Table 3. Effect of the depth of fecal suspensions on production of FL.^a .

Incubation time (hours)	No. of FL recovered from APCb
	No water adding	Water added to 12- mm depth	Stool suspension added to 12-mm depth	P c
1/6	1,471.0±621.0 (695–2,290)	Not done	Not done	NAd
6	1,373.3±577.0 (730–2,200)	20.0±49.0 (0–120)	0 (0)	0.001
8	1,328.3±562.4 (700–2,200)	0 (0)	Not done	0.002
12	1,305.0±527.4 (790–2,140)	0 (0)	0 (0)	<0.001
18	1,166.7±478.2 (650–1,850)	0 (0)	Not done	0.002

±674.1 (800–2,500) FL.^a Fresh stool produced 1,561.7

^b Means and standard deviation (range) derived from 6 different stool samples.

^c Nonparametric Kruskal-Wallis test was analyzed.

^d Not applicable.