Subjects were selected from practices from 1990, or from the date of the practice's acceptable mortality ratio, whichever was later.
The 'start date' for these individuals was calculated from the latest of three dates: the date they registered with the GP practice, the date the GP practice started to use the Vision practice system or the date of the practice's Acceptable Mortality Reporting, used as a quality indicator for the practice.
The participation in continuing educational programmes show that the OHTs seek to remain up-to-date on the practice of their profession.
To date, the state-of-the-practice for dealing with multi-axis loads in these connectors is to use a linear unity equation based on uni-axis design values.
Patients left the study on the earliest of the following dates: date of consultation or prescription, date of leaving the practice, date of death, or date the study ended (December 31 , 2010.
17 For each patient we also determined an exit date, which was the earliest of date of recorded fracture, date of death, date of deregistration with the practice, date of last upload of computerised data, or the study end date (30 June 2008).
Observation time was calculated from the entry date to an exit date, which was defined as the earliest date of recorded fracture, date of death, date of deregistration with the practice, date of last upload of computerised data, or the study end date (30 June 2008).
Follow-up time began at the end of the 12 month qualifying period following the first prescription of either an ACEI or ARB (the index date) and ended at the earliest of the following: an incident dementia diagnosis; death; transfer out of the CPRD practice network; last data collection date for the practice; or date of treatment switch between ARB and ACEI.
Participants will be followed-up in the database from their index date until the earliest of: date of death, date of leaving the practice, or the end of the follow-up period (1/08/2012).
24 For each patient, we determined the right censor date, which was the earliest of the date of diagnosis of type 2 diabetes, date of death, date of deregistration with the practice, date of last upload of computerised data, or the study end date (31 March 2008).
Participants were followed up until the earliest of date of death, date of leaving the practice, or the end of follow-up (1 August 2012).
