At each stage of modeling, numerical problems (zero cell count or covariates discriminating the outcome perfectly) were assessed by comparing the estimated standard error to the point estimate.
74 Furthermore, when considering the relative benefits of risk-reduction approaches, it should be noted that real-world effectiveness of condoms (as distinct from efficacy when used perfectly) was recently assessed by Smith et al as providing 70% risk reduction.
I am perfectly capable of assessing for myself the risks of swimming across a small pond in Massachusetts, or the risks of swimming in the Amstel when lots of boat traffic is around.
As opposed to these complex diagnostic tools, the examination of pulmonary vessels within consolidated lung areas by Doppler is simple, non-invasive, non-ionizing and perfectly suitable to assess shunt at the bedside [14, 15].
Because all of the schools included in this sample are classified as offering instructional programs which are "four years or more" by the U.S. Department of Education, it is perfectly legitimate for assessing these schools using a four-year graduation rate.
US Ryder Cup skipper Tom Watson won the 1982 US Open and followed it with Open success at Royal Troon - he is perfectly qualified to assess the scale of McIlroy's achievements.
The Zigmond chamber was a great improvement on under agarose assays, due to its improved optical properties and near steady state linear gradient stable for 30 90 minutes – perfectly adequate for assessing the rapidly migrating PMN leukocytes.
An important limitation of all opinion research, and this study is not an exception, is that respondents (physicians in this case) may not perfectly recall and assess their experiences.
As the ball flew directly over the flag and landed twenty feet past the flag, BBC commentator Peter Alliss immediately assessed the situation perfectly: "That could spin.
"This is a 6-month to a year pipeline at most because a lot of those doctors when assessed could be perfectly fine".
