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Table 6 Subgroup analysis of ADSCs transplantation on neurological improvement after stroke

From: Efficacy of adipose derived stem cells on functional and neurological improvement following ischemic stroke: a systematic review and meta-analysis

Variable

Effect size

SMD (95% CI)

p value

Heterogeneity (p value)

Species

 Mice

NA

NA

NA

 Rat

2.16 (1.38 to 2.94)

< 0.0001

89.0% (< 0.0001)

Duration of occlusion

 ≤ 60 min

4.32 (3.15 to 5.49)

< 0.0001

43.6% (0.183)

 > 60 min

1.56 (0.98 to 2.13)

< 0.0001

79.3% (< 0.0001)

Stroke model

 MCAO

2.51 (1.46 to 3.56)

< 0.0001

90.2% (< 0.0001)

 Carotid clamp

0.98 (0.60 to 1.36)

< 0.0001

0.0% (0.683)

Type of administration

 Intracranial

2.66 (0.42 to 4.90)

0.020

93.8% (< 0.0001)

 Intravenous

2.35 (0.98 to 3.71)

< 0.001

89.1% (< 0.0001)

 Intra-artery

1.14 (0.63 to 1.65)

< 0.0001

50.8% (0.131)

Type of graft

 Autograft

1.40 (0.66 to 2.14)

< 0.0001

22.5% (0.256)

 Allograft

1.82 (0.86 to 2.77)

< 0.0001

86.0% (< 0.0001)

 Xenograft

2.83 (0.81 to 4.84)

0.006

94.2% (< 0.0001)

Number of transplanted cells

 1 × 104 to 5 × 105

1.19 (0.92 to 1.45)

< 0.0001

85.4% (< 0.0001)

 1 × 106 to 1.2 × 106

2.99 (2.05 to 3.92)

< 0.0001

47.1% (0.169)

 2 × 106

2.31 (1.64 to 2.98)

< 0.0001

95.4% (< 0.0001)

Interval time from stroke to treatment

 0 to 3 h

2.07 (1.29 to 2.85)

< 0.0001

63.3% (0.028)

 24 h

2.05 (0.99 to 3.10)

< 0.0001

92.0% (< 0.0001)

 More than 7 days

No data

No data

No data

Follow up duration

 < 28 days

1.74 (0.68 to 2.79)

0.001

87.8% (< 0.0001)

 ≥ 28 days

2.28 (1.20 to 3.36)

< 0.0001

89.1% (< 0.0001)

  1. CI Confidence interval, MCAO Middle cerebral artery occlusion, NA Not applicable due to limited number of studies in the subgroup, SMD Standardized mean difference