Table 6.
Skill | Result | N | Country | Study design | Author |
---|---|---|---|---|---|
Sitting in lap without support |
Mean age: 5.54 m SD 2.08 m |
98 | US | Longitudinal | Carruth and Skinner (2002) |
Sitting alone |
Mean age: 5.4 m Range 3.8–9.2 m |
816 | GH, IN, NO, OM, USa | Longitudinal | WHO Multicentre Growth Reference Study Group (2006) |
Sitting alone | Mean age: 5.6–6.0 m depending on the group of infants investigated | 105 | US | Longitudinal | Heinig et al. (1993) |
Sitting alone |
Median age: 6 m Range: 4–9 m |
189 | CN | Retrospective | Wang et al. (2019) |
Sitting alone |
Median age: 6.3 m IQR: 6.0–7.2 m |
542b | IT | Longitudinal | Agostoni et al. (2009) |
Sitting alone |
Mean age: 6.66 m SD 1.03 m |
13,076 | JP | Longitudinal | Yokoyama et al. (2011) |
Sitting up from lying position |
Mean age: 6.9 m SD 1.3 m |
140c | HN | Longitudinal | Dewey et al. (2001) |
Sitting up from lying position |
Mean age: 7.8 m SD 1.6 m |
108d | HN | Longitudinal | Dewey et al. (2001) |
CN: China; GH: Ghana; HN: Honduras; IN: India; IQR: interquartile age; IT: Italy; JP: Japan; m: months; NO: Norway; OM: Oman, US: United States.
Gross motor milestones were not assessed in the Brazilian study site.
Infants in the control group of a randomised controlled trial.
Appropriate and small‐for‐gestational age infants.
Small‐for‐gestational age infants.