Table 2.
Factors Associated With SLN Adoption
| Factor | Used SLN Technique for EC Staging, No. (%) | P Valuea |
|---|---|---|
| Years since completing training | .23 | |
| <3 (n=40) | 15 (37.5) | |
| 3-10 (n=135) | 68 (50.4) | |
| >10 (n=314) | 163 (51.9) | |
| Country | <.001 | |
| Europe (n=201) | 101 (50.2) | |
| US (n=118) | 82 (69.5) | |
| Other than US or Europe (n=117) | 42 (35.9) | |
| Not reported (n=53) | 21 (39.6) | |
| Country’s income categoryb | <.001 | |
| High income (n=340) | 196 (57.6) | |
| Upper middle income (n=51) | 20 (39.2) | |
| Lower middle income (n=44) | 9 (20.5) | |
| Low or country not reported (n=54) | 21 (38.9) | |
| Type of institution | .04 | |
| Academic center (n=346) | 186 (53.8) | |
| Nonacademic center (n=122) | 51 (41.8) | |
| Other (n=19) | 7 (36.8) | |
| Item not answered (n=2) | 2 (100) | |
| No. of ECs surgically treated at institution per year | <.001 | |
| <10 (n=15) | 3 (20.0) | |
| 10-20 (n=44) | 8 (18.2) | |
| 21-50 (n=111) | 54 (48.6) | |
| 51-100 (n=144) | 75 (52.1) | |
| 101-200 (n=115) | 65 (56.5) | |
| >200 (n=58) | 40 (69.0) | |
| Item not answered (n=2) | 1 (50.0) | |
| Type of MIS available at institution | <.001 | |
| Laparoscopic and robotic (n=250) | 87 (34.8) | |
| Laparoscopic only (n=211) | 133 (63.0) | |
| Robotic only (n=5) | 3 (60.0) | |
| Neither (n=23) | 20 (87.0) | |
| MIS as first-line choice for the treatment of apparent early stage EC at institution | <.001 | |
| Yes (n=407) | 234 (57.5) | |
| No (n=79) | 11 (13.9) | |
| Item not answered (n=3) | 1 (33.3) | |
| Frozen-section pathology commonly used (>50% of cases) to assess uterine risk | .03 | |
| Yes (n=238) | 132 (55.5) | |
| No (n=250) | 114 (45.6) | |
| Item not answered (n=1) | 0 (0) |
Abbreviations: EC, endometrial cancer; MIS, minimally invasive surgery; SLN, sentinel lymph node; US, United States.
a
Two-sided χ2 test for categorical variables and the Cochran-Armitage test for trend for the number of ECs treated at the institution per year. The “not reported” or “item not answered” categories were ignored in the statistical comparisons between categories.
b
The country’s income category is based on the World Bank list of economies as of March 2017.