The PS matching approach was originally developed in part to enhance the efficiency of sampling comparison observations to be included in the study sample over random sampling from a large pool of potential observations [43].
As discussed in e.g. Busso et al. (2013), IPW reweights the comparison observations using the estimated propensity score to implicitly create a comparison sample with the same distribution of observed characteristics as the treatment group.
Of the 13 remaining participants in the prednisone group, 3 withdrew for lack of efficacy and 10 completed the 24-week "comparison" observation period (table 5).
Of the 15 remaining participants in the placebo group, 11 withdrew for lack of efficacy and 4 completed the 24-week "comparison" observation period (table 5).
Aerosol Comparisons between Observations and Models.
Comparisons included observations made under a tree canopy and in full sun with both passive and mechanically aspirated radiation shields.
These models offer advantages in examining dynamics across spatiotemporal scales and making comparisons with observations from individual-scale data.
We also compute the rates of emission of radiation and the radiative efficiency, and discuss comparisons with observations.
In addition, the SPRINTARS model is included in the Aerosol Comparisons between Observations and Models (AEROCOM) project (e.g., Kinne et al. 2006).
