Table 3.

Comparisons among estimators under a propensity score model

	${\widehat{\beta }}_{\mathrm{LR},\mathrm{MIS}}$		${\widehat{\beta }}_{\mathrm{known}}$		${\widehat{\beta }}_{\mathrm{unknown}}$
n	Bias × 103	SSE × 103	Bias × 103	SSE × 103	Bias × 103	SSE × 103
50	357	603	66	526	93	848
100	315	392	23	386	41	572
200	295	282	22	262	42	376

SSE, the sampling standard deviation.