Publications by authors named "Christophe Berkhout"

Background: In 2020, uterine cervical cancer (UCC) was the 12th most common cancer among women in France and the 4th worldwide. French health authorities wanted to increase Human Papilloma Virus (HPV) vaccination and screening rates. There were still many barriers to these measures among young women, their families, and health professionals and teachers.

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In 2015, we conducted a randomized controlled trial (RCT) in primary care to evaluate if posters and pamphlets dispensed in general practice waiting rooms enhanced vaccination uptake for seasonal influenza. Unexpectedly, vaccination uptake rose in both arms of the RCT whereas public health data indicated a decrease. We wondered if the design of the trial had led to a Hawthorne effect (HE).

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Cervical cancer screening (CCS) by Pap tests is mainly performed by gynecologists in France, but also by general practitioners (GPs) and midwives. The screening uptake is insufficient to reduce the incidence of cervical neoplasms. Our aim was to investigate the association between screening rates in patients listed with GPs and the distance between GPs' offices and gynecology facilities.

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Introduction: Some users of anabolic androgenic steroids (AAS) secretly consume aromatase inhibitors (AI) and selective oestrogen receptor modulators (SERM). Cyber-forums can be potential sources of information. Our aim was to determine the cycles used, and to identify the adverse drug reactions (ADRs) experienced, reported in a bodybuilding forum.

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In 2014-2015, we conducted a randomized controlled trial (RCT) assessing the effect of an advertising campaign for influenza vaccination using posters and pamphlets in general practitioner (GP) waiting rooms. No effect of the intervention could be demonstrated, but the immunization uptake increased in both arms of the study. In 2019, we deepened the investigations explaining the increased uptake conducting a registry-based 4/2/1 cluster RCT designed by Zelen with two extra years of follow-up of the study cohort.

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Objectives: Describe the evolution of the expenses and the number of boxes of nicotine replacement therapy reimbursed by the French health insurance between 2016 (flat rate of €.150/year with advance payment) and 2019 (65% reimbursement without in advance payment and without a spending limit).

Setting And Participants: Descriptive and analytical epidemiological study between January 1, 2016 and December 31, 2019 based on a retrospective collection of data from OpenMEDIC (the merged French health insurances drug claim database) on the number of reimbursed NRT boxes dispensed by community pharmacies and their annual cost.

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Introduction: Peripheral arterial disease of the lower extremities (PAD) is a serious condition, frequently under-evaluated. Long asymptomatic, it is easily detected by measuring the ankle-brachial index (ABI), a reference tool that is reliable, reproducible, simple and inexpensive. The objective of this thesis was to determine the rate of achievement of ABI in French Haute Autorité de santé indications, identify the associated factors and prioritize the obstacles to achieving ABI.

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Background: Cervical cancer screening rates are known to be strongly associated with socioeconomic status. Our objective was to assess whether the rate is also associated with an aggregated deprivation marker, defined by the location of family doctors' offices.

Methods: To access this association, we 1) collected data from the claim database of the French Health Insurance Fund about the registered family doctors and their enlisted female patients eligible for cervical screening; 2) carried out a telephone survey with all registered doctors to establish if they were carrying out Pap-smears in their practices; 3) geotracked all the doctors' offices in the smallest existing blocks of socioeconomic homogenous populations (IRIS census units) that were assigned a census derived marker of deprivation, the European Deprivation Index (EDI), and a binary variable of urbanization; and 4) we used a multivariable linear mixed model with IRIS as a random effect.

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Background: Health promotion is part of GPs' commitments. Some waiting rooms have therefore been implemented with audiovisual aids (posters, pamphlets or screens) for health promotion purposes. Few studies have assessed the effect of audiovisual aids in primary care.

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Objective: Most antidepressants have been associated with a risk of hyponatremia in the literature. This effect is not always reported in monographs. The aim of our study was to clarify the difference of increased risk of hyponatremia among various antidepressants.

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Purpose: Cervical cancer screening reduces the incidence and specific mortality rate of cervical neoplasms. In most cases screening by means of Pap smears is performed in France by gynecologists. The primary objective of this study was to confirm whether the participation rate is increased when general practitioners (GPs) carry out the smears themselves.

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Background: Most of general practitioners (GPs) use advertising in their waiting rooms for patient's education purposes. Patients vaccinated against seasonal influenza have been gradually lessening. The objective of this trial was to assess the effect of an advertising campaign for influenza vaccination using posters and pamphlets in GPs' waiting rooms.

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Objective: Reliable data about general practitioners performing pap-tests are insufficient. A claim code for the achievement of pap-smears exists in France, but its use by general practitioners is not known. The main purpose of this study was to highlight independent factors associated with the achievement of pap-smears by the general practitioner (GP).

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Background: It is essential to anticipate and limit the social, economic and sanitary cost of type 2 diabetes (T2D), which is in constant progression worldwide. When blood glucose targets are not achieved with diet and lifestyle intervention, insulin is recommended whether or not the patient is already taking hypoglycaemic drugs. However, the benefit/risk balance of insulin remains controversial.

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Objective: Management with opiate replacement regimens (ORRs) of patients presenting to primary care settings with opiate addiction has become a long-term follow-up. The aim of this survey study was to describe patients who had been prescribed ORRs for at least 10 years by their general practitioner (GP).

Method: In 2011, two questionnaires were sent to a sample of 38 GPs prescribing ORRs in Northern France.

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Background: General Practitioners (GPs) sometimes base their clinical decisions on 'gut feelings.' Research into the significance of this phenomenon with focus groups and a Delphi consensus procedure in the Netherlands provided a concept of 'gut feelings:' a sense of alarm, a sense of reassurance and several determinants. The transculturality of 'gut feelings' has been examined briefly until now as the issue is complex.

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Background: Diagest 3 was a study aimed at lowering the risk of developing type 2 diabetes within 3 years after childbirth. Women with gestational diabetes were enrolled in the study. After childbirth, the subjects showed little interest in the structured education programme and did not attend workshops.

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Background: European studies on quality of diabetes care in an unselected primary care diabetes population are scarce.

Research Question: To test the feasibility of the set-up and logistics of a cross-sectional EUropean study on Care and Complications in patients with type 2 diabetes (T2DM) in Primary Care (EUCCLID) in 12 European countries.

Method: One rural and one urban practice from each country participated.

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