Matching actual treatment with patient administration-route-preference improves analgesic response among acute low back pain patients—a randomized prospective trial

Table 3 NPS reduction by administration route

Time from administration (min)	Administration route	N	Mean	std deviation	P	95% confidence interval
Time from administration (min)	Administration route	N	Mean	std deviation	P	Lower	Upper
10	PO	13	8.08	1.706	0.755	− 1.511	1.104
10	IM	25	8.28	1.969	0.755	− 1.511	1.104
20	PO	13	7.38	1.805	0.777	− 1.611	1.214
20	IM	24	7.58	2.125	0.777	− 1.611	1.214
30	PO	13	6.62	2.399	0.826	− 1.872	1.503
30	IM	25	6.80	2.449	0.826	− 1.872	1.503
40	PO	13	6.31	2.496	0.974	− 1.694	1.749
40	IM	25	6.28	2.475	0.974	− 1.694	1.749
50	PO	13	5.62	2.567	0.908	− 1.918	1.709
50	IM	25	5.72	2.638	0.908	− 1.918	1.709
60	PO	13	5.31	2.626	0.958	− 2.049	1.945
60	IM	25	5.36	2.998	0.958	− 2.049	1.945

ISSN: 1749-799X