Table 3.

Uni-/multivariate analysis of factors affecting the final outcome following THD Doppler procedure

Factors	Univariate analysis Relative risk (95% CI)	p value	Multivariate analysis Relative risk (95% CI)	p value
Age < 40 years	2.004 (1.284–3.128)	0.002	1.945 (1.234–3.065)	0.004
Male	1.010 (0.653–1.561)	0.965
Baseline grade 4 hemorrhoidal diseasea	2.308 (1.261–4.223)	0.005	2.367 (1.261–4.442)	0.007
First device usage	1.472 (0.788–2.750)	0.223
Second device usage	1.966 (0.797–4.852)	0.135
Third device usage	0.600 (0.350–1.028)	0.060	0.949 (0.485–1.855)	0.878
High ligation of arteries	2.155 (1.375–3.377)	0.001	1.881 (1.083–3.269)	0.025
No morbidity within 30 days	1.508 (0.694–3.279)	0.296
Follow-up < 12 months	0.447 (0.160–1.249)	0.115	0.613 (0.216–1.744)	0.359

^aGoligher classification