Smoking was summarised in age at starting, duration of smoking, time since cessation and equivalent pack-years.
RRs were entered for seven measures: amount smoked, age of starting, duration of smoking, duration of quitting, tar level, butt length and fraction smoked.
The section on smoking included questions on smoking status (never, current, or ex-smokers), daily number of cigarettes/cigars smoked in different life periods, age at starting, duration of the habit and, for ex-smokers, age at smoking cessation.
For amount smoked, age of starting, duration of smoking, years quit (vs. never and vs. current) there are sufficient numbers of dose response sets to study variation in RR by sex, study type and continent.
To assess the usage pattern we analyzed the logdata of the sessions in Casus concerning VPs opened, day on which a session was started, duration of session in minutes and score for each answer.
Secondary objectives were to evaluate the effects of ribavirin, according to severity of disease and number of days from onset of illness that the drug was started, duration of ribavirin treatment, via of administration; and to evaluate whether prophylactic use following exposure to CCHF virus should be recommended.
There are no clear-cut characterizing differences in age of start, duration of attacks, diurnal variation (presence also in the night), autonomic symptoms, cutaneous triggers, treatment response, presence of aberrant vascular loops potentially irritating the trigeminal nerve (Table 1) [2 4, 8, 9].
Secondary outcomes: impact of covariates (sex, age, CD4 count at start, adherence, tuberculosis at start, duration of treatment, and internally displaced person status) on mortality.
" Timing and context" covers the following features: incidence (number of episodes/recording), time at start, duration of the episode and of the postictal phase, prodrome, state of wakefulness at the seizure start, impairment of consciousness during the seizure, provocative factors, facilitating factors, tongue biting, effect of medication, and time relationship between clinical and EEG start.
Data are too few for emphysema to make inferences for age of starting and duration of quitting.
For each period, we asked for the age at starting use, duration of use and brand name.
