Table 2.

Analysis of factors influencing the SNH area in PD patients.

Clinical features	SNH area (cm2)		t value	P value
Gender
Female	0.276 ± 0.393		−0.833	0.406
Male	0.323 ± 0.291
Ethnicity
Han nationality	0.327 ± 0.362		1.106	0.270
Minority nationality	0.261 ± 0.280
Age of onset (years)
>50	0.326 ± 0.352		2.003	0.047
≤50	0.171 ± 0.194
Urination disorders
No	0.321 ± 0.391		0.720	0.473
Yes	0.281 ± 0.256
Constipation
No	0.308 ± 0.292		0.099	0.921
Yes	0.302 ± 0.361
Pain
No	0.310 ± 0.342		0.593	0.554
Yes	0.266 ± 0.328
Sleep disorders
No	0.291 ± 0.280		−0.272	0.786
Yes	0.307 ± 0.367
Hyposmia
No	0.307 ± 0.354		0.401	0.689
Yes	0.279 ± 0.274
Hyperhidrosis
No	0.303 ± 0.345		0.100	0.921
Yes	0.295 ± 0.305
VH
No	0.278 ± 0.659		−2.632	0.009
Yes	0.508 ± 0.670
HAMD
No	0.355 ± 0.391		1.613	0.109
Yes	0.255 ± 0.281
HAMA
No	0.344 ± 0.369		1.818	0.071
Yes	0.212 ± 0.265
Cognitive impairment
No	0.288 ± 0.285		−1.089	0.278
Yes	0.359 ± 0.453