What method should be used to define 'night' when assessing diurnal systolic blood pressure variation in the elderly?

@article{Robinson1995WhatMS,
  title={What method should be used to define 'night' when assessing diurnal systolic blood pressure variation in the elderly?},
  author={Thompson Gordon Robinson and Michael Anthony James and S Ward-Close and John F. Potter},
  journal={Journal of human hypertension},
  year={1995},
  volume={9 12},
  pages={993-9}
}
Diurnal blood pressure (BP) variation can be assessed by cusums-derived measures and by the day-night BP difference from time-, activity- and diary-defined 'night' periods. Reproducibility of diurnal systolic BP (SBP) variation by these different methods was studied in 19 active elderly normotensives, mean age 68.5 years. Subjects underwent simultaneous 24… CONTINUE READING