Finally the EHR has helped quality control and health care planning through the possibility of evaluation of care based on date extracted from patient records [ 26].
Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated based on the date extracted from the studies to evaluate the strength of association.
Data on the total number of months of each HAART regimen dispensed, as well as any relevant start and/or stop dates, were extracted from pharmacy patient files.
Hospital in-patient admission and discharge dates were extracted from the Finnish Hospital Discharge Register (FHDR) between January 1 , 1981and December 31, 2008 for all participants.
Medications (anti-platelets, beta-blockers and statins) current at the clinic date were extracted from the primary care electronic record.
The most current baseline value (before the index date) was extracted from the HMO's electronic medical record (including laboratory data, and inpatient or outpatient visits, except where noted).
Use of antidiabetes drugs by study subjects prior to the index date was extracted from this database, including ATC groups A10A (insulins and analogs), A10B (oral blood glucose lowering drugs, including sulfonylureas [e.g., gliclazide] and biguanides [e.g., metformin]), and A10x (other drugs used in diabetes).
Admission serum biochemistry and blood gas results (defined as the first available results within 24 h of the recorded admission date) were extracted from the database alongside the serum biochemistry and blood gas results at 6 am (+/- 2 hours) for the 3 days following admission.
14C dates from charcoal extracted from the fan sediments show maximum deposition ages between c. 4400 cal.
Complete dosing histories, PFS, death, and censoring dates were also extracted from the respective databases, as well as covariates to be tested as prognostic factors.
