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. 2013 Jan 3;13:1. doi: 10.1186/1471-2377-13-1

Table 3.

Subgroup analysis for the effect of fibrates therapy on stoke, and fatal stroke

 
Group
Stroke event/total patients
Relative risk (RR)
P value
Heterogeneity
P value for heterogeneity
    Fibrates Placebo        
stroke
Published years
 
after 2000
341/10062
351/10052
0.97 (0.84 to 1.13)
0.72
0%
0.51
 
before 2000
292/8013
471/9664
1.06 (0.84 to 1.33)
0.63
52%
0.08
 
Number of patients
 
≥1000
573/17689
775/19332
0.99 (0.87, 1.12)
0.85
23%
0.26
 
<1000
60/386
47/384
1.23 (0.80, 1.90)
0.34
30%
0.24
 
Mean age
 
<60
32/5331
27/5296
1.18 (0.71 to 1.96)
0.53
-
-
 
≥60
405/11326
439/11319
0.93 (0.80 to 1.08)
0.34
17%
0.30
 
Gender
 
male
329/8749
498/10401
1.09 (0.86 to 1.38)
0.47
56%
0.06
 
Male/female
304/9326
324/9315
0.95 (0.82 to 1.10)
0.48
0%
0.77
 
Drug
 
clofibrate
228/6749
383/8397
1.15 (0.98 to 1.34)
0.08
0%
0.59
 
bezafibrate
132/2331
126/2327
1.05 (0.80 to 1.38)
0.37
21%
0.26
 
gemfibrozil
64/1335
90/1339
0.72 (0.53 to 0.98)
0.04
0%
0.41
 
fenofibrate
209/7660
223/7653
0.94 (0.78 to 1.13)
0.49
0%
0.49
 
Control
 
corn or olive oil
55/5378
49/5344
1.11 (0.80 to 1.54)
0.53
0%
0.76
 
placebo
572/12697
761/14372
1.02 (0.88 to 1.17)
0.83
32%
0.17
 
Follow-up
 
≥60 months
421/12924
612/14575
1.01 (0.90 to 1.14)
0.85
0%
0.62
 
<60 months
212/5151
210/5141
1.05 (0.76 to 1.46)
0.75
59%
0.05
 
Total cholesterol
 
≥6.0 mmol/L
228/6749
383/8397
1.15 (0.98 to 1.34)
0.08
0%
0.59
 
<6.0 mmol/L
405/11326
439/11319
0.93 (0.80 to 1.08)
0.34
17%
0.30
 
Total cholesterol lowering
 
≥5%
409/12230
586/13890
1.04 (0.92 to 1.18)
0.49
0%
0.51
 
<5%
173/3080
188/3073
0.98 (0.67 to 1.45)
0.93
71%
0.03
 
Triglyceride lowering
 
≥30%
101/1603
113/1603
0.96 (0.46 to 1.99)
0.92
74%
0.02
 
<30%
477/11094
660/12769
1.02 (0.91 to 1.15)
0.69
0%
0.51
 
Pre-exsistent diseases
 
stroke
60/315
45/312
1.28 (0.86 to 1.90)
0.23
35%
0.22
 
diabetes
209/7660
223/7653
0.94 (0.78 to 1.13)
0.49
0%
0.49
 
other
364/10100
554/11751
1.00 (0.83 to 1.20)
0.99
36%
0.16
 
Jadad score
 
4
481/11575
699/13251
0.95 (0.82 to 1.09)
0.48
30%
0.22
 
<4
152/6500
123/6465
1.22 (0.98 to 1.52)
0.07
0%
0.58
 
Overall
633/18075
822/19716
1.02 (0.90 to 1.16)
0.78
27%
0.20
Fatal stroke
Published years
 
after 2000
17/3548
17/3538
0.93 (0.33 to 2.60)
0.89
51%
0.15
 
before 2000
24/6910
35/6875
0.70 (0.41 to 1.19)
0.18
0%
0.47
 
Number of patients
 
≥1000
34/10143
40/10101
0.82 (0.45 to 1.48)
0.51
32%
0.22
 
<1000
7/315
12/312
0.59 (0.23 to 1.47)
0.26
0%
0.59
 
Mean age
 
<60
14/5331
14/5296
0.99 (0.47 to 2.08)
0.99
-
-
 
≥60
20/4812
26/4805
0.69 (0.27 to 1.75)
0.44
53%
0.12
 
Gender
 
male
35/7646
39/7612
0.89 (0.53 to 1.51)
0.67
19%
0.30
 
Male/female
6/2812
13/2801
0.46 (0.18 to 1.21)
0.12
0%
0.85
 
Drug
 
clofibrate
21/5646
26/5608
0.81 (0.45 to 1.44)
0.47
0%
0.59
 
bezafibrate
13/783
9/785
1.45 (0.62 to 3.37)
0.39
-
-
 
gemfibrozil
3/1264
9/1267
0.33 (0.09 to 1.23)
0.10
-
-
 
fenofibrate
4/2765
8/2753
0.50 (0.15 to 1.65)
0.25
-
-
 
Control
 
corn or olive oil
16/5378
19/5344
0.85 (0.43 to 1.66)
0.63
0%
0.32
 
placebo
25/5151
33/5141
0.73 (0.38 to 1.40)
0.34
30%
0.23
 
Follow-up
 
≥60 months
16/5378
19/5344
0.85 (0.43 to 1.66)
0.63
0%
0.32
 
<60 months
25/5080
33/5069
0.73 (0.38 to 1.40)
0.34
30%
0.23
 
Total cholesterol
 
≥6.0 mmol/L
21/5646
26/5608
0.81 (0.45 to 1.44)
0.47
0%
0.59
 
<6.0 mmol/L
20/4812
26/4805
0.69 (0.27 to 1.75)
0.44
53%
0.12
 
Total cholesterol lowering
 
≥5%
29/6161
28/6129
1.04 (0.62 to 1.76)
0.87
0%
0.38
 
<5%
8/1532
16/1531
0.51 (0.22 to 1.20)
0.12
0%
0.40
 
Triglyceride lowering
 
≥30%
8/1532
16/1531
0.51 (0.22 to 1.20)
0.12
0%
0.40
 
<30%
17/3548
17/3538
0.93 (0.33 to 2.60)
0.89
51%
0.15
 
Pre-exsistent diseases
 
stroke
7/315
12/312
0.59 (0.23 to 1.47)
0.26
0%
0.59
 
diabetes
4/2765
8/2753
0.50 (0.15 to 1.65)
0.25
-
-
 
other
30/7378
32/7348
0.91 (0.45 to 1.83)
0.78
42%
0.18
 
Jadad score
 
4
7/4029
17/4020
0.41 (0.17 to 1.00)
0.05
0%
0.66
 
<4
34/6429
35/6393
0.97 (0.60 to 1.57)
0.91
0%
0.51
  Overall 41/10458 52/10413 0.79 (0.51 to 1.23) 0.30 6% 0.38