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Table 1 Demographic and clinical characteristics overall and by OH group

From: Oscillometric measure of blood pressure detects association between orthostatic hypotension and depression in population based study of older adults

  Overall No OH OH P-valueh
  N=3144 N=2904 N=240
Age mean (SE) 69.3 (.18) 69.1 (.17) 71.6 (.59) t= -4.29 <0.001
Female sex n (%) 1650 52.0 1506 51.2 144 61.8 X2= 5.89 0.01
Education: n (%)         
  Primary 1075 44.0 988 43.6 87 49.2 X2= .489 0.48
  Secondary 1141 38.3 1062 38.6 79 33.5 X2= 1.29 0.26
  Tertiary 926 17.7 852 17.7 74 17.4 X2= .232 0.65
Current smoker n (%) 393 13.2 360 13.1 33 14.4 X2= .371 0.54
Hypertension a n (%) 1830 59.5 1667 58.7 163 69.4 X2= 10.5 0.002
Antihypertensive medications n (%) 1466 47.3 1324 46.7 122 54.3 X2= 3.14 0.08
Psychotropic medication n (%) 193 6.1 181 6.2 12 5.0 X2=585 0.44
History cardiovascular disease b n (%) 389 13.1 368 13.4 21 9.6 X2= 3.14 0.08
Diabetes n (%) 270 8.8 249 8.7 21 9.5 X2=.009 0.90
Anxiety c n (%) 150 5.7 138 5.6 12 5.9 X2= .036 0.87
Orthostatic symptoms d n (%) 20 8.5 0 0 20 8.5 X2=243 <0.001
High cholesterol e mean (SE) 4.95 (.02) 4.95 (.07) 4.99 (.07) t= -.627 0.53
BMI f mean (SE) 27.7 (.05) 28.7 (.09) 27.8 (.19) t=2.35 0.01
MMSE g mean (SE) 27.3 (.19) 28.0 (.19) 27.2 (.88) t=2.12 0.04
  1. amean of 2 seated systolic blood pressures is ≥140 mmHg and/or mean of 2 seated diastolic blood pressures is ≥90 mmHg or currently taking antihypertensive medications.
  2. bhistory of angina, stroke or myocardial infarction.
  3. cHospital Anxiety and Depression Scale ≥ 11 (range 0–21).
  4. dsymptoms of dizziness, lightheaded or unsteadiness on standing.
  5. emeasure obtained from venous sample.
  6. fBody Mass Index.
  7. gMini Mental State Examination (range 0–30).
  8. hcomparison of no OH and OH group based on t-test for continuous variables and X2 for categorical variables.