Table 1 Comparison of general information between patients with and without SFD
Items | Total N = 1497 | Patients without SFD n = 1242 | Patients with SFD n = 255 | χ2 /t /z | P |
|---|---|---|---|---|---|
Gender | Â | Â | Â | 3.30 | 0.07 |
 Male | 626 (45.16%) | 574 (46.20%) | 102 (40.00%) |  |  |
 Female | 821 (54.84%) | 668 (53.80%) | 153 (60.00%) |  |  |
Age(years) | |||||
 M (SD) | 44.4 (13.30) | 44.55 (13.36) | 43.67 (13.10) | 0.97 | 0.33 |
Marital status | Â | Â | Â | 3.27 | 0.07 |
 Married | 1195 (79.8%) | 1002 (80.7%) | 193 (75.7%) |  |  |
 Unmarried | 302 (20.2%) | 240 (19.3%) | 62 (24.3%) |  |  |
Educational level | Â | Â | Â | 3.95 | 0.41 |
 Junior middle school (9 years) | 293 (19.57%) | 250 (20.1%) | 43 (16.9%) |  |  |
 Senior High/Technical Secondary School (12 years) | 339 (22.65%) | 278 (22.4%) | 61 (23.9%) |  |  |
 Junior College (14 years) | 267 (17.83%) | 359 (28.9%) | 86 (33.7%) |  |  |
 Undergraduate and above (≥ 15 years) | 445 (29.73%) | 131 (10.5%) | 22 (8.6%) |  |  |
Employment status | Â | Â | Â | 8.80 | 0.003 |
 Employee | 733 (49.0%) | 630 (50.8%) | 103 (40.6%) |  |  |
 Un-employee | 762 (51.0%) | 611 (49.2%) | 151 (59.4%) |  |  |
Doctor-visiting condition |  |  |  | 10.64 | < 0.001 |
 First visit | 799 (53.4%) | 688(55.4%) | 111(43.5%) |  |  |
 Repeat visit | 698 (46.6%) | 554(44.6%) | 144(56.5%) |  |  |
Visiting hospital | Â | Â | Â | 3.26 | 0.20 |
 Hospital 1 | 480 (32.06%) | 386 (31.1%) | 94 (36.8%) |  |  |
 Hospital 2 | 508 (33.93%) | 427 (34.4%) | 81 (31.8%) |  |  |
 Hospital 3 | 509 (34.01%) | 429 (34.5%) | 80 (31.4%) |  |  |
Visiting department | Â | Â | Â | 3.66 | 0.16 |
 Cardiology | 479 (32.00%) | 401 (32.3%) | 78 (30.6%) |  |  |
 Neurology | 512 (34.20%) | 434 (34.9%) | 78 (30.6%) |  |  |
 Gastroenterology | 506 (33.80) | 407 (32.8%) | 99 (38.8%) |  |  |
 Duration of symptom(Month) | 3 (1, 24) | 3 (1, 24) | 6 (1, 35) | 2.17a | 0.03 |
Median (IQR) | |||||