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Table 1 Primary and secondary objectives to be investigated

From: InternationaL cross-sectIonAl and longItudinal assessment on aSthma cONtrol in European adult patients - the LIAISON study protocol

 

Cross-sectional phase

Longitudinal phase

Primary objectives

• Prevalence of patients with controlled or uncontrolled/partly controlled asthma

• Proportions of patients with controlled, partly controlled and uncontrolled asthma after 12 months from the cross-sectional phase visit

• Health-related quality of life

• Proportion of patients with uncontrolled/partly controlled asthma switching to controlled asthma after 12 months from the cross-sectional phase visit

• Factors associated with asthma control

• Changes in quality of life after 12 months

• Factors associated with the gain of asthma control

Secondary objectives

• Proportion of asthmatic smokers and their level of asthma control

• Association between (current) level of asthma control and (future) risk of exacerbations

• Antiasthmatic therapies

• Relation between change in asthma control and change in rate of exacerbations during the longitudinal phase (including stratified analyses according to GINA treatment level)

• Medication adherence

• Antiasthmatic therapies

• Healthcare costs over 3 months before the cross-sectional phase visit

• Proportion of patients with uncontrolled/partly controlled asthma that reach control after 3 and 6 months from cross-sectional phase visit

• Rate of severe exacerbations in the last 12 months before the cross-sectional phase visit

• Medication adherence

• Reasons for poor control according to the Investigators’ and the patients’ opinion

• Healthcare costs

• Lung function parameters, if available

• Rate of severe exacerbations and the time to first severe exacerbation

• Reasons for poor control according to the Investigators’ and the patients’ opinion

  

• Lung function parameters, if available