Therefore, we posit a dynamic fall risk model consisting of intrinsic risk factors that vary over time and exposure (activity in context).
While opposite in sign, increased pre-exposure activity could influence the magnitude of the decrease in ethanol-induced hyperactivity in DopRf02676.
The 3 daughters (13, 13, and 14 years of age) did not engage in any exposure activity.
The middle category was viewed to represent moderate exposure so that the relative association of high and low exposure activity with NSP could be evaluated.
We used the PEP stat dose exposure variable as the outcome and assessed age, sex, occupation, department, exposure type, use of personal protective equipment, visible blood, wound cleaned stat, source status, year of exposure, and exposure activity.
The medical examination was to have been performed 1 week before exposure in our original protocol, but the high altitude exposure activity was delayed for 3 weeks due to a typhoon.
In all cases, except while the subject was in the room adjacent to the operating shower (i.e., secondary shower exposure activity), breath samples were collected 5 min after completion of the activity.
Activities each day were separated by at least 1 hr (3 hr after showering and bathing) to ensure that blood and breath THM concentrations returned as close as possible to baseline levels before the start of the next exposure activity.
The normalized concentrations for the air and breath samples collected before (i.e., baseline) and after each exposure activity for all subjects were compared using the Mann-Whitney U-test statistic at a significance level of p ≤0.05.
We categorized the exposure data as < 50th, 50th 75th, and > 75th percentiles for background, total exposure, and activity exposure for those with any activity, respectively.
