All‐cause mortality at day 28 · individuals with moderate or severe COVID‐19
Hyperimmune immunoglobulin from human plasma showed no clear difference in all‐cause mortality at day 28 compared with saline placebo (low certainty).
1 finding from 1 review
RR 0.79 [0.43, 1.44]
Studies not reported
Low
Worsening of clinical status at day 28 (data only available for clinical status worsened on day 7) · individuals with moderate or severe COVID‐19
It is very uncertain whether hyperimmune immunoglobulin from human plasma changes worsening of clinical status at day 28 (data only available for… compared with saline placebo (very low certainty).
1 finding from 1 review
RR 0.85 [0.58, 1.23]
Studies not reported
Very low
Improvement of clinical status · individuals with moderate or severe COVID‐19
Hyperimmune immunoglobulin from human plasma showed no clear difference in improvement of clinical status (number of people discharged from… compared with saline placebo (moderate certainty).
1 finding from 1 review
RR 1.02 [0.97, 1.08]
Studies not reported
Moderate
Quality of life · individuals with moderate or severe COVID‐19
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Adverse events: all grades · individuals with moderate or severe COVID‐19
Hyperimmune immunoglobulin from human plasma showed no clear difference in adverse events of any grade up to 28 days (data only available for… compared with saline placebo (low certainty).
1 finding from 1 review
RR 0.98 [0.81, 1.18]
Studies not reported
Low
Grades 3 and 4 adverse events · individuals with moderate or severe COVID‐19
Hyperimmune immunoglobulin from human plasma probably leads to higher adverse events at grades 3 to 4 up to 28 days compared with saline placebo (moderate certainty).
1 finding from 1 review
RR 4.09 [1.39, 12.01]
Studies not reported
Moderate
Serious adverse events up to day 28 (data available only as a composite of serious adverse events or death up to day 28) · individuals with moderate or severe COVID‐19
Hyperimmune immunoglobulin from human plasma showed no clear difference in serious adverse events up to day 28 (data available only as a… compared with saline placebo (low certainty).
1 finding from 1 review
RR 0.72 [0.45, 1.14]
Studies not reported
Low