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la/mBC - HER2 positive, HER inhibitor versus HER2 inhibitor, meta-analysis of study results

Outcome Relative effect 95%CI LoD Trt. better when I2 k (RCT/OBS) Bayesian probability Overall ROB Publication bias Degree of certainty Endpoint importance Published MA

efficacy endpoints 00

deaths (OS) 0.82 [0.59, 1.13]< 183%5 studies (5/-)88.5 %some concernnot evaluable moderatecrucial-
deaths (OS) (extension) 0.76 [0.67, 0.86]< 10%4 studies (4/-)100.0 %lownot evaluable highimportant-
PFS (extension) 0.69 [0.59, 0.81]< 10%1 study (1/-)100.0 %NAnot evaluable important-
progression or deaths (PFS) 0.75 [0.56, 1.02]< 186%4 studies (4/-)96.7 %lownot evaluable highimportant-
RFS/DFS 0.84 [0.70, 1.01]< 10%1 study (1/-)96.5 %NAnot evaluable important-
events or deaths (EFS) 0.78 [0.47, 1.29]< 10%1 study (1/-)83.4 %NAnot evaluable non important-
events or deaths (EFS) (extended) 0.89 [0.66, 1.22]< 10%2 studies (2/-)76.3 %some concernnot evaluable moderatenon important-
objective responses (ORR) 3.28 [0.33, 32.53]> 197%2 studies (2/-)84.4 %some concernnot evaluable moderatenon important-
pCR 1.42 [0.44, 4.60]> 190%2 studies (2/-)71.9 %some concernnot evaluable moderatenon important-

safety endpoints 00

AE leading to treatment discontinuation (any grade) 1.92 [0.77, 4.80]< 10%1 study (1/-)8.1 %NAnot evaluable non important-

AE (grade 3-4) endpoints 00

LoD: level of statistical demonstration: Statistically conclusive: statistically significant with a strict control of overall risk of type 1 error (statistically demonstrated), does not take into account the risk of bias; suggested: nominally statistically significant but without a strict control of overall risk of type 1 error; inconclusive: not nominally statistically significant; safety concerns;
Bayesian probability: Bayesian posterior probability of treatment effect (computed with a noninformative prior); ROB: risk of bias; k: number of studies; published MA: number of published meta-analysis on the same topic; degree of certainty adapted from GRADE. Trt. better when: indicates when the relative treatment effect shows that the studied treatment is better than control.