Table 1.
Demographic and Clinical Characteristics of the Incident NSCLC Population in Sweden and Denmark
| Characteristic | Sweden |
Denmark |
||||
|---|---|---|---|---|---|---|
| All |
NSQ |
SQ |
All |
NSQ |
SQ |
|
| (N = 30,067) | (N = 18,157) | (N = 7134) | (N = 31,939) | (N = 17,386) | (N = 8457) | |
| Age at NSCLC diagnosis, y Median (Q1–Q3) |
70 (63–76) | 69 (63–76) | 72 (65–78) | 69 (62–76) | 67 (61–75) | 71 (65–77) |
| Sex | ||||||
| Male, n (%) | 15,320 (51.0) | 8312 (45.8) | 4444 (62.3) | 16,593 (52.0) | 7794 (44.8) | 5510 (65.2) |
| Comorbidities, n (%),a | ||||||
| Chronic pulmonary disease | 5670 (18.9) | 2953 (16.3) | 1789 (25.1) | 4475 (14.0) | 2080 (12.0) | 1460 (17.3) |
| Congestive heart failure | 2537 (8.4) | 1389 (7.6) | 724 (10.1) | 1128 (3.5) | 543 (3.1) | 364 (4.3) |
| TNM classification at diagnosis, n (%) | ||||||
| IA | 2771 (9.2) | 2037 (11.2) | 548 (7.7) | 2003 (6.3) | 1279 (7.4) | 516 (6.1) |
| IB | 2002 (6.7) | 1133 (6.2) | 684 (9.6) | 2135 (6.7) | 1212 (7.0) | 690 (8.2) |
| IIA | 679 (2.3) | 390 (2.1) | 222 (3.1) | 841 (2.6) | 429 (2.5) | 321 (3.8) |
| IIB | 1080 (3.6) | 491 (2.7) | 442 (6.2) | 1481 (4.6) | 688 (4.0) | 614 (7.3) |
| IIIA | 2709 (9.0) | 1335 (7.4) | 926 (13.0) | 3594 (11.3) | 1672 (9.6) | 1407 (16.6) |
| IIIB | 3996 (13.3) | 2008 (11.1) | 1263 (17.7) | 3735 (11.7) | 1625 (9.3) | 1371 (16.2) |
| IV | 14,544 (48.4) | 9453 (52.1) | 2489 (34.9) | 16,486 (51.6) | 9630 (55.4) | 3068 (36.3) |
| Missing | 2286 (7.6) | 1310 (7.2) | 560 (7.8) | 1664 (5.2) | 851 (4.9) | 470 (5.6) |
| Histology, n (%) | ||||||
| Nonsquamous NSCLC | 18,157 (60.4) | 18,157 (100) | 0 | 17,386 (54.4) | 17,386 (100) | 0 |
| Adenocarcinoma | 17,097 (56.9) | 17,097 (94.2) | 0 | 16,917 (53.0) | 16,917 (97.3) | 0 |
| Large cell carcinoma | 1060 (3.5) | 1060 (5.8) | 0 | 469 (1.5) | 469 (2.7) | 0 |
| Squamous cell carcinoma | 7134 (23.7) | 0 | 7134 (100) | 8457 (26.5) | 0 | 8457 (100) |
| NSCLC NOS | 4119 (13.7) | 0 | 0 | 4675 (14.6) | 0 | 0 |
| Other miscellaneous NSCLC | 657 (2.2) | 0 | 0 | 1421 (4.4) | 0 | 0 |
NOS, not otherwise specified; NSQ, nonsquamous cell carcinoma; Q, quartile; SQ, squamous cell carcinoma.
a
In the Swedish registry, the full lookback period was available. In the Danish registry, the lookback period was 2 years.