Table 2.

Pooled Estimates of Event Rates in Pregnancy with heart disease.

Outcomes	Number of Studies	Pooled Event Rate	95% CI	I 2 Estimate (%)
Pregnancy with heart disease	17 [[11], [12], [13], [14],18,19,[21], [22], [23], [24], [25], [26], [27], [28],30,31,33]	1.46	0.99–2.01	99
Preterm labor and delivery among mother with heart disease	21 [[9], [10], [11], [12], [13], [14], [15],[17], [18], [19], [20],[22], [23], [24], [25], [26], [27],[29], [30], [31],33]	17.63	12.18–23.8	92
Maternal mortality among mother with heart disease	23 [[9], [10], [11], [12], [13], [14],[16], [17], [18], [19], [20], [21], [22], [23], [24], [25], [26], [27], [28], [29], [30], [31],33]	26.14/1000	12.47–43.55/1000	72
Fetal or perinatal mortality in baby of mother with heart disease	23 [[9], [10], [11], [12], [13], [14], [15], [16], [17], [18], [19], [20], [21], [22], [23], [24], [25], [26], [27], [28], [29],31,33]	50.48/1000	29.59–75.83/1000	81