Table 3

Analyses of covariance examining the association between tea consumption and cognitive function

Adjusted
model
Fully adjusted
model
Fηp2P valueFηp2P value
Total sample
 MoCA0.270.0000.6010.450.000 0.501
 HVLT total10.650.0060.001*11.520.007 0.001*
 HVLT delay4.360.0020.037*4.450.003 0.035*
 DST forward3.260.0020.0714.650.003 0.031*
 DST backward0.710.0000.3980.160.000 0.693
CH
 MoCA0.110.0000.7440.080.000 0.617
 HVLT total10.510.0100.001*10.320.012 0.001*
 HVLT delay6.390.0060.012*5.170.006 0.023*
 DST forward3.100.0030.0784.470.005 0.035*
 DST backward0.400.0000.5290.880.001 0.350
MCI
 MoCA0.180.0000.6690.310.000 0.577
 HVLT total0.950.0010.3301.070.001 0.302
 HVLT delay0.010.0000.9280.070.000 0.739
 DST forward0.210.0000.6480.040.000 0.840
 DST backward0.020.0000.8830.240.000 0.623
  • Adjusted model: adjusted for age, sex and education; fully adjusted model: additional adjustment for smoking and drinking history; heart disease also controlled for entire sample and healthy controls.

  • *p<0.05.

  • CH, cognitively healthy; DST, Digit Span Test; HVLT, Hopkins Vocabulary Learning Test; MCI, mild cognitive impairment; MoCA, Montreal Cognitive Assessment; ηp2, partial eta square estimate.