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Table 4 Values of laboratory tests during study period

From: Effects of green tea consumption on cognitive dysfunction in an elderly population: a randomized placebo-controlled study

FAS Baseline 3 months 6 months 9 months 12 months
NPI-Q: Total symptom score, mean ± SD
 Placebo 1.7 ± 2.3 2.0 ± 2.8 2.4 ± 3.0 1.9 ± 2.0 2.6 ± 3.2
 Green tea 3.1 ± 4.4 2.7 ± 3.1 2.7 ± 3.6 2.0 ± 2.4 1.6 ± 2.0
NPI-Q: Total distress score, mean ± SD
 Placebo 1.7 ± 2.3 1.3 ± 2.5 2.2 ± 3.5 2.0 ± 3.7 2.1 ± 3.0
 Green tea 3.2 ± 4.5 1.9 ± 2.6 2.5 ± 4.5 2.1 ± 3.5 1.3 ± 1.6
Blood pressure
 SBP (mmHg), mean ± SD
 Placebo 122.5 ± 17.8 125.3 ± 14.1 120.5 ± 17.3 116.2 ± 14.6 122.0 ± 16.3
 Green tea 125.6 ± 15.7 125.4 ± 17.0 129.1 ± 23.7 125.0 ± 13.5 121.3 ± 12.2
 DBP (mmHg), mean ± SD
 Placebo 69.3 ± 10.3 72.3 ± 11.7 65.9 ± 11.3 65.1 ± 13.6 66.8 ± 10.9
 Green tea 73.4 ± 10.7 72.8 ± 12.6 75.5 ± 14.0 68.3 ± 10.4 70.7 ± 8.0
Serum lipid levels
 TC (mg/dL), mean ± SD
 Placebo 185.7 ± 20.3 188.7 ± 20.7 189.6 ± 24.3 187.9 ± 25.1 184.7 ± 27.8
 Green tea 180.4 ± 36.3 182.1 ± 35.3 178.8 ± 32.6 176.0 ± 34.9 169.4 ± 25.9
HDL-C (mg/dL), mean ± SD
 Placebo 46.4 ± 9.2 47.7 ± 8.0 50.6 ± 9.7 48.1 ± 8.4 47.0 ± 8.9
 Green tea 47.4 ± 11.0 48.6 ± 11.3 50.1 ± 11.0 50.9 ± 10.5 47.8 ± 9.5
LDL-C (mg/dL), mean ± SD
 Placebo 114.8 ± 19.5 114.1 ± 18.8 113.6 ± 21.3 114.4 ± 21.5 111.1 ± 24.0
 Green tea 110.2 ± 30.4 107.4 ± 28.8 105.4 ± 29.5 100.9 ± 29.4 95.0 ± 22.1
TG (mg/dL), mean ± SD
 Placebo 127.8 ± 52.7 115.4 ± 34.9 106.3 ± 34.2 103.7 ± 39.4 115.7 ± 42.6
 Green tea 122.6 ± 48.9 117.0 ± 45.1 106.7 ± 31.7 92.7 ± 37.5 117.1 ± 53.2
MDA-LDL (U/L), mean ± SD
 Placebo 84.3 ± 14.7 86.8 ± 16.6 100.1 ± 25.2 90.0 ± 18.1 100.9 ± 20.0
 Green tea 88.3 ± 35.1 89.9 ± 29.8 94.5 ± 26.7 88.9 ± 37.5 89.9 ± 19.9
Blood glucose levels
 FPG (mg/dL), mean ± SD
 Placebo 115.4 ± 37.3 118.1 ± 35.3 105.4 ± 26.9 115.7 ± 33.7 112.0 ± 32.1
 Green tea 116.8 ± 34.0 110.8 ± 30.8 120.0 ± 38.5 119.9 ± 26.7 126.9 ± 41.2
HbA1c (%), mean ± SD
 Placebo 5.6 ± 0.6 5.6 ± 0.7 5.6 ± 0.6 5.6 ± 0.5 5.6 ± 0.5
 Green tea 5.5 ± 0.4 5.6 ± 0.5 5.6 ± 0.5 5.6 ± 0.5 5.6 ± 0.6
  1. DBP diastolic blood pressure, FAS full analysis set, FPG fasting plasma glucose, HbA1c hemoglobin A1c, HDL-C high-density lipoprotein cholesterol, LDL-C low-density lipoprotein cholesterol, LSM least square mean, MDM-LDL malondialdehyde-modified low-density lipoprotein, NPI-Q Neuropsychiatric Inventory Questionnaire, SBP systolic blood pressure, SD standard deviation, TC total cholesterol, TG triglycerides