| Bélanger et al. 2018 Canada (North Ontario) | Longitudinal | 2 6 9 12 18 24 | Extremely preterm 15 Very preterm 34 medium preterm 25 late preterm 23 | - |
| Genetic disorders | Alberta Infant Motor Scale (AIMS) Early Intervention Developmental Profile (EIDP) | To provide preliminary data on the gross motor outcomes of children born prematurely and to determine the proportion and characteristics of the children who had maintained delays over the course of follow-up | Late preterm infants were at risk of gross motor delays at all assessments. SGA was a crucial factor for developmental delays and intervention physiotherapy |
| Mirzakhani et al. 2020 USA | Longitudinal | 24 36 | 42 | 593 | 635 | Medium and extremely preterm infants | Ages and Stages Questionnaires 3 | To examine the stability of potential delays across developmental domains at 24 and 36 months of age in late preterm (34 - 36 weeks) and term (≥37 weeks) children and whether the risk of delays remained high at 36 months | Late preterm infants remained at risk of motor developmental delays at 24 and 36 months of age |
| Petkovic et al. 2016 France | Longitudinal | 6 12 | 12 | 10 |
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| Peabody Developmental Motor Scales, Βimanual coordination and handedness tests | To examine visuo-manual coordination and gross motor development at late preterm and full term infants | Late preterm infants had significant delays at visuo-manual coordination, grasp, bimanual dexterity, and handedness |
| Ramdin et al. 2018 South Africa | Longitudinal | 9 12 15 18 | 56 | 50 |
| Genetic disorders Trisomy 21 | Bayley scales of infant and toddler development 3 | To determine the neuro developmental outcome of late preterm infants in Johannesburg South Africa in comparison to a group of term control infants | There were no significant differences between the groups. Neonatal and maternal factors were not associated with motor developmental delays |
| Morag et al. 2013 Israel | Longitudinal | 6 12 | 124 | 33 |
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| Alberta Infant Motor Scale (AIMS) Griffiths Mental Development Scales (GMDS) | To longitudinally assess the neuro developmental outcomes of late preterm infants (LPI) through the first year of life and to investigate for perinatal conditions that may affect developmental outcomes | Late preterm infants had lower scores at every assessed domain, including motor, than the full-term infants at the age of 6 an 12 months |