Table 2.

Comparison of different VAS and ODI scores between the 2 groups.

	Diabetic	Nondiabetic	P Value
Pre-operation ODI	67.6 ± 10.4	55.1 ± 15.7	<.001
Pre-operation VAS	7.8 ± 0.9	7.1 ± 1.1	.002
ODI 2 wk postoperation	54.3 ± 12.9	40.8 ± 13.4	<.001
VAS 2 wk postoperation	5.4 ± 1.5	4.4 ± 1.6	.003
ODI 6 mo postoperation	45.5 ± 13.7	34.7 ± 12.8	<.001
VAS 6 mo postoperation	4.2 ± 1.8	3.6 ± 1.5	.08
ODI 1 y postoperation	40.7 ± 15.4	31.5 ± 12.5	.002
VAS 1 y postoperation	3.5 ± 2	2.9 ± 1.3	.07
Lumbar fusion	28 (58.3%)	38 (79.1%)	.02
Pre-operation force/5
3–4	1 (2.1%)		.2
3	2 (4.2%)
4	6 (12.5%)
Intact	39 (81.3%)
Force of lower limbs at 1 y postsurgery
Improved	4 (8.3%)	3 (6.2%)	.08
Unchanged	41 (85.4%)	44 (91.6%)
Deteriorated	3 (6.2%)	1 (2%)

Abbreviations: ODI, Oswestry Disability Index; VAS, visual analogue scale.