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. 2021 Jan 13;372:m4573. doi: 10.1136/bmj.m4573

Table 4.

GRADE summary of findings to illustrate absolute effects based on cardiovascular and renal risk, for all cause mortality for sodium-glucose cotransporter-2 (SGLT-2) inhibitors and glucagon-like peptide-1 (GLP-1) receptor agonists compared with placebo or each other

Comparison Relative effect (odds ratio (95% CI)) Anticipated absolute effects over five years Anticipated absolute effects (95% CI) over five years Certainty in treatment effects (GRADE) Plain text summary
Baseline risk* Risk with control Risk with intervention
SGLT-2 inhibitor v placebo 0.85 (0.79 to 0.92) Very low Placebo: 20 per 1000 SGLT-2 inhibitor: 17 per 1000 3 fewer per 1000
(from 2 fewer to 4 fewer)
Moderate due to indirectness SGLT-2 inhibitor treatment probably reduces all cause mortality in people with diabetes and few or no cardiovascular risk factors
Low Placebo: 70 per 1000 SGLT-2 inhibitor: 60 per 1000 10 fewer per 1000
(from 6 fewer to 15 fewer)
High SGLT-2 inhibitor treatment reduces all cause mortality in people with diabetes and cardiovascular risk factors
Moderate Placebo: 120 per 1000 SGLT-2 inhibitor: 102 per 1000 18 fewer per 1000
(from 10 fewer to 25 fewer)
High SGLT-2 inhibitor treatment reduces all cause mortality in people with diabetes and established cardiovascular disease
High Placebo: 170 per 1000 SGLT-2 inhibitor: 144 per 1000 26 fewer per 1000
(from 14 fewer to 36 fewer)
High SGLT-2 inhibitor treatment reduces all cause mortality in people with diabetes and chronic kidney disease
Very high Placebo: 265 per 1000 SGLT-2 inhibitor: 225 per 1000 40 fewer per 1000
(from 21 fewer to 56 fewer)
High SGLT-2 inhibitor treatment reduces all cause mortality in people with diabetes and established cardiovascular disease and chronic kidney disease
GLP-1 receptor agonist v placebo 0.88 (0.83 to 0.94) Very low Placebo: 20 per 1000 GLP-1 receptor agonist: 18 per 1000 2 fewer per 1000 (from 1 fewer to 3 fewer) Moderate due to indirectness GLP-1 receptor agonist treatment probably reduces all cause mortality in people with diabetes and few or no cardiovascular risk factors
Low Placebo: 70 per 1000 GLP-1 receptor agonist: 62 per 1000 8 fewer per 1000
(from 4 fewer to 11 fewer)
High GLP-1 receptor agonist treatment reduces all cause mortality in people with diabetes and cardiovascular risk factors
Moderate Placebo: 120 per 1000 GLP-1 receptor agonist: 107 per 1000 13 fewer per 1000
(from 6 fewer to 18 fewer)
High GLP-1 receptor agonist treatment reduces all cause mortality in people with diabetes and established cardiovascular disease
High Placebo: 170 per 1000 GLP-1 receptor agonist: 153 per 1000 17 fewer per 1000
(from 9 fewer to 25 fewer)
High GLP-1 receptor agonist treatment reduces all cause mortality in people with diabetes and chronic kidney disease
Very high Placebo: 265 per 1000 GLP-1 receptor agonist: 241 per 1000 24 fewer per 1000
(from 12 fewer to 35 fewer)
High GLP-1 receptor agonist treatment reduces all cause mortality in people with diabetes and established cardiovascular disease and chronic kidney disease
SGLT-2 inhibitor v GLP-1 receptor agonist 0.95 (0.86 to 1.06) Very low GLP-1 receptor agonist: 18 per 1000 SGLT-2 inhibitor: 17 per 1000 1 fewer per 1000
(from 1 more to 3 fewer)
Moderate due to indirectness SGLT-2 inhibitor treatment and GLP-1 receptor agonist treatment probably have similar effects on all cause mortality in people with diabetes and few or no cardiovascular risk factors
Low GLP-1 receptor agonist: 62 per 1000 SGLT-2 inhibitor: 58 per 1000 4 fewer per 1000
(from 4 more to 10 fewer)
High SGLT-2 inhibitor treatment and GLP-1 receptor agonist treatment have similar effects on all cause mortality in people with diabetes and cardiovascular risk factors
Moderate GLP-1 receptor agonist: 107 per 1000 SGLT-2 inhibitor: 101 per 1000 6 fewer per 1000
(from 7 more to 17 fewer)
High SGLT-2 inhibitor treatment and GLP-1 receptor agonist treatment have similar effects on all cause mortality in people with diabetes and established cardiovascular disease
High GLP-1 receptor agonist: 153 per 1000 SGLT-2 inhibitor: 144 per 1000 9 fewer per 1000
(from 10 more to 24 fewer)
High SGLT-2 inhibitor treatment and GLP-1 receptor agonist treatment have similar effects on all cause mortality in people with diabetes and chronic kidney disease
Very high GLP-1 receptor agonist: 241 per 1000 SGLT-2 inhibitor: 228 per 1000 13 fewer per 1000
(from 16 more to 37 fewer)
High SGLT-2 inhibitor treatment and GLP-1 receptor agonist treatment have similar effects on all cause mortality in people with diabetes and established cardiovascular disease and chronic kidney disease

GRADE=grading of recommendations assessment, development, and evaluation.

*

Risk categories represent the following patient populations: very low=no or less than three cardiovascular risk factors; low=three or more cardiovascular risk factors; moderate=cardiovascular disease; high=chronic kidney disease (reduced glomerular filtration rate or macroalbuminuria); very high=cardiovascular disease and chronic kidney disease.

The point estimate of the absolute effect for GLP-1 receptor agonist treatment, obtained from GLP-1 receptor agonist treatment versus placebo, was used to calculate the absolute effect for SGLT-2 inhibitors versus GLP-1 receptor agonists.