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21 bamlanivimab/etesevimab COVID-19 controlled studies, 6 RCTs
52% improvement
for early treatment, RR
0.48
[0.30-0.77]
0
0.25
0.5
0.75
1
1.25
1.5
1.75
2+
Gottlieb (RCT)
71%
0.29 [0.09-0.96]
hosp./ER
4/101
7/52
Improvement, RR [CI]
Treatment
Control
Gottlieb (RCT)
80%
0.20 [0.03-1.56]
hosp./ER
1/37
7/52
Gottlieb (RCT)
75%
0.25 [0.03-1.92]
hosp./ER
1/30
7/52
Gottlieb (RCT)
56%
0.44 [0.10-1.98]
hosp./ER
2/34
7/52
Gottlieb (RCT)
92%
0.08 [0.01-0.92]
hosp./ER
0/31
7/52
Alam
75%
0.25 [0.10-0.85]
death
160 (n)
86 (n)
Alam
65%
0.35 [0.15-1.08]
hosp.
160 (n)
86 (n)
Karr
40%
0.60 [0.08-4.51]
hosp.
4/40
1/6
Karr
62%
0.38 [0.09-1.52]
hosp./ER
5/40
2/6
Corwin
80%
0.20 [0.03-1.42]
death
1/780
35/5,337
Corwin
39%
0.61 [0.45-0.79]
hosp.
57/780
490/5,337
Webb
80%
0.20 [0.03-1.46]
death
1/479
57/5,536
Webb
53%
0.47 [0.31-0.72]
hosp.
22/479
538/5,536
Webb
27%
0.73 [0.65-0.82]
hosp./ER
65/479
1,018/5,536
Dougan (DB RCT)
95%
0.05 [0.00-0.90]
death
0/518
9/517
Dougan (DB RCT)
70%
0.30 [0.16-0.59]
death/hosp.
11/518
36/517
Dougan (DB RCT)
11%
0.89 [0.82-0.97]
recov. time
518 (n)
517 (n)
Dougan (DB RCT)
67%
0.33 [0.25-0.45]
viral+
50/508
147/499
Cooper
-7%
1.07 [0.55-2.07]
death
12/2,900
33/8,534
Cooper
45%
0.55 [0.07-3.99]
death
1/473
33/8,534
Cooper
-17%
1.17 [0.59-2.32]
death
11/2,427
33/8,534
Cooper
17%
0.83 [0.53-1.30]
ICU
24/2,900
85/8,534
Cooper
58%
0.42 [0.10-1.72]
ICU
2/473
85/8,534
Cooper
9%
0.91 [0.57-1.45]
ICU
22/2,427
85/8,534
Cooper
24%
0.76 [0.65-0.89]
hosp.
181/2,900
703/8,534
Cooper
5%
0.95 [0.69-1.30]
hosp.
37/473
703/8,534
Cooper
28%
0.72 [0.61-0.86]
hosp.
144/2,427
703/8,534
Rubin
44%
0.56 [0.07-4.33]
death
1/191
10/1,066
Rubin
65%
0.35 [0.12-0.94]
hosp.
16/191
121/1,065
Leavitt
30%
0.70 [0.26-1.92]
hosp.
6/136
9/143
Leavitt
42%
0.58 [0.36-0.96]
misc.
20/136
36/143
Delasobera
-119%
2.19 [0.23-20.9]
death
3/253
1/185
Delasobera
52%
0.48 [0.27-0.85]
hosp.
17/253
26/185
Delasobera
20%
0.80 [0.46-1.40]
progression
23/253
21/185
Dale
89%
0.11 [0.02-0.55]
death
5/56
9/19
Dale
86%
0.14 [0.04-0.52]
progression
6/56
10/19
Dale
54%
0.46 [0.08-1.97]
progression
6/56
3/19
BLAZE-4
Dougan (RCT)
-51%
1.51 [0.26-8.90]
hosp.
