A comparison of first-attempt cannulation success of peripheral venous catheter systems with and without wings and injection ports in surgical patients—a randomized trial

Table 2 All data shown as frequencies and percentages. ITT intention to treat, BMI body-mass index. Missing data is treated as such

Successful Cannulation	Introcan (IS)			Vasofix (VS)			P
Successful Cannulation	n total	n successful	%	n total	n successful	%	P
Total (ITT)	1133	886	78.2%	1171	1025	87.5%	< .001
Age (years)
1 to 6	16	12	75.0%	18	10	55.6%	.24
7 to 12	13	12	92.3%	12	9	75.0%	.32
13 to 17	28	23	82.1%	15	13	86.7%	.70
18 to 44	311	257	82.6%	348	305	87.6%	.07
45 to 64	432	330	76.4%	408	365	89.5%	< .001
≥ 65	333	252	75.7%	370	323	87.3%	< .001
Gender
Female	532	418	78.6%	565	474	83.9%	.02
Male	593	463	78.1%	589	538	91.3%	< .001
BMI (adults only)
< 18.5 kg/m²	25	21	84.0%	26	23	88.5%	.70
18.5 to 24.9 kg/m²	471	365	77.5%	480	427	89.0%	< .001
25 to 29.9 kg/m²	337	266	78.9%	382	334	87.4%	.002
≥ 30 kg/m²	229	175	76.4%	225	197	87.6%	.002
Venous Condition
Good	778	657	84.4%	805	745	92.5%	< .001
Moderate	286	198	69.2%	282	234	83.0%	< .001
Poor	57	23	40.4%	69	35	50.7%	.25
Site of Cannulation
Back of hand	905	714	78.9%	909	816	89.8%	< .001
Forearm	153	121	79.1%	186	155	83.3%	.38
Antecubital fossa	55	40	72.7%	55	41	74.5%	.83
Operator Function
Physicians	416	312	75.0%	418	364	87.1%	< .001
Nurses	610	483	79.2%	640	560	87.5%	< .001
Others	95	80	84.2%	96	88	91.7%	.11
Operator Experience
> 3 years	813	655	80.6%	867	762	87.9%	< .001
< 3 years	248	175	70.6%	238	207	87.0%	< .001
Catheter Size
≤ 16 G	32	28	87.5%	54	52	96.3%	.19
18 G	587	472	80.4%	598	546	91.3%	< .001
20 G	478	356	74.5%	473	399	84.4%	< .001
≥ 22 G	29	24	82.8%	44	26	59.1%	.03

ISSN: 1471-2253