Study type

Study topic

Disease /health condition
Human medicinal product

Study type

Non-interventional study

Scope of the study

Assessment of risk minimisation measure implementation or effectiveness

Data collection methods

Secondary use of data
Non-interventional study

Non-interventional study design

Cohort
Study drug and medical condition

Anatomical Therapeutic Chemical (ATC) code

(A06AD15) macrogol
macrogol
(A06AX05) prucalopride
prucalopride

Medical condition to be studied

Acute myocardial infarction
Ischaemic stroke
Haemorrhagic stroke
Cardiac death
Population studied

Short description of the study population

The prucalopride cohort consisted of adult patients who had a dispensing (for claims data sources) or prescription (as recorded in electronic medical record data sources) for prucalopride within the study period with at least 12 months of data coverage in the data source before this first dispensing or prescription, no evidence in the data source of prior use of prucalopride, and no evidence of short use of PEG (i.e., < 5 days) within 12 months before this first prucalopride prescription/dispensing. The first prescription of prucalopride was the index prescription, which determined the index date.
The PEG cohort consisted of patients who had a dispensing or prescription for PEG of at least 5 days within the study period, who had at least 12 months of data coverage in the data source before this first dispensing or prescription, and who had no evidence of prior use of PEG for chronic constipation in the data source. The first prescription for PEG was the index prescription, prescribed or dispensed on the index date. Up to five PEG initiators were selected for each prucalopride initiator, matched by age, sex, and calendar year of first prescription of prucalopride or PEG. (The SNR also matched patients by recent hospitalization and specialty of the prescribing physician to increase comparability between PEG and prucalopride users). At the time of study initiation, PEG was the most commonly prescribed reimbursable medication for chronic constipation in Europe.

Age groups

Adults (18 to < 46 years)
Adults (46 to < 65 years)
Adults (65 to < 75 years)
Adults (75 to < 85 years)
Adults (85 years and over)

Estimated number of subjects

66900
Study design details

Main study objective

To estimate the adjusted incidence rate ratio and 95% confidence interval for major adverse cardiovascular events—defined as the composite of hospitalization for acute myocardial infarction, hospitalization for stroke, and in-hospital cardiovascular death—in initiators of prucalopride versus initiators of polyethylene glycol 3350, adjusting for CV risk factors and other confounders.

Outcomes

Major adverse cardiovascular events (MACE)—defined as the composite of hospitalization for acute myocardial infarction (AMI), hospitalization for stroke, and in-hospital cardiovascular death, Individual components of MACE – Hospitalization for AMI, hospitalization for stroke, in-hospital cardiovascular death

Data analysis plan

For each cohort, the prevalence of baseline risk factors for MACE will be described. Incidence rates of each outcome of interest will be calculated for the prucalopride and PEG cohorts, and IRRs will be estimated. Within each data source, propensity scores will be developed by modeling use of prucalopride against CV risk factors that could be confounders. After stratifying cohort-specific incidence rates by propensity score decile and by data source, the coordinating center will conduct an overall analysis combining the results across all data sources to calculate overall summary incidence rate and IRR estimates. Overall incidence rates will be age- and sex-standardized to the distribution of person-years in the prucalopride cohort across all data sources by age category and sex. Overall IRRs will be standardized to the distribution of propensity score deciles in the prucalopride cohort across all data sources.
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