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. 2023 Oct 3;330(17):1631–1640. doi: 10.1001/jama.2023.20294

Table 2. Glycemic and Cardiometabolic Parameters at Week 52.

Parameter Tirzepatide Insulin lispro (n = 708)
15 mg (n = 236) 10 mg (n = 238) 5 mg (n = 242) Pooled (n = 716)
Primary end point
HbA1c, %a,b
Baseline, mean (SD) 8.80 8.80
Week 52, mean (95% CI) 6.69 (−2.2 to −2.0) 7.67 (−1.3 to −1.0)
Change from baseline at week 52 (95% CI) −2.11 (−2.2 to −2.0) −1.13 (−1.3 to −1.0)
Difference vs insulin lispro (95% CI) −0.98 (−1.17 to −0.79)
P value <.001
Confirmatory secondary end points
HbA1c, %a,b
Baseline, mean (SD) 8.74 8.78 8.88
Week 52, mean (95% CI) 6.53 (−2.4 to −2.1) 6.65 (−2.3 to −2.0) 6.88 (−2.1 to −1.8)
Change from baseline at week 52 (95% CI) −2.27 (−2.4 to −2.1) −2.15 (−2.3 to −2.0) −1.92 (−2.1 to −1.8)
Difference vs insulin lispro (95% CI) −1.13 (−1.37 to −0.90) −1.01 (−1.26 to −0.77) −0.79 (−1.01 to −0.56)
P value <.001 <.001 <.001
Participants met HbA1c target <7.0% at week 52, No. (%)a,c 172 (73) 171 (72) 140 (58) 483 (68) 256 (36)
Odds ratio vs insulin lispro (95% CI) 5.2 (3.6 to 7.5) 5.1 (3.5 to 7.4) 2.8 (2.0 to 3.9) 4.2 (3.2 to 5.5)
P value <.001 <.001 <.001 <.001
Body weight, kga,b
Baseline, mean (SD) 91.2 89.1 91.7 90.7 90.3
Week 52, mean (95% CI) 79.5 (−11.9 to −10.0) 81.2 (−10.2 to −8.3) 83.8 (−7.7 to −5.7) 81.5 (−9.5 to −8.4) 93.6 (2.1 to 4.2)
Change from baseline at week 52 (95% CI) −11.0 (−11.9 to −10.0) −9.2 (−10.2 to −8.3) −6.7 (−7.7 to −5.7) −9.0 (−9.5 to −8.4) 3.2 (2.1 to 4.2)
Difference vs insulin lispro (95% CI) −14.2 (−15.6 to −12.7) −12.4 (−13.9 to −11.0) −9.9 (−11.4 to −8.4) −12.2 (−13.4 to −10.9)
P value <.001 <.001 <.001 <.001

Abbreviations: HbA1c, glycated hemoglobin A1c; HDL, high-density lipoprotein; LDL, low-density lipoprotein; VLDL, very-low-density lipoprotein.

a

Data presented are using the treatment-regimen estimand.

b

Tested for superiority and controlled for type I error.

c

Tested for superiority; controlled for type I error only for pooled tirzepatide vs insulin lispro.