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. 2021 Oct 7;58:00469580211047043. doi: 10.1177/00469580211047043

Table 4.

Conditions Associated with Blood Pressure Below 140/90 mmHg, N = 1321 a .

Characteristics Having blood pressure <140/90 mmHg
Cross-sectional analysisb,c Longitudinal analysisb,d
Odds ratio b [CI] e P value Odds ratio b [CI] e P value
Individual
 Age f .98 (95% CI .97–.99) .042 1.00 (95% CI .98–1.01) .998
 Sex 1.07 (95% CI .77–1.49) .662 .94 (95% CI .76–1.18) .642
 BMI .95 (95% CI .92–.98) .003 .96 (95% CI .94–.98) .001
 Having any related HBP condition g .98 (95% CI .69–1.40) .948 .77 (95% CI .61–.99) .044
Primary care performance
 Continuity of care
  COC 2.61 (95% CI 1.25–5.44) .010 NA
  Being attended by the same physician at the next clinic visit 1.52 (95% 1.28–1.80) <.001
 Patients-visit group h
  Five visits 1.27 (95% .79–2.03) .318 NA
  Six visits 1.32 (95% .85–2.05) .207 NA
 People at each chronological visit recorded i
  Second visit NA 1.12 (95% .91–1.39) .260
  Third visit NA 1.17 (95% .94–1.44) .141
  Fourth visit NA 1.34 (95% CI 1.08–1.66) .006
  Fifth visit NA 1.50 (95% CI 1.18–1.89) .001
  Sixth visit NA 2.25 (95% CI 1.71–2.96) <.001
 Interaction effect
 Clinic visit in chronological order b age NA
  Second visit NA .99 (95% CI .98–1.01) .904
  Third visit NA .98 (95% CI .97–1.00) .231
  Fourth visit NA .99 (95% CI .97–1.01) .588
  Fifth visit NA .98 (95% CI .97–1.00) .290
  Sixth visit NA .97 (95% CI .95–.99) .027
Total days between the first and the last clinic register over the study period i 1.00 (95% CI .99-1.00) .587 1.001 (95% CI 1.000–1.002) <.001
Diabetes .95 (95% CI .76-1.20) .684 1.010 (95% CI .822–1.240) .928

Note. N = number

aOnly people with all variables with valid values. Body mass index (BMI)

bAdjusted for diabetes.

cOutcome recorded from the last visit

dOutcome recorded over the study period.

eCI:Confidence interval

fCentered age = 67.9 years

gHaving at least one of the following HBP-related conditions: heart failure, coronary heart disease, impaired kidney function, or stroke

hPeople were classified by the total of number visits included as: those with 4, 5, or 6 registers.

iFor everyone, the first and last register corresponded to the first and last medical visit identified chronologically during the study period