Objectives Declining participation in epidemiological studies has been reported recent decades and may lead to biased prevalence estimates selection bias. The aim of the study was identify possible causes effects non-response a population-based respiratory health Norway. Design Telemark is longitudinal that began with cross-sectional survey 2013. Setting In 2013, random sample 50 000 inhabitants aged 16–50 years, living county, received validated postal questionnaire. response rate 33%. this...

Objectives We aimed to estimate the prevalence of chronic bronchitis (CB), examine its association with occupational exposure irritants assessed by self-reporting or Nordic job matrix (N-JEM) stratified smoking status and population-attributable fraction (PAF) CB from exposure. Methods A two-phased, cross-sectional design was used analyse a random sample collected in 2013 2018 population aged 16–55 years Telemark County, Norway. defined as cough sputum production for ≥3 months over 2...

Objectives The aim of this study was to estimate the prevalence respiratory symptoms and physician-diagnosed asthma assess impact current occupational exposure. Design Cross-sectional analyses self-reported health association with exposure in a random sample general population Telemark County, Norway. Settings In 2013, self-administered questionnaire mailed population, aged 16–50, Telemark, overall response rate 33%, comprising 16 099 responders. Outcome measures for asthma, OR groups...

Objectives This study aimed to characterise participants lost follow-up and identify possible factors associated with non-participation in a prospective population-based of respiratory health Norway. We also analyse the impact potentially biased risk estimates high proportion non-responders. Design Prospective 5-year study. Setting Randomly selected inhabitants from general population Telemark County south-eastern Norway were invited fill postal questionnaire 2013. Responders 2013...

<h3>Background</h3> The current knowledge on respiratory work disability is based studies that used crude categories of exposure. This may lead to a loss power, and does not provide sufficient information allow targeted workplace interventions follow-up patients with symptoms. <h3>Objectives</h3> aim this study was identify occupations specific exposures associated disability. <h3>Methods</h3> In 2013, self-administered questionnaire mailed random sample the general population, aged 16–50,...

This cross-sectional study of the general population Telemark County, Norway, aimed to identify risk factors associated with poor asthma control as defined by Asthma Control Test (ACT), and determine proportions patients poorly controlled who had undergone spirometry, used medication, or been examined a pulmonary physician. In 2014-2015, recruited 326 subjects aged 16-50 years self-reported physician-diagnosed presence respiratory symptoms during previous 12 months. The clinical outcome...

In Norway, data on the association between second-hand tobacco smoke (SHS) exposure at home and respiratory symptoms in adults are limited.We assessed self-reported to SHS prevalence of among never-smokers aged 16 50 years from general population who were included a cross-sectional population-based study Telemark County, Norway. Logistic regression analysis was used estimate odds ratios 8850 provided an affirmative response questions regarding SHS; 504 (5.7%) these reported that they lived...

Chronic rhinosinusitis (CRS) is associated with generalised airway inflammation. Few studies have addressed the relationship between CRS and chronic bronchitis (CB).This prospective study over a five-year period aims to investigate risk of developing CB in subjects reporting at beginning study. A random sample 7393 adult from Telemark County, Norway, answered comprehensive respiratory questionnaire 2013 then 5 years later 2018. Subjects were excluded analyses. New cases 2018 analysed...

This study aimed to estimate the incidence of asthma and assess association between job exposure matrix (N-JEM) assigned occupational exposure, self-reported vapour, gas, dust fumes (VGDF), mould, damages from moisture cold, new-onset asthma. We also corresponding population attributable fraction (PAF) for ever VGDF.

<b>Aim:</b> Studies have shown that asthma and respiratory symptoms are associated with employment in certain occupations, suggesting these workplaces might need intervention to prevent adverse effects. The aim of this study was assess the association related occupational groups. <b>Methods:</b> In 2013, a random sample 50 000 inhabitants aged 16-50 Telemark county, Norway received questionnaire 16 099 subjects participated. For 64% responders information available for classification by 1988...

<b>INTRODUCTION</b> In Norway a smoking ban was introduced in 2004, leading to reduction respiratory symptoms and increased lung function for the workforce (Skogstad, et al. Occup Environ Med 2006;63:482-7). Data regarding association between exposure household are scarce. <b>METHOD</b> We assessed self-reported tobacco prevalence of among 16099 subjects from general population, aged 16 50 years, included Telemark study (Abrahamsen, BMJ Open 2016 Jan 6;6(1). Logistic regression estimating...

It is recognized that housing conditions like dampness and mould can contribute to respiratory symptoms disease due microbial agents. Studies have shown increase in decline lung function associated with damp at home (Tischer C, et al. BMC Pulm Med (2015) 15:48. <b>Aim:</b> To study the association between exposure private homes <b>Methods:</b> The included a random sample of 50 000 inhabitants aged 16-50 Telemark county, Norway. A total 16 099 participated by returning postal questionnaire...

<b>Objectives:</b> Declining participation in epidemiological studies has been reported recent decades and may lead to biased prevalence estimates. The aim of the study was identify causes non-response impact on estimates a population-based respiratory health Norway. <b>Methods:</b> In 2013, random sample 50 000 inhabitants aged 16-50, living Telemark county received validated postal questionnaire. response rate 33 %. A 700 non-responders contacted first by telephone then mail....

<b>Introduction:</b> It has been shown that respiratory work disability is associated with exposure to vapours, gases, dust, and fumes (VGDF) at the workplace. The use of crude categories may, however, lead loss power. More specific information needed for workplace interventions prevention disability. aim this study was assess association between occupations job change. <b>Methods:</b> A self-administered questionnaire mailed a random sample general population, aged 16 50, living in Telemark...

<b>Introduction:</b> Studies have suggested that markers may be useful to achieve better control and monitoring of patients with poorly controlled asthma. <b>Aims Objectives:</b> The aim the study was examine relationship between lung function inflammatory markers, its correlation asthma assessed by test (ACT) <b>Methods:</b> In 2014/15, a cross-sectional clinical conducted including 663 subjects physician-diagnosed recruited from general population (n=16099). Of these, 299 reported...

<b>Objectives:</b> Studies have shown that declining participation in epidemiological studies may lead to biased estimates of occurrence and selection bias. Nevertheless, on non-participation loss follow-up prospective are rare. <b>Aim:</b> The aim the study was characterize those lost possible factors associated with a population based respiratory health Norway. <b>Methods:</b> A five-year sample (n=16 099), aged 21-55 years, from Telemark conducted 2018. Risk were assessed by forward...

<b>Introduction:</b> Chronic bronchitis (CB), defined as chronic cough with phlegm, is a common respiratory condition negative impact on patient quality of life. Although occupational exposure recognized risk factor, there are few prospective studies assessing work for new onset CB. <b>Aim:</b> We hypothesised that increases the CB and assessed whether baseline self-reported to vapor, gas, dust fumes (VGDF) was associated <b>Methods:</b> The study based random sample general population in...