Table 4

Comparison of programming times for primary and secondary infusions (created by the authors)

	N	Mean programming time (seconds)	SD	P value
	N	Mean programming time (seconds)	SD	Significant*
Peristaltic	69	44.2	17.2
Primary	32	40.6	19.2
Secondary	37	47.4	14.8
Pneumatic	67	32.3	15.4	<0.0001*
Primary	35	30.4	13.6	0.016*
Secondary	32	34.3	17.2	0.001*

Bolded the total means of both peristaltic and pneumatic with the non-bolded sub-headings of the individual ones.