Table 2 Pooled prevalence and combined odd ratio of anemia for stroke.
From: Anemia increases the mortality risk in patients with stroke: A meta-analysis of cohort studies
Category | Subgroup | NO. of Studies | Pooled OR/prevalence | 95%CI(%) | Z | P | I2(%) | *Phetero |
|---|---|---|---|---|---|---|---|---|
Prevalence of anemia | 13 | 21.9% | 13.6–30.3 | 5.17 | 0.000 | 99.8 | 0.000 | |
Total | ||||||||
univariate | 6 | 2.33 | 2.00–2.72 | 10.76 | 0.000 | 19.2 | 0.284 | |
Adjusted | 13 | 1.39 | 1.22–1.58 | 4.94 | 0.000 | 59.0 | 0.031 | |
Region | ||||||||
China | 7 | 1.60 | 1.36–1.89 | 5.59 | 0.000 | 0.0 | 0.486 | |
Others | 6 | 1.23 | 1.07–1.41 | 2.97 | 0.003 | 59.0 | 0.021 | |
Type of disease | ||||||||
Acute | 7 | 1.28 | 1.13–1.46 | 3.75 | 0.000 | 0.0 | 0.014 | |
Non-acute | 6 | 1.66 | 1.27–2.17 | 3.72 | 0.000 | 29.7 | 0.212 | |
Follow-up duration | <6 months | 6 | 1.244 | 1.08–1.43 | 3.07 | 0.000 | 56.2 | 0.019 |
≥6months | 7 | 1.58 | 1.34–1.86 | 5.42 | 0.000 | 10.7 | 0.348 | |
Male/Female ratio | ≤1.2 | 5 | 1.26 | 1.06–1.49 | 2.68 | 0.007 | 67.0 | 0.026 |
>1.2 | 8 | 1.50 | 1.30–1.72 | 5.70 | 0.000 | 0.0 | 0.000 | |
Sensitivity analysis | ||||||||
Type I* | 11 | 1.36 | 1.20–1.55 | 4.78 | 0.000 | 58.4 | 0.003 | |
Type II* | 12 | 1.58 | 1.37–1.82 | 6.30 | 0.000 | 14.7 | 0.300 | |
Type III* | 11 | 1.50 | 1.33–1.70 | 6.37 | 0.000 | 0.0 | 0.550 | |
Type IV* | 10 | 1.64 | 1.41–1.91 | 6.29 | 0.000 | 13.0 | 0.323 | |
Type V* | 10 | 1.57 | 1.38–1.78 | 6.97 | 0.000 | 11.6 | 0.334 | |
