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Table 3 Stage-related outcome after laser therapy in TTTS

From: The use of endoscopy in fetal medicine

0 survivors 1 survivor 2 survivors at least 1 survivor
Stage I (n = 29) 6.9 (0.8–22.8) (2/29) 17.2 (5.9–35.8) (5/29) 75.9 (56.5–89.7) (22/29) 93.1 (77.2–99.2) (27/29)
Stage II (n = 81) 17.3 (9.8–27.3) (14/81) 22.2 (13.7–32.8) (18/81) 60.5 (49.0–71.2) (49/81) 82.7 (72.7–90.2) (67/81)
Stage III (n = 80) 17.5 (9.9–27.6) (14/80) 28.7 (19.2–40.0) (23/80) 53.8 (42.2–65.0) (43/80) 82.5 (72.4–90.1) (66/80)
Stage IV (n = 10) 30 (6.7–65.2) (3/10) 20 (2.5–55.6) (2/10) 50 (18.7–81.3) (5/10) 70 (34.8–93.3) (7/10)
  1. Data is given as % of pregnancies (95% confidence interval) and (number of pregnancies with given number of survivors/ total number of pregnancies at this Quintero stage); adapted from Huber [58]