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Cholesterol Lowering and CV Risk: Meta-analyses
2
On-Treatment LDL and CHD Events in Statin Trials
Adapted from Rosenson RS. Expert Opin Emerg Drugs. 2004;9:269-279.LaRosa JC et al. N Engl J Med. 2005;352:1425-1435.
WOSCOPS - Rx
4S - Rx
LIPID - Rx
4S - PBO
CARE - Rx
LIPID - PBO
CARE - PBO
WOSCOPS - PBO
AFCAPS - PBOAFCAPS - Rx WOSCOPS - Rx
0
10
20
30
40(1.0)
60(1.6)
80(2.1)
100(2.6)
120(3.1)
140(3.6)
160(4.1)
180(4.7)
Secondary Prevention
Primary Prevention
200(5.2)
ASCOT - PBOASCOT - Rx
PROVE-IT - PRA
PROVE-IT - ATV80
TNT - ATV10Eve
nt r
ate
(%)
LDL-C achieved, mg/dL (mmol/L)
70(1.8)
HPS - PBO
HPS - Rx
TNT - ATV80
3
Second Cycle of the CTT Meta-analysis: Proportional Effects on Major VascularEvents Per Mmol/L LDL-C Reduction
0.5 0.75 1 1.25 1.5
Relative risk (CI) permmol/L LDL-C reduction
Statin/more better Control/less better
Statin vs. control
More vs. less statin
First cycle (14 trials)
A to Z PROVE-IT
ALLIANCE
ASPEN
TNT
4D
MEGA
IDEAL SEARCH
JUPITER GISSI-HF AURORA
5883 (3.1)
257 (7.2)406 (11.3)
254 (5.4)
114 (2.7)
889 (4.0)
144 (9.0)
102 (0.5)
938 (5.2)1347 (3.6)
105 (0.5)172 (2.2)362 (8.1)
7467 (4.0)
282 (8.1)458 (13.1)
293 (6.4)
136 (3.3)
1164 (5.4)
162 (10.1)
140 (0.7)
1106 (6.3)1406 (3.8)
194 (1.0)174 (2.2)368 (8.3)
0.78 (0.76 - 0.81)
Subtotal (21 trials) 7136 (2.8) 8934 (3.6) 0.79 (0.77 - 0.81)P < 0.001
Subtotal (5 trials) 3837 (4.5) 4416 (5.3) 0.72 (0.66 - 0.78)P < 0.001
Total (26 trials) 10973 (3.2) 13350 (4.0) 0.78 (0.76 - 0.80)P < 0.001
Difference between more vs. less and statin vs. control:c
12= 4.5, p=0.03
99% or 95% CI
No. of events (% pa)
Statin/more Control/less
Cholesterol Treatment Trialists Collaboration. Lancet. 2010;376:1670-1681.
4
Second Cycle of the CTT Meta-analysis:More vs Less Statin—Proportional Effects onMajor Vascular Events Per Mmol/L LDL-C Reduction
Cholesterol Treatment Trialists Collaboration. Lancet. 2010;376:1670-1681.
Nonfatal MI
CHD death
Any major coronary event
CABG
PTCA
Unspecified
Any coronary revascularization
Ischemic stroke
Hemorrhagic stroke
Unknown stroke
Any stroke
Any major vascular event(5 trials)
1175 (1.3%)
645 (0.7%)
1725 (1.9%)
637 (0.7%)
1166 (1.3%)
447 (0.5%)
2250 (2.6%)
440 (0.5%)
69 (0.1%)
63 (0.1%)
572 (0.6%)
3837 (4.5%)
1380 (1.5%)
694 (0.7%)
1973 (2.2%)
731 (0.9%)
1508 (1.8%)
502 (0.6%)
2741 (3.2%)
526 (0.6%)
57 (0.1%)
80 (0.1%)
663 (0.7%)
4416 (5.3%)
0.71 (0.58 - 0.87)
0.85 (0.63 - 1.15)
0.74 (0.65 - 0.85)P < 0.00010.72 (0.55 - 0.95)
0.60 (0.50 - 0.71)
0.78 (0.58 - 1.04)
0.66 (0.60 - 0.73)P < 0.00010.69 (0.50 - 0.95)
1.39 (0.57 - 3.39)
0.63 (0.24 - 1.66)
0.74 (0.59 - 0.92)P = 0.0070.72 (0.66 - 0.78)
No. of events (% pa) Relative risk (CI) permmol/L LDL-C reductionMore statin Less statin
More statin better Less statin better99% or 95% CI
0.5 0.75 1 1.25 1.5
5
Nonfatal MI
CHD death
Any major coronary event
CABG
PTCA
Unspecified
Any coronary revascularization
Ischemic stroke
Hemorrhagic stroke
Unknown stroke
Any stroke
Any major vascular event(all 21 trials)
2310 (0.9%)
1242 (0.5%)
3380 (1.3%)
816 (0.3%)
601 (0.2%)
1686 (0.6%)
3103 (1.2%)
987 (0.4%)
188 (0.1%)
555 (0.2%)
1730 (0.7%)
7136 (2.8%)
3213 (1.2%)
1587 (0.6%)
4539 (1.7%)
1126 (0.4%)
775 (0.3%)
2165 (0.8%)
4066 (1.6%)
1225 (0.5%)
163 (0.1%)
629 (0.2%)
2017 (0.8%)
8934 (3.6%)
0.74 (0.69 - 0.78)
0.80 (0.73 - 0.86)
0.76 (0.73 - 0.79)P < 0.0010.76 (0.69 - 0.83)
0.78 (0.69 - 0.89)
0.76 (0.70 - 0.83)
0.76 (0.73 - 0.80)P < 0.0010.80 (0.73 - 0.88)
1.10 (0.86 - 1.42)
0.88 (0.76 - 1.02)
0.85 (0.80 - 0.90)P < 0.0010.79 (0.77 - 0.81)P < 0.001
Second Cycle of the CTT Meta-analysis: Statin vs Control—Proportional Effects onMajor Vascular Events Per Mmol/L LDL-C Reduction
No. of events (% pa)
Statin ControlRelative risk (CI) per
mmol/L LDL-C reduction
Statin better Control better
99% or 95% CI
Cholesterol Treatment Trialists Collaboration. Lancet. 2010;376:1670-1681.
