Table 4.
Outpatient or inpatient treatment period and medical costs of spontaneous pneumothorax
| FU frequency during the period | Total FU frequency (including first visit) | ||||||
| Cumulative frequency | Total FU frequency (within 60 days) Comparative ratio |
Mean | SD | Minimum | Maximum | ||
| Outpatient FU | |||||||
| First-time outpatient use | 4157 | ||||||
| Within 7 days | 582 | 19.2 | 1.14 | 0.42 | 1 | 6 | |
| Within 14 days | 1372 | 45.2 | 1.33 | 0.63 | 1 | 8 | |
| Within 30 days | 2245 | 74.0 | 1.54 | 0.84 | 1 | 13 | |
| Within 60 days | 3035 | 100.0 | 1.73 | 1.07 | 1 | 13 | |
| Average follow-up period | 11.07 | 16.55 | 0 | 60 | |||
| Average medical costs (US$)* | 94.5 | 141.5 | 0.9 | 2673.6 | |||
| Hospitalisation FU | |||||||
| First-time hospitalisation use | 3005 | ||||||
| Within 7 days | 180 | 30.0 | 1.06 | 0.24 | 1 | 3 | |
| Within 14 days | 301 | 50.1 | 1.10 | 0.31 | 1 | 3 | |
| Within 30 days | 451 | 75.0 | 1.15 | 0.40 | 1 | 5 | |
| Within 60 days | 601 | 100.0 | 1.20 | 0.48 | 1 | 7 | |
| Average number of days of hospitalisation | 14.19 | 18.25 | 0 | 601 | |||
| Average follow-up period | 3.67 | 10.67 | 0 | 60 | |||
| Average medical costs (US$)* | 2523.0 | 2692.2 | 45.9 | 48 967.3 | |||
*The cost of items determined to be eligible for reimbursement by the Health Insurance Review and Assessment Service out of the total treatment amount was indicated in the submitted insurance claims statement. It was converted from Korean won to US dollars, according to the exchange rate on 12 October 2018 (US$1.00=1130 Korean won).
FU, follow-up.