No. of visits No. of examinations No. of examinations Sum of the Number* Sum of the Number* protocol Protocol duration(days) Average rate of lost(%)(95% CI)
1 1 1 1 2 Ultrasound 1 18.59[NaN]
1 1 2 2 3 hCG cut-off 1 11.19[5.79, 16.59]
Progesterone 1
Activin A 1
FFN 1
1 1 3 3 4 Progesterone+hCG 1 7.50[NaN]
2 2 3 3 5 M4 2 18.63[11.93, 25.33]
hCG ratio 2
M1 2
Ultrasound+hCG ratio 2
2 2 4 4 6 M6 2 9.29[8.87, 9.71]
3 3 3/4 3/4 6/7 P1 2/7 5.49[NaN**]