Another common feature seen across the twenty-six colleges is that the program is divided into three phases, namely a Preparatory Year (also called Pre-Medical Phase), followed by a Pre-Clinical Phase (also called a Medical Phase) for three years and a Clinical Phase for two years.
After the first medical examination (phase 1, 1985–1988), screenings by trained research staff were repeated three times over a 19-year period: phase 3 (1991–1993), phase 5 (1997–1999), and phase 7 (2003–2004).
For the medical program, Phase II occurs in the third year and Phase III in the fourth and fifth.
Since the first medical examination (phase 1, 1985-8), follow-up screenings with a medical examination have taken place on three occasions over a 19 year period: phase 3 (1991-3), phase 5 (1997-9), and phase 7 (2003-4).
Subsequent phases of data collection have alternated between postal questionnaire alone (phases 2 (1988–90), 4 (1995–6), 6 (2001) and 8 (2006)), and postal questionnaire accompanied by a medical screening (phases 3 (1991–3), 5 (1997–9) and 7 (2002–4)).
Data were collected during the implementation and medical education phases of the CREST intervention in 2010 2011.
The feedback provided to participants after medical screening phases of the study about their coronary risk factors may also have promoted healthier lifestyles, as discussed in relation to the Framingham study.
Professor Sir Liam Donaldson, the government's chief medical adviser, said: "Phase five indicates that WHO considers a global pandemic to be imminent, whereas at phase four a global pandemic is not inevitable.
The split feasibility problem (SFP) was first presented by Censor et al. [1]; it is an inverse problem that arises in medical image reconstruction, phase retrieval, radiation therapy treatment, signal processing etc.
