usual".
The rate of nonsmoking will be measured at the different time span before and after surgery.
|
At two months after surgery
|
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
---|---|---|
Postoperative complications
Zeitfenster: Registered complications within 8 weeks after surgery
|
The rate of minor and major complications, including infections after surgery
|
Registered complications within 8 weeks after surgery
|
Mitarbeiter und Ermittler
Mitarbeiter
Ermittler
- Hauptermittler: Katja S Bohlin, MD, Department of Obstetrics and Gynecology Sahlgrenska University Hospital
Publikationen und hilfreiche Links
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Tatsächlich)
Primärer Abschluss (Tatsächlich)
Studienabschluss (Tatsächlich)
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Tatsächlich)
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Andere Studien-ID-Nummern
- Q4-15-035 E4
Plan für individuelle Teilnehmerdaten (IPD)
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Beschreibung des IPD-Plans
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