Table 1.
Patient characteristics
| Variable | Comparison (n=427) | Epidural block (n=427) | p-value |
|---|---|---|---|
| Sex | 0.62 | ||
| Male | 153 (35.8) | 145 (34.0) | |
| Female | 274 (64.2) | 282 (66.0) | |
| Ages (yr) | 0.51 | ||
| ≤49 | 68 (15.9) | 79 (18.5) | |
| 50–79 | 342 (80.1) | 328 (76.8) | |
| ≥80 | 17 (4.0) | 20 (4.7) | |
| Residence | 0.42 | ||
| Seoul | 60 (14.1) | 72 (16.9) | |
| Other metropolitans | 133 (31.1) | 120 (28.1) | |
| Rural and small cities | 234 (54.8) | 235 (55.0) | |
| Annual household income (million KRW) | 0.87 | ||
| ≤30.0 (low) | 86 (20.1) | 90 (21.1) | |
| 30.1–69.9 (middle) | 158 (37.0) | 151 (35.4) | |
| ≥70.0 (high) | 183 (42.9) | 186 (43.6) | |
| Disability | 0.91 | ||
| No | 378 (88.5) | 380 (89.0) | |
| Yes | 49 (11.5) | 47 (11.0) | |
| Number of outpatient visit | 0.66 | ||
| 1 time | 104 (24.4) | 98 (23.0) | |
| 2–3 times | 150 (35.1) | 143 (33.5) | |
| ≥4 times | 173 (40.5) | 186 (43.6) | |
| Hospitalization | 0.52 | ||
| No | 418 (97.9) | 414 (97.0) | |
| Yes | 9 (2.1) | 13 (3.0) | |
| RD | 0.00* | ||
| No | 171 (40.0) | 114 (26.7) | |
| Yes | 256 (60.0) | 313 (73.3) | |
| DM | 0.00* | ||
| No | 270 (63.2) | 221 (51.8) | |
| Yes | 157 (36.8) | 206 (48.2) | |
| Cancer | 0.52 | ||
| No | 381 (89.2) | 374 (87.6) | |
| Yes | 46 (10.8) | 53 (12.4) | |
| AD | 0.00* | ||
| No | 344 (80.6) | 297 (69.6) | |
| Yes | 83 (19.4) | 130 (30.4) | |
| SIS | 0.04* | ||
| No | 21 (4.9) | 9 (2.1) | |
| Yes | 406 (95.1) | 418 (97.9) |
Data area expressed as the mean or number (%).
KRW, Korean won; RD, respiratory disease; DM, diabetes mellitus; AD, autoimmune disease; SIS, severe immunosuppressive status.
*
p<0.05.