Objective: To compare weight and height of in vitro fertilization (IVF) -conceived children and spontaneously conceived children at
the stage of 5 to 30 months in Tu Du hospital from 2016 to 2018. Methods: This is a prospective, controlled, cohort study. A total of
429 in vitro fertilization -conceived children, were compared with 509 spontaneous conceived children. All children were full-term
singletons. The Control group was selected to match the study group for age. Primary end-points were height and weight. Results:
No significant differences were observed between the IVF children and controls regarding weight (9.7±2.3 vs. 9.5±1.9) and height
(74.8±7.7 vs75.0±6.9). The percentage of overweight and obese of IVF conceived children was significantly higher than that of
natural children (11% vs. 7.1%, p= 0.037). However, no significant difference was found in the percentage of overweight and obese
between the groups of age in the study. Conclusion: the study was not found a significant difference between children conceived
after IVF treatment and naturally conceived children in terms of weight and height from 5 to 30 months.
Keywords: Growth, in vitro fertilization, the weight of children, the height of children