NOPR Cohort Characteristics
| Characteristic | Value |
|---|---|
| Age, y | |
| Mean | 72.4 |
| Interquartile range (25%−75%) | 68–78 |
| <65 | 4,120 (10.1) |
| >85 | 2,123 (5.2) |
| Females/males, % | 50.2/49.8 |
| No. of scans, no. (%) of patients | |
| One | 29,832 (86.4) |
| Two or more | 4,704 (13.6) |
| ECOG performance category (status) | |
| Asymptomatic: fully active (0) | 16,188 (39.6) |
| Symptomatic, fully ambulatory (1) | 19,868 (48.6) |
| Symptomatic in bed <50% of day (2) | 3,721 (9.1) |
| Symptomatic in bed >50% of day (3) | 1,007 (2.5) |
| Bedridden (4) | 79 (0.2) |
| Summary cancer stage before PET | |
| No evidence of disease | 4,914 (12.0) |
| Localized only | 8,036 (19.7) |
| Regional, by direct extension or lymph node involvement | 5,630 (13.8) |
| Metastatic (distant), with single suspected site | 5,043 (12.3) |
| Metastatic (distant), with multiple suspected sites | 6,984 (17.1) |
| Unknown or uncertain | 10,256 (25.1) |
| Scan type and facility location, % | |
| Integrated PET/CT | 88.7 |
| Non–hospital-based location | 68.9 |
| Fixed location | 74.7 |
ECOG = Eastern Cooperative Oncology Group.
Results are reported as number (percentage) of scans unless otherwise indicated.