Table 2.
Mean and Medians for Costs and Utilization Measures for Individuals with Diabetes Before and After Bariatric Surgery
| Pre-Surgery | Post Year 1 | Post Year 2 | Post Year 3 | Post Year 4 | Post Year 5 | Post Year 6 | ||
|---|---|---|---|---|---|---|---|---|
| Costs | ||||||||
| Mean (SD) dollars/person | Total | $9,326 ($17,258) | $13,400 ($22,368) | $14,240 ($24,913) | $13,109 ($20,870) | $12,918 ($24,605) | $13,408 ($26068) | $13,664 ($28,703) |
| Inpatient | $2,101 ($9,819) | $5,213 ($16,595) | $5,695 ($18,191) | $4,772 ($14,024) | $4,603 ($18,143) | $4,437 ($15,355) | $5,185 ($10,248) | |
| Outpatient | $3,149 ($8,290) | $3,796 ($6,683) | $4,437 ($8,917) | $4,398 ($8,479) | $4,393 ($8,467) | $5,103 ($14,114) | $4,750 ($10,248) | |
| Other† | $2,274 ($3,787) | $2,526 ($4,918) | $2,476 ($5,330) | $2,287 ($3,778) | $2,334 ($4,686) | $2,261 ($3,029) | $2,168 ($3,639) | |
| Pharmacy | $1,781 ($3,579) | $1,825 ($3,558) | $1,607 ($3,229) | $1,637 ($3,621) | $1,584 ($3,066) | $1,607 ($3,317) | $1,561 ($2,744) | |
| Median (IQR) dollars/person | Total | $4,674 ($7,437) | $6,250 ($11,736) | $5,743 ($14,729) | $5,246 ($14,134) | $5,096 ($12,484) | $5,399 ($13,640) | $4,811 ($13,060) |
| Inpatient | $0 ($0) | $76 ($413) | $0 ($0) | $0 ($0) | $0 ($0) | $0 ($0) | $0 ($0) | |
| Outpatient | $1,232 ($2,718) | $1,477 ($4,077) | $1,265 ($4,874) | $1,228 ($4,949) | $1,258 ($5,055) | $1,501 ($5,288) | $1,074 ($5,090) | |
| Other‡ | $1,231 ($1,792) | $1,514 ($2,307) | $1,344 ($2,571) | $1,273 ($2,515) | $1,298 ($2,478) | $1,275 ($2,857) | $1,205 ($2,488) | |
| Pharmacy | $712 ($2,049) | $775 ($2,304) | $384 ($1,906) | $313 ($1,979) | $305 ($1,965) | $235 ($1,905) | $242 ($2,051) | |
| Utilization | ||||||||
| Mean (SD) days/person visits/person | Inpatient days | 0.9 (3.4) | 5.0 (11.0) | 1.4 (5.5) | 1.2 (4.8) | 1.2 (5.4) | 1.0 (3.2) | 1.8 (12.2) |
| Primary care visits | 5.2 (5.0) | 4.1 (4.8) | 3.2 (4.4) | 2.8 (3.9) | 2.9 (4.1) | 2.8 (3.9) | 2.6 (4.1) | |
| Specialist visits | 6.1 (5.7) | 4.8 (6.1) | 4.3 (6.1) | 3.7 (5.2) | 3.7 (5.6) | 3.8 (5.0) | 3.6 (5.0) | |
| Median (IQR) days/person visits/person | Inpatient days | 0.0 (0.0) | 3.0 (3.0) | 0.0 (0) | 0.0 (0.0) | 0.0 (0.0) | 0.0 (0.0) | 0.0 (0.0) |
| Primary care visits | 4.0 (7.0) | 3.0 (6.0) | 2.0 (5.0) | 1.5 (4.0) | 1.5 (4.0) | 1 (4.0) | 1.2 (3.6) | |
| Specialist visits | 5.0 (6.6) | 3.0 (5.9) | 3.0 (5.0) | 2.0 (5.0) | 2.0 (5.0) | 2.0 (5.0) | 2.0 (5.3) |
†
Includes professional office and professional other costs such as visit costs, lab, and diagnostic imaging.
Notes: Each post year refers to time after surgery. For example, “Post 1” is equivalent to the first year after surgery. SD = Standard deviation; IQR = Interquartile range