Assuming a guest list of 500, advertisers will foot a bill of more than $500,000, according to our sources.
For example, each of the 42 000 general practitioners in the UK will see about seven new cancers, three to four strokes, and five to six myocardial infarctions each year, assuming a notional list size of 1800-2000.
Assuming an average list size of 4500 people, 75% of whom are 18 years or older [ 17], and 5% of whom meet the exclusion criteria, it would be sufficient to recruit four general practices, but up to eight will be recruited to reflect diversity and increase generalisability.
Assuming an average list size of 4500 people, 75% of whom are 18 years or older [ 56], and 5% of whom meet the exclusion criteria, it would be sufficient to recruit two general practices, but up to five will be recruited to increase generalisability.
As another example, we assume a rank list 1, 1&2, and 2, which is denoted as Rank Result B and shown in Table 1(b).
Unfortunately, even assuming a nearly perfect ranked list of terms, it is still difficult to decide how many relevant terms are sufficiently relevant to cover the domain essential terms.
Incidence rates and their 95% confidence intervals (CI) were calculated using the 2005 voter's list, assuming a Poisson distribution.
On the basis of our pilot data (3.2% of the age group being suitable and consenting) and assuming an average practice list of 4500 with 18% of people aged 50 69 (Office for National Statistics, 2004), 23 100 people from 29 practices were estimated to be required to identify 700 eligible participants consenting to colonoscopy and MMP9 determination.
Assuming an average practice list size of 6,000, that 15% [ 39] are aged between 20 and 40 (most common age range for colposcopy), and that 70% have not experienced colposcopy, 630 patients per practice will be eligible as controls [Figure 1].
