Prepare and join the two LPR2 registers to extract diabetes and pregnancy diagnoses.

The output is used as inputs to keep_diabetes_diagnoses() and to keep_pregnancy_dates().

Usage

prepare_lpr2(lpr_adm, lpr_diag)

Arguments

lpr_adm

The LPR2 register containing hospital admissions.

lpr_diag

The LPR2 register containing diabetes diagnoses.

Value

The same type as the input data, as a duckplyr::duckdb_tibble(), with the following columns:

• pnr: The personal identification variable.

• date: The date of all the recorded diagnosis (renamed from d_inddto or dato_start).

• is_primary_diagnosis: Whether the diagnosis was a primary diagnosis.

• is_diabetes_code: Whether the diagnosis was any type of diabetes.

• is_t1d_code: Whether the diagnosis was T1D-specific.

• is_t2d_code: Whether the diagnosis was T2D-specific.

• is_pregnancy_code: Whether the person has an event related to pregnancy like giving birth or having a miscarriage at the given date.

• is_endocrinology_dept: Whether the diagnosis was made by an endocrinology medical department.

• is_medical_dept: Whether the diagnosis was made by a non-endocrinology medical department.

See also

See the vignette("algorithm") for the logic used to filter these patients.