Demographic information collected included date of birth, marital status [ 25], education and income (both individual and household) [ 26, 27].
Details collected included date of admission, indications for admission, the date and time of procedures requested (diagnostic/therapeutic), referrals made, date of planned and actual discharge, and LOS.
Data collected included date of birth; birth weight; estimated gestational age (EGA); grading of ROP; date of laser ablation; and outcome of laser surgery.
Information collected included date of birth, age, sex, district of residence, birthweight, and gestational age at birth (defined by maternal dates).
Information collected includes date of diagnosis, cancer site, morphology and spread of disease at diagnosis obtained from statutory notification forms and pathology reports.
Data collected included: date of birth, last date of clinic visit, visual acuity, grade of retinopathy and maculopathy at the last entry in the clinical notes (after the screening visit), ocular co-morbidities and sight impairment certification.
Detailed information on all NADC is collected on a specific case report form (CRF); information collected includes date of diagnosis, type/location of cancer and histology/cytology report or other diagnostic method.
Information from the 'caesarean section record book' was used and data collected included: date of delivery, indication for caesarean section, true conjugate (conjugata vera), Apgar score and sex of neonate, additional comments (including bilateral tubal ligation, hysterectomy).
The demographic predictor variables collected included: date of birth, gender, marital status, race, and the number of hospital admission days in the prior two years (January 1, 2003 to December 31 , 2004.
The personal and social data collected included date of birth, postcode, living arrangements (i.e., living on own, living with spouse, living with others), dependents, ethnicity, education, employment status, home ownership and annual income.
