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. Author manuscript; available in PMC: 2017 Nov 30.
Published in final edited form as: Stat Med. 2016 Jul 18;35(27):4937–4947. doi: 10.1002/sim.7046

Table 5.

Predicted treatment probabilities (propensity scores) and stabilized survey weights for the illustrative example and data-generating mechanisms with and without practical positivity violations from the scenario with a constant treatment effect. The minimum, maximum, mean and standard deviation (SD) are given.

Propensity Scores Survey Weights (stabilized)
Analysis Mean (SD) Minimum Maximum Mean (SD) Minimum Maximum
No positivity violations,
simulation
0.45 (0.10) 0.10 0.80 1.00 (1.58) 0.14 19.94
Positivity violations,
simulation
0.41 (0.20) 0.003 0.99 1.00 (1.58) 0.14 19.94
Illustrative Example 0.30 (0.24) 0.03 0.92 1.00 (1.22) 0.04 13.23