Validation review demonstrates high diagnostic validity in the Swedish Inpatient Register, indicating strong utility for large-scale population research.
In conclusion, the validity of the Swedish IPR is high for many but not all diagnoses. The long follow-up makes the register particularly suitable for large-scale population-based research, but for certain research areas the use of other health registers, such as the Swedish Cancer Register, may be more suitable.
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Ludvigsson et al. (2011) studied this question.
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