Study | Design | Sample size | Follow-up | Findings |
---|---|---|---|---|
Schou (1976) | Prospective cohort study | Exposed = 60 Controls = 57 | Mean = 7 years | No difference in development based on questionnaire filled out by the mother |
Jacobson et al. (1992) | Prospective cohort study | Exposed = 22 Controls = n.r. | 1–9 years, mean = 61 weeks | No difference in attainment of milestones |
van der Lugt et al. (2012) | Cohort study | Exposed = 15 | 3–15 years | Normal developmental milestones (n = 15), minor neurological dysfunction (n = 1), low verbal + total IQ, normal performance IQ (n = 1), subclinical anxiety problems (n = 2), subclinical oppositional problems (n = 1) |
Forsberg et al. (2017) | Cohort study | Exposed = 20 Disease matched non-exposed = 8 Controls = 11 | 4–5 years | No differences in total, performance and verbal IQ |