Table 5.
Medical utilization of appendectomy in Taiwan by socioeconomic status and operation type, 2003-2011
| Socioeconomic status | Operation type | Summed cases 2003-2011 (%) | LOS (days) Mean (SE) | Cost (USD) Mean (SE) |
|---|---|---|---|---|
| LIP | OA | 77.30% | 5.51 ± 0.11 | 1,191 ± 19 |
| LA | 22.70% | 3.80 ± 0.08 | 1,178 ± 13 | |
| ANOVA test | p = 0.000 | p = 0.000 | ||
| NP | OA | 72.48% | 5.17 ± 0.01 | 1,170 ± 2 |
| LA | 27.52% | 3.80 ± 0.01 | 1,180 ± 1 | |
| ANOVA test | p = 0.000 | p = 0.000 | ||
OA: Open appendectomy LA: Laparoscopic appendectomy.
To reduce the impact of extreme data on the mean of LOS and hospital cost, we excluded 1% of maximum values and 1% of minimum values from the raw data.