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. 2012 Feb;141(2 Suppl):e637S–e668S. doi: 10.1378/chest.11-2306

Table 9.

—[Sections 3.2.1-3.2.5] Prasugrel Plus Aspirin vs Clopidogrel Plus Aspirin in Patients With a Recent ACS and PCI57

Outcomes Participants (Studies), Follow-up Quality of the Evidence (GRADE) Relative Effect (95% CI) Anticipated Absolute Effects Over 1 y
Risk With Clopidogrel and Aspirin Risk Difference With Prasugrel and Aspirin (95% CI)
Vascular mortalitya
13,608 (1 RCT), 14.5 mo
Low due to inconsistencyb and imprecisionc
RR 0.89 (0.70-1.12)
50 per 1,000d
No significant difference; 5 fewer per 1,000 (from 15 fewer to 6 more)
MI nonfatal events
13,608 (1 RCT), 14.5 mo
Moderate due to inconsistencyc
RR 0.76 (0.67-0.85)
70 per 1,000d
17 fewer per 1,000 (from 23 fewer to 10 fewer)
Stroke includes nonfatal ischemic and hemorrhagic strokese
13,608 (1 RCT), 14.5 mo
Low due to inconsistencyb and imprecisionc
RR 1.02 (0.71-1.45)
13 per 1,000d
No significant difference; 0 more per 1,000 (from 4 fewer to 6 more)
Major extracranial bleed 13,608 (1 RCT), 14.5 mo Low due to inconsistencyb and imprecisionc RR 1.32 (1.03-1.68) 22 per 1,000d 7 more per 1,000 (from 0 more to 15 more)

See Table 1-3, and 8 legends for expansion of abbreviations.

a

Fatal bleeds were 0.4% with prasugrel and 0.1% with clopidogrel.

b

Rated down for inconsistency for all outcomes due to credible subgroup analyses showing net harm for composite end point in certain subgroups.

c

Rated down for imprecision due to wide CIs suggesting important benefit or harm with prasugrel.

d

Control group risk estimates come from the event rates in the clopidogrel arm of the PLATO study, adjusted to a 1-y time frame.

e

Hemorrhagic strokes constituted 0.3% of all strokes in both groups.

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