Table 1.

Association analysis between the outcome (tube obstruction) and explanatory measures in patients using nasoenteral tubes (N=366)

Measures	Yes		No		P value
	n	%	n	%
No of medications prescribed via tube in 24 hours	6	4.6	5	4.6	0.0010*
No of medications scheduled for the same time	2	1.3	3	1.3	0.8170*
Time elapsed between preparation and administration of the drug	15	8.23	11	5.2	0.0020*
Compromising of biopharmaceutical aspects during crushing	73	57.5	172	72	0.0040†
Crushing the tablet to a fine and homogeneous powder
Yes	46	56.1	149	85.6	0.0010†
No	36	43.9	25	14.4
Washing the tube before administering the drug
Yes	27	21.3	94	39.3	0.0010*
No	100	78.7	145	60.7
Washing the tube between one medication and another
Yes	27	36	106	67.5	0.0010*
No	48	64	51	32.5
Washed the tube after the end of the medication
Yes	117	92.1	215	90.3	0.5700*
No	10	7.9	23	9.7

*Kruskal-Wallis.

†χ².