0.5 0.75 1 1.25 1.5
6
Meta-analysis of Statin Trials and Fatal and Nonfatal Stroke
Amarenco P et al. Lancet Neurol. 2009;8:453-463.
N = 165,732
Log-scale
Study
0.1
Active group(%)
Control group(%)
RR(95% CI)
Total: P < 0.0001 (heterogeneity: I2 = 7.3%, P = 0.36)
SEARCHJUPITERASPENMEGAIDEALTNTALLIANCECARDSPROVE-ITA TO ZASCOT-LLAALLHAT-LLTGREACEHPS (with no prior CVD)PROSPERMIRACLGISSIAFCAPS/TexCAPSLIPID (with no prior CVD)Post-CABGCARE (with no prior CVD)WOSCOPSSSSS
Sub-total: P < 0.0001 (heterogeneity: I2 = 26.6%, P = 0.12)
4.20.42.81.33.42.32.91.51.01.21.74.01.23.24.70.80.90.43.32.61.91.42.5
4.60.73.21.63.93.13.22.80.91.62.44.52.14.84.51.60.90.53.92.42.81.53.5
SPARCLHPS (with prior CVDLIPID (with prior CVD)CARE (with prior CVD)
Sub-total: P = 0.03 (heterogeneity: I2 = 0.8%, P = 0.39)
11.210.39.513.5
13.110.413.320.0
Primary prevention of stroke
0.2 0.5 1 2 5 10
0.91 (0.77, 1.08)0.52 (0.34, 0.78)0.89 (0.56, 1.40)0.83 (057,1.20)0.87 (0.70, 1.08)0.76 (0.60, 0.96)0.90 (0.58, 1.42)0.53 (0.31, 0.90)1.09 (0.59, 2.01)0.79 (0.48, 1.29)0.73 (0.56, 0.96)0.91 (0.76, 1.09)0.53 (0.24, 1.18)0.67 (0.57, 0.77)1.04 (0.82, 1.31)0.50 (0.25, 1.00)1.05 (0.56, 1.96)0.82 (0.41, 1.67)0.84 (0.67, 1.05)1.12 (0.58, 2.18)0.67 (0.44, 1.01)0.90 (0.61, 1.34)0.72 (0.51, 1.01)
0.81 (0.75, 0.87)
Secondary prevention of stroke
0.82 (0.77, 0.87
0.85 (0.73, 0.990.99 (0.81, 1.21)0.72 (0.46, 1.12)0.68 (0.37, 1.25)
0.88 (0.78, 0.99)
RR(95% CI)
7
Meta-analysis of Statin Trials and Stroke Mortality
Amarenco P et al. Lancet Neurol. 2009;8:453-463.
SEARCHJUPITERCARDSALLHAT-LLTGREACEHPSPROSPERMIRACLGISSILIPIDCAREWOSCOPSSSSS
Sub-total: P = 0.18 (heterogeneity: I2 = 0%, P = 0.48)
Study
Active group
(%)
Control group
(%)RR
(95% CI)
Primary prevention of stroke
0.90.30.11.00.00.90.80.20.20.50.20.20.6
1.10.70.51.10.11.20.50.10.20.60.10.10.5
0.85 (0.60, 1.21)0.50 (0.13, 2.00)0.14 (0.02, 1.15)0.95 (0.65, 1.38)0.33 (0.01, 8.17)0.81 (0.62, 1.05)1.58 (0.81, 3.09)1.51 (0.25, 9.02)1.00 (0.25, 3.98)0.81 (0.46, 1.43)4.99 (0.58, 42.70)1.50 (0.42, 5.30)1.17 (0.54, 2.52)
0.90 (0.76, 1.05)
RR(95% CI)
Secondary prevention of stroke
SPARCL
Total: P = 0.10 (heterogeneity: I2 = 8.1%, P = 0.36)
1.0 1.7 0.59 (0.36, 0.97)
0.87 (0.73, 1.03)
10.50.20.1 2 5 10Log-scale
8
Stroke Risk and LDL Lowering inStatin Trials
Each 1 mmol (39 mg) LDL-C reduction reduced the risk of stroke by 21% (95% CI, 6.3–33.5%; p<0.009)
N = 165,732
Amarenco P et al. Lancet Neurol. 2009;8:453-463.
1.1
1.2
1.0
0.9
0.8
0.7
0.6
0.5
0.4
-15-10 -20 -30 -35-25 -40 -45 -50 -55
Between Group Difference in LDL-Cholesterol Reduction, %(active minus control groups)
Rel
ativ
e R
isk
of
Str
oke
in
Act
ive
vs C
on
tro
l G
rou
ps
(no
n-l
og
sca
le)
LIPID
TNT
GISSI PROSPERPROVE-IT
Post-CABG
SPARCL-CS (-)
SPARCL
SPARCL-CS (+)
WOSCOPSASPEN
ALLHAT-LLTSEARCH
IDEALALLIANCE
CARE
CARDS
GREACEJUPITER
MIRACL
MEGA A to ZAFCAPS/TexCAPS
HPSASCOT-LLA
SSSS
00