Table 1.

Mite density of colonies settled with wooden floor and screen bottom board from seven studies.

No.	Study	Wooden Floor			Screen Bottom Board
		$\overline{\mathit{x}}$	SD	N	$\overline{\mathit{x}}$	SD	N
1	Coffey (2007) [17]	0.1	0.0604	15	0.0809	0.0080	15
2	Delaplane et al. (2005) [18]	0.1	0.0799	14	0.0961	0.0981	16
3	Ellis et al. (2001) [13]	0.0996	0.0661	6	0.0838	0.0857	6
4a	Harbo and Harris (2004) [15]	0.1	0.0514	9	0.0989	0.0312	10
4b	Harbo and Harris (2004) [15]	0.1	0.0541	7	0.0788	0.0503	8
5	Pettis and Shimanuki (1999) [10]	0.1	0.0524	10	0.0854	0.0524	10
6	Rinderer et al. (2003) [19]	0.1	0.1205	8	0.0875	0.1205	8
7a	Sammataro et al. (2004) [16]	0.144	0.0402	5	0.0826	0.0441	6
7b	Sammataro et al. (2004) [16]	0.2676	0.1632	5	0.0552	0.1632	5

$\overline{x}$ represents the mean of mite density, SD represents the standard deviation, N represents the number of colonies.