3/127
2/128
CT1
BLAZE-4
Dougan (RCT)
9%
0.91 [0.88-0.93]
viral load
125 (n)
128 (n)
CT1
BLAZE-4
Dougan (RCT)
24%
0.76 [0.70-0.82]
viral load
125 (n)
128 (n)
CT1
BLAZE-4
Dougan (RCT)
12%
0.88 [0.84-0.91]
viral load
125 (n)
128 (n)
CT1
BLAZE-4
Dougan (RCT)
35%
0.65 [0.36-1.15]
viral+
16/127
25/128
CT1
Wilden
51%
0.49 [0.23-1.04]
hosp.
n/a
n/a
Fivelstad
-144%
2.44 [0.10-59.6]
death
1/335
0/148
Fivelstad
63%
0.37 [0.21-0.64]
hosp.
21/335
25/148
Kip
15%
0.85 [0.51-1.41]
death/hosp.
20/349
47/695
Kip
31%
0.69 [0.41-1.18]
death/hosp.
17/221
49/442
ACTIV-3
ACTIV-3/TIC.. (RCT)
-100%
2.00 [0.69-5.83]
death
9/163
5/151
Bariola
67%
0.33 [0.10-1.01]
death
4/234
12/234
Bariola
64%
0.36 [0.20-0.61]
death/hosp.
16/234
45/234
Bariola
61%
0.39 [0.22-0.70]
hosp.
15/234
39/234
Ganesh
74%
0.26 [0.05-1.20]
death
2/1,789
8/1,832
Ganesh
49%
0.51 [0.24-1.09]
ICU
10/1,789
20/1,832
Ganesh
37%
0.63 [0.43-0.91]
hosp.
44/1,789
72/1,832
Priest (PSM)
0%
1.00 [0.33-3.07]
death
6/379
6/379
Priest (PSM)
-4%
1.04 [0.78-1.38]
hosp.
79/379
76/379
Priest (PSM)
-5%
1.05 [0.73-1.52]
hosp./ER
379 (n)
379 (n)
ACTIV-2/A5401
Chew (RCT)
25%
0.75 [0.26-2.10]
hosp.
6/159
8/158
ACTIV-2/A5401
Chew (RCT)
52%
0.48 [0.09-2.49]
hosp.
2/48
4/46
ACTIV-2/A5401
Chew (RCT)
-1%
1.01 [0.26-3.93]
hosp.
4/111
4/112
ACTIV-2/A5401
Chew (RCT)
-14%
1.14 [0.00-455]
recov. time
48 (n)
46 (n)
ACTIV-2/A5401
Chew (RCT)
-17%
1.17 [0.98-1.40]
recov. time
111 (n)
112 (n)
ACTIV-2/A5401
Chew (RCT)
-1%
1.01 [0.86-1.17]
progression
42/48
40/46
ACTIV-2/A5401
Chew (RCT)
2%
0.98 [0.91-1.05]
progression
102/111
105/112
ACTIV-2/A5401
Chew (RCT)
26%
0.74 [0.62-0.90]
viral load
48 (n)
46 (n)
ACTIV-2/A5401
Chew (RCT)
35%
0.65 [0.40-1.04]
viral load
111 (n)
112 (n)
Lilly (RCT)
57%
0.43 [0.28-0.67]
symp. case
483 (n)
482 (n)
Lilly (RCT)
80%
0.20 [0.08-0.47]
symp. case
150 (n)
149 (n)
Bamlanivimab/etesevimab COVID-19 outcomes
c19 early .org
November 2024
1 CT: study uses combined treatment
Favors bamlanivimab/e..
Favors control
Figure S2. Comparison of results for RCTs versus observational studies.
For COVID-19 treatments, there is no significant difference between the results of RCTs and observational studies. Observational studies do not systematically over or underestimate efficacy. For high-cost treatments, there is a non-significant trend towards RCTs showing greater efficacy.
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