Table 4. Course of development of pain.
| Good group |
Poor group (n = 103) |
||
|---|---|---|---|
| Duration of pain (y) | * | ||
| <1 | 45 (38%) | 24 (23%) | |
| ≥1 | 73 (62%) | 79 (77%) | |
| Pain development | |||
| By gradation) | 66 (56% | 67 (65%) | |
| Rapidly | 52 (44%) | 36 (35%) | |
| Cause of injury | |||
| Traffic accident | 7 ( 6%) | 9 ( 9%) | |
| Work-related injury | 1 ( 1%) | 2 ( 2%) | |
| Unclear | 110 (93%) | 92 (89%) |
Data for duration of pain, pain development, and cause of injury are shown as numbers and percentages (in parentheses) of patients who replied subjectively with “yes.” These data were analyzed by the χ2 test. The significance level is less than 5%. *: Different between good and poor groups. The durations of pain in the good outcome group were significantly shorter than those in the poor outcome group. There were no significant differences in the other items concerning the course of development of pain between the outcome groups.