Table 1 Patient characteristics and ovarian stimulation protocol.

From: Time-lapse monitoring of fertilized human oocytes focused on the incidence of 0PN embryos in conventional in vitro fertilization cycles

 

TLM

Fixed-point observation

P-value

Patient number

77

33

 

Patient age (years)

37.4 ± 4.50

37.8 ± 4.39

0.6354

Indication for IVF

Female factors(1)

53 (68.8)

29(87.9)

0.0356

Male factors(2)

0 (0.0)

0 (0.0)

–

Others

24 (31.2)

4(12.1)

0.0356

Cycle number

149

48

 

Ovarian stimulation protocol

Controlled hyperstimulation(3)

64 (42.3)

11 (22.4)

0.0129

Minimal stimulation(4)

76 (51.0)

34 (71.4)

0.0161

No stimulation

9 (6.7)

3 (6.1)

1.0000

  1. (1) Female factors include women with ovulation disorders, tubal factors, and uterine anomalies, or otherwise unexplained infertility.
  2. (2) All patients who had a male factor were indicated for ICSI.
  3. (3) Controlled hyperstimulation was based on recombinant follicle-stimulating hormone injections and nasal gonadotropin-releasing hormone agonist sprays.
  4. (4) Minimal stimulation was based on oral clomiphene citrate tablets.
  5. Age is shown as the mean ± standard deviation, and all other data are shown as number (percentage).
  6. IVF in vitro fertilization; PN pronuclei; TLM time-lapse monitoring.
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