A meta-regression (random-effects) established that the probability of receiving placebo, year of publication, and baseline severity were independent predictors of the risk ratio of responding to antidepressants versus placebo.
In the case of DRL performance in the present study, it is possible that the lower efficiency in the very first session may reflect a reduced ability to adapt to the change from the fixed ratio schedule of responding (FR8) that rats performed during the previous two sessions before DRL training began.
We examined motivation for taking cocaine in two experiments using a range of doses on a progressive ratio (PR) schedule of responding in bHR or bLR males and females.
After 2 hours, no significant difference of responding ratio was found between the two groups (85.7% vs 66.7%, P = 0.392).
Since we had 183 responders and 18 predictors, the ratio of the total number of responding participants to the number of potential predictors was greater than 10 [ 40, 41], so all variables were included in our multivariable model without substantial concern for overfitting.
25(OH D level was significantly associated with response: a 1 ng/ml decrease in 25(OH D was associated with ~5% decrease in odds of responding (odds ratio = 0.95; 95% CI, 0.92 0.98; p = 0.0006).
In conclusion, this experiment employed a quantitative analysis of responding on progressive-ratio schedules, derived from Killeen's [30] mathematical model of schedule-controlled behaviour, MPR.
In the figure, λ = n/N is the ratio of the responding EV users, in which n is the number of EVs charged in valley period and N is the total number of EVs.
For that we determined the ratio of cells responding with and without the chimeric G-protein.
In contrast, the pain group induced no significant changes in the LF/HF ratio of HRV responding to isometric exercise.
