Data record forms from all units were collected monthly and transferred to the laboratory quality committee for further statistical analysis.
Furthermore, specific work instruction, which provided stepwise descriptions of the activities, and the specific data record forms for data collection and storage were also set.
Three separate questionnaires were used to collect data from (a) eye units, (b) surgeons, and (c) program and eye unit managers (See Additional file 1 for data record forms).
Data were independently extracted from each report by three authors, using a data recording form developed for this purpose.
A standard data recording form was used.
Data were independently extracted from each report by two investigators using a data recording form developed for this purpose.
A member of the research team involved in either the interview or FGD noted by signature on the data recording form that verbal consent was received.
Measurement of all 12 physiological variables on admission and over the first 24 hours in the ICU was mandatory in the APACHE data recording form.
From each eligible article, two investigators abstracted information independently using a standardized protocol and data recording form and reached a consensus on all the items through discussion of disagreements.
Clinical reactions were recorded on standard ILRI animal record experimental data recording forms.
