In the scenario of constant progression to PID, with a constant daily risk of developing PID, it takes 228 days until half of the expected PID cases are observed and for the progression at the end it takes 253 days, using the MLE in Table 2 (see Additional file 1 Figure A1).
These were the ornaments: upon her hands a number of rings set with precious stones of various colours, about her head no small number of golden stars interspersed with stones of every kind, and about her neck numerous necklaces, some of them smaller, the others each a little larger in a constant progression.
In the constant progression scenario, the time window might be shorter than the duration of infection.
"Most importantly, I am looking for constant progression.
The sample size calculated with constant progression is closer to the POPI trial sample size calculation than with progression at the end of infection in 78.5 % of the investigated combinations (see Additional file 1: Figure S4).
Backed by a constant progression in his academic career he became the Rector, between 1992 and 2004, of the 'Carol Davila' University (the oldest, largest and most prestigious in Romania), considered an example of progress and innovation in the 150 years of history of the University.
As seen in the example in Figure 3, with a constant progression rate, the largest proportion of individuals newly entering a given health state will progress to a subsequent health state during the first year, due to a declining denominator in the initial health state during each subsequent year.
In a model that assumes a constant progression rate from chlamydia to PID, the predicted RR = 0.56.
We do this in a model framework similar to the constant progression scenario.
The RR is independent of the fraction f for the immediate progression and for the progression at the end in contrast to the RR for the constant progression (Additional file 1, section 2).
In particular, the RRV has been in constant northward progression in North America over the last four decades (Curtis 1999).
