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. 2016 Jun 26;18(1):32–47. doi: 10.1093/biostatistics/kxw029

Table 2.

Results from simulation scenario 2: outcome simulated from a bimodal distribution with simplified mean function of confounders.

Parameter Method Bias Coverage ESD
Inline graphic: Intercept REG Inline graphic0.02 1.00 0.38
  IPTW Inline graphic0.01 0.97 0.51
  IPTWtr 0.00 0.97 0.50
  IPTWaug Inline graphic0.02 0.97 0.45
  TMLE Inline graphic0.02 1.00 0.45
  BNP Inline graphic0.01 0.99 0.44
Inline graphic: Inline graphic REG 0.04 1.00 0.61
  IPTW 0.05 0.94 0.99
  IPTWtr 0.10 0.94 0.95
  IPTWaug 0.03 0.95 0.81
  TMLE 0.05 1.00 0.80
  BNP 0.02 0.96 0.60
Inline graphic: Inline graphic REG 0.02 1.00 0.55
  IPTW 0.01 0.98 0.81
  IPTWtr 0.04 0.98 0.75
  IPTWaug 0.01 0.95 0.60
  TMLE 0.01 0.93 0.58
  BNP 0.00 0.97 0.38
Inline graphic: Inline graphic REG Inline graphic0.04 1.00 0.79
  IPTW Inline graphic0.05 0.95 1.37
  IPTWtr Inline graphic0.07 0.95 1.29
  IPTWaug Inline graphic0.02 0.96 0.88
  TMLE Inline graphic0.04 0.93 0.87
  BNP 0.00 0.96 0.53

The true values were Inline graphic. Results are from 1000 simulated datasets of size Inline graphic.