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Table 2 Baseline cognitive test (median) scores by tea group

From: Tea consumption and measures of attention and psychomotor speed in the very old: the Newcastle 85+ longitudinal study

  Low Tea Consumption (n = 213) High Tea Consumption (n = 463) p-value*
Global Cognitive Function
 MMSE (IQR) 28 (26, 29) 28 (26, 29) 0.168
Memory
 Memory (SI) Index (IQR) 0.61 (0.47, 0.71) 0.60 (0.47, 0.75) 0.462
Attention
 Power of Attention IQR) 1.49 (1.35, 1.68) 1.47 (1.35, 1.66) 0.442
 Continuity of Attention (IQR) 87.84 (80.67, 91.67) 87.17 (80.84, 100.00) 0.491
 Response Time Variability (IQR) 0.06 (0.52, 0.07) 0.59 (0.05, 0.07) 0.675
Speed
 Simple RT, sec (IQR) 0.39 (0.34, 0.49) 0.38 (0.34, 0.46) 0.149
 Choice RT, sec (IQR) 0.57 (0.52, 0.65) 0.57 (0.52, 0.64) 0.385
 Digit Vigilance RT, sec (IQR) 0.52 (0.48, 0.56) 0.51 (0.47, 0.56) 0.886
 Word recognition RT, sec (IQR) 1.31 (1.08, 1.85) 1.28 (1.07, 1.70) 0.212
  1. MMSE Mini Mental State Examination, SI sensitivity index, RT reaction time
  2. * Wilcoxon Rank sum (Mann-Whitney) test