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Table 4 Ambulatory blood pressure components in relation to cerebral microbleeds

From: Cerebral microbleeds are associated with nocturnal reverse dipping in hypertensive patients with ischemic stroke

BP component CMB p-value * Unadjusted OR p-value Adjusted OR p-value
Yes (n = 65) No (n = 97)
Morning BP surge        
Sleep-trough 16.7 ± 13.8 16.8 ± 14.8 0.96 1.00 (0.98-1.02) 0.96 0.99 (0.97-1.02) 0.51
Pre-wake 3.7 ± 13.4 5.5 ± 14.1 0.41 0.99 (0.97-1.01) 0.41 0.99 (0.97-1.02) 0.58
Awake nocturnal BP falls    0.27§   0.29   0.49
Dipper 18 (27.7%) 33 (34.0%)   Ref.   Ref.  
Non-dipper 28 (43.1%) 46 (47.4%)   1.12 (0.53-2.34) 0.77 1.28 (0.57-2.90) 0.55
Reverse dipper 19 (29.2%) 18 (18.6%)   1.94 (0.82-4.59) 0.13 1.71 (0.64-4.62) 0.29
Evening nocturnal BP falls    0.04§   0.03   0.04
Dipper 14 (21.5%) 33 (34.0%)   Ref.   Ref.  
Non-dipper 29 (44.6%) 47 (48.5%)   1.45 (0.67-3.17) 0.35 1.62 (0.67-3.92) 0.28
Reverse dipper 22 (33.8%) 17 (17.5%)   3.05 (1.25-7.43) 0.01 3.81 (1.36-10.65) 0.01
  1. Values are presented as mean ± standard deviation.
  2. For the nocturnal BP falls, figures denoted absolute number of cases and percentage in parentheses.
  3. *Independent T-test, unless otherwise specified.
  4. Logistic regression analysis. Data are presented as the odds ratios (OR) and 95% confidence interval.
  5. Adjusted for age, gender, LDL, 24-hour mean SBP/DBP.
  6. §Chi-square test.
  7. Abbreviations: CMB (cerebral microbleeds), BP (blood pressure).