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

Table 1 Demographic and clinical characteristics overall and by OH group

	Overall		No OH		OH		P-value^h
	N=3144		N=2904		N=240		P-value^h
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

^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.
^bhistory of angina, stroke or myocardial infarction.
^cHospital Anxiety and Depression Scale ≥ 11 (range 0–21).
^dsymptoms of dizziness, lightheaded or unsteadiness on standing.
^emeasure obtained from venous sample.
^fBody Mass Index.
^gMini Mental State Examination (range 0–30).
^hcomparison of no OH and OH group based on t-test for continuous variables and X² for categorical variables.

ISSN: 1471-244X