Table 3—

Individual effects and correlates of cognitive disruptions during hyperglycemia

Study 1Study 2Study 3
Mean no. of SMBGs >15 mmol/l17.819.417.9
Number of tests significantly impaired: % subjects with impaired performance
    045%46%41%
    124%33%48%
    216%8%12%
    311%13%
% subjects with specific tests significantly affected by hyperglycemia
    Subtractions, speed21%38%19%
    Subtractions, errors20%21%52%
    A words20%21%
    Reaction time28%
    PSAT 14%
    PSAT 24%
Relationship with no. of cognitive tests impaired
    Durationr = −0.36*
    HbA1cr = 0.20r = −0.30*r = 0.34
    % SMBGs >15 mmol/lr = 0.20*r = −0.29r = 0.39
    Mean euglycemic performancer = −0.18r = −0.38*r = −0.19*
  • *

    * P < 0.05,

  • P < 0.1,

  • P < 0.01.