Cases and controls in NHS I with diagnosis (or index) dates preceding the initial food frequency questionnaire administered in 1980 were excluded from the analysis (n = 36 cases, 129 controls).
The proportions of 'known positives' (those with CD4 test dates preceding their HIV test date in this study) were similar between arms with 11.4% (26 patients) in the intervention arm and 9.1% (36 patients) in the control arm (p = 0.363, Pearson chi).
The French data compiled by Alexandrescu et al. (1996) are much less numerous (pink circles in Fig. 2a with dates preceded by "P" for Paris).
Group 1 data from London compiled by Malin and Bullard (1981) are the most numerous and arguably the best documented (yellow circles in Fig. 2a with corresponding dates preceded by "L" for London).
Using a hospital database of 434 patients with controlled HIV, 150 patients observed between March and November 2010, and who continued receiving FDCs, were randomly selected (non-exposed group); these patients continued receiving FDCs because their expected appointment dates preceded the FDCs disruption.
Antiviral use was not extensive, and the current study dates preceded the introduction of zanamivir and oseltamivir.
We also excluded patients whose resection dates preceded the date of diagnosis (n = 9,029), those with a waiting time of over 62 days, as they most likely received preoperative therapy or had other conditions necessitating delay (n = 13,733) and a further 491 patients with negative or zero post-operative survival times.
Murdoch's economics is out of date, preceding both the lessons we have learned about free markets from the financial crash and the latest thinking about what is good and bad about the market mechanism.
The profile of the Bafta awards has soared since it moved to a date preceding the Oscars, encouraging Hollywood nominees to walk the red carpet as they hustle for the attention of Academy voters.
The four reporters uncovered a widespread practice of backdating a CEO's stock options to a date preceding a rise in the company's stock; in one case, they determined that the odds of a CEO's stock-option grants always preceeding a rise in the stock price were one in 300 billion.
Of these, 55 (7.7%) had a treatment start date preceding the start of the sentinel surveillance system in 2002 and were excluded.
