Research Article
Regular Chinese Green Tea Consumption Is Protective for Diabetic Retinopathy: A Clinic-Based Case-Control Study
Table 2
Characteristics of study population.
| | | Cases () | Controls () | value |
| | Education | | | | | No formal education | 28 (28) | 33 (33) |
0.68 | | Primary education | 39 (39) | 31 (31) | | Secondary education | 21 (21) | 24 (24) | | Tertiary education | 12 (12) | 12 (12) | | Height (cm) | 161.3 (7.8) | 161 (7.3) | 0.82 | | Weight (Kg) | 62.4 (9.9) | 62.2 (9.7) | 0.90 | | Body mass index | 23.9 (3.1) | 24 (3.8) | 0.81 | | Systolic blood pressure (mmHg) | 134.9 (14.7) | 130.9 (11.7) | 0.04 | | Diastolic blood pressure (mmHg) | 83.4 (8.8) | 82.9 (8.1) | 0.72 | | Smoking status | | | | | No smoking history | 75 (75) | 70 (70) |
0.61 | | Past smoker | 12 (12) | 12 (12) | | Current smoker | 13 (13) | 18 (18) | | Alcohol drinking | | | | | No alcohol drinking history | 86 (86) | 86 (86) |
0.18 | | Past alcohol drinker | 5 (5) | 1 (1) | | Current alcohol drinker | 9 (9) | 13 (13) | | Duration of diabetes (years) | 8.9 (5.3) | 7.3 (5.4) | 0.04 | | Insulin therapy | 15 (15) | 19 (19) | 0.45 | | Family history of diabetes | 24 (24) | 11 (11) | 0.02 | | Physical activity | 34 (34) | 39 (39) | 0.46 | | Fasting blood glucose (mmol/L) | 7.43 | 7.73 | 0.34 |
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Bold type indicates statistical significance ().
Data presented are means (standard deviations) or number (%), as appropriate for variable.
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