Outcomes assessed | No of studies involved (n) | RR with 95% CIs | P value | I2 (%) |
---|---|---|---|---|
SLE versus APS | ||||
 Arterial and venous thrombosis | 3 | 3.95 [1.28–12.16] | 0.02 | 57 |
 Fetal loss | 4 | 4.49 [2.09–9.64] | 0.0001 | 6 |
 Stillbirth | 2 | 6.65 [2.14–20.60] | 0.001 | 0 |
 Low for gestational age | 3 | 1.73 [0.77–3.87] | 0.18 | 30 |
 Premature delivery | 5 | 1.07 [0.67–1.70] | 0.79 | 31 |
SLE versus PAPS | ||||
 Arterial and venous thrombosis | 3 | 4.15 [1.00–17.16] | 0.05 | 54 |
 Fetal loss | 3 | 4.89 [1.79–13.40] | 0.002 | 6 |
SLE versus SAPS | ||||
 Arterial and venous thrombosis | 2 | 7.73 [2.22–26.89] | 0.001 | 0 |
 Fetal loss | 5 | 5.92 [2.06–16.98] | 0.0009 | 52 |
 Stillbirth | 3 | 8.07 [2.81–23.15] | 0.0001 | 0 |
 Low for gestational age | 2 | 0.98 [0.40–2.36] | 0.96 | 0 |
 Premature delivery | 5 | 1.23 [0.54–2.80] | 0.62 | 69 |
PAPS versus SAPS | ||||
 Fetal loss | 4 | 0.86 [0.34–2.21] | 0.76 | 77 |
 Arterial and venous thrombosis | 3 | 1.11 [0.86–1.43] | 0.43 | 0 |