Table 1.
Summary Statistics of the Utilizations of LDCT Imaging and SDMC Based on Data Aggregated at the Provider Level, 2015 to 2017
| Year | Variable | Mean ± SD | Median | Min-Max | Sample N |
|---|---|---|---|---|---|
| 2015 | SDMC per provider | 19.6 ± 8.5 | 16 | 11-40 | 392 |
| 2016 | SDMC per provider | 27.4 ± 22.6 | 19 | 11-143 | 7,638 |
| 2017 | SDMC per provider | 28.1 ± 23.8 | 20 | 11-194 | 14,962 |
| 2015 | LDCT scans per provider | 20.2 ± 11.5 | 16 | 11-101 | 4,530 |
| 2016 | LDCT scans per provider | 26.2 ± 23.0 | 18 | 11-302 | 50,915 |
| 2017 | LDCT scans per provider | 29.0 ± 26.9 | 20 | 11-447 | 107,309 |
| 2015 | Unique providers per state | 2.5 ± 3.9 | 1 | 1-12 | 8 |
| SDMC per state | 49 ± 70.6 | 24.5 | 13-222 | 8 | |
| SDMC per 1,000 FFS beneficiaries per state | 0.05 ± 0.06 | 0.04 | 0.01-0.19 | 8 | |
| 2016 | Unique providers per state | 7.7 ± 7.3 | 5 | 1-36 | 36 |
| SDMC per state | 212.2 ± 211.4 | 156.5 | 11-990 | 36 | |
| SDMC per 1,000 FFS beneficiaries per state | 0.31 ± 0.28 | 0.20 | 0.07-1.41 | 36 | |
| 2017 | Unique providers per state | 12.2 ± 11.0 | 8 | 1-45 | 43 |
| SDMC per state | 348 ± 334.5 | 244 | 13-1452 | 43 | |
| SDMC per 1,000 FFS beneficiaries | 0.55 ± 0.46 | 0.46 | 0.04-2.64 | 43 | |
| 2015 | Unique providers per state | 6.3 ± 6.9 | 4 | 1-30 | 35 |
| LDCT scans per state | 129.4 ± 161.3 | 68 | 11-684 | 35 | |
| LDCT scans per 1,000 FFS beneficiaries per state | 0.18 ± 0.17 | 0.14 | 0.01-0.68 | 35 | |
| 2016 | Unique providers per state | 38 ± 36.4 | 22 | 1-157 | 49 |
| LDCT scans per state | 1,039 ± 1,085 | 738 | 12-5,120 | 49 | |
| LDCT scans per 1,000 FFS beneficiaries per state | 1.64 ± 1.33 | 1.36 | 0.04-7.09 | 49 | |
| 2017 | Unique providers per state | 70.3 ± 62.4 | 55 | 2-238 | 49 |
| LDCT scans per state | 2,190 ± 2,135.8 | 1257 | 66-9,486 | 49 | |
| LDCT scans per 1,000 FFS beneficiaries per state | 3.44 ± 2.17 | 3.32 | 0.49-8.74 | 49 | |
| 2015 | SDMC per unique provider | 19.6 ± 8.5 | 16 | 11-40 | 20 |
| 2016 | SDMC per unique provider | 27.7 ± 22.7 | 20 | 11-143 | 276 |
| 2017 | SDMC per unique provider | 28.6 ± 26.1 | 20 | 11-209 | 523 |
| 2015 | LDCT scans per unique provider | 20.4 ± 12 | 16 | 11-101 | 222 |
| 2016 | LDCT scans per unique provider | 27.4 ± 24.6 | 19 | 11-302 | 1,860 |
| 2017 | LDCT scans per unique provider | 31.2 ± 29.2 | 21 | 11-447 | 3,444 |
Estimates were based on data from the Medicare Provider Utilization and Payment Data: Physician and Other Supplier PUF file and the Medicare FFS enrollment PUF data for calendar years 2015 to 2017. The provider PUF includes summaries of service and procedures provided by physicians and other health-care professionals to Medicare FFS beneficiaries; thus, the data are at the individual provider level instead of the individual patient level. Only providers with > 11 services were available from the provider PUF data. Data were for Medicare FFS enrollees only. The summary statistics at the national, state, and provider levels were based on the different unit of analysis used to aggregate the data. FFS = fee-for-service; LDCT = low-dose CT; PUF = public use file; SDMC = shared decision-making and counseling.