Table 1.

Effect of weighting adjustments on bias and variance of a mean, by strength of association of the adjustment cell variables with non-response and outcome (Little & Vartivarian, 2005).

		Association with outcome
		Low	High
Association with non-response	Low	Bias: -	Bias: -
		Var: -	Var: ↓
	High	Bias: -	Bias: ↓
		Var: ↑	Var: ↓