Table 2.
Outcomes of effect evaluation and subgroups
| Group pathology reporting analyzed | n | Subgroup | Change in level between group (%) | p value | Change in level within group (%) | p value | Change in trend between group (%) | p value | Change in trend within group (%) | p value |
|---|---|---|---|---|---|---|---|---|---|---|
| Tumor groups | 32,298 | Gastrointestinal | Ref | +2.9% | p=.018A | Ref | −0.4% | p=.000a | ||
| 120,381 | Gynecological | −3.3 | p=.045A | +0.1% | p=.970 | −0.3% | p=.003A | −0.0% | p=.819 | |
| 60,806 | Urological | +0.2 | p=.928 | +3.0% | p=.003A | +0.4% | p=.001A | 0.0% | p=.903 | |
| Retrieval method | 91,705b | Biopsies | Ref | +0.6% | p=.661 | Ref | −0.0% | p=.589 | ||
| 124,691 | Resections | +1.4 | p=.355 | +2.5% | p=.007A | −.010% | p=.924 | −0.1% | p=.393 | |
| Type of laboratory | 188,665 | Non-academic | Ref | +2.2% | p=.053 | ref | −0.1% | p=.428 | ||
| 24,820 | Academic | +4.2 | p=.024A | −2.4% | p=.142 | +0.1% | p=.273 | −0.2% | p=.064 | |
aThis effect was significant, based on α<.05
bAs a result of a requested re-analysis, we included 2911 additional cases for this subgroup analysis only