NSHD46 : Category 11041

Category 11041
Clinical data ⏵ Physical measures ⏵ ECG at rest, 12-Lead ⏵ Heart rate variability

Description

This category contains information on heart rate variability.

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19 Data-Fields

Field ID	Description
1990	Average HR of the 5 registration (HRV)
1991	Mean QT interval - msec (HRV)
1992	Variance QT interval - msec2 (HRV)
1993	Mean RR interval - msec (HRV)
1994	Variance RR interval - msec2 (HRV)
1995	Q-T variability index (HRV)
1996	High frequency power normalised to total power (HRV)
1997	High frequency power - ms2 (HRV)
1998	Power spectrum density squared (HRV)
1999	Low frequency power normalised to total power (HRV)
2000	Low frequency power - ms2 (HRV)
2001	Ratio between low and high frequency power (=LF Pow/HF Pow) - HRV
2002	Total power spectral density - ms2 (HRV)
2003	Standard deviation of all HR measures (HRV)
2004	Heart rate variability, square root of mean squared differences of normal to normal intervals - ms (HRV)
2005	Heart rate variability, standard deviation of normal to normal intervals - ms (HRV)
2006	Reflects the base of a triangle formed by all nn-intervals (HRV)
10347	Was Heart Rate Variability measured satisfactorily? - at age 60-64 years
10348	Explain why heart rate variability not measured satisfactorily - at age 60-64 years

1 Parent Category

Category ID	Description	Items
1104	ECG at rest, 12-Lead	81+19

National Survey of Health and Development 1946 Cohort