Table 1 Frequency distribution of demographic and drinking beverages variables in the case and control group
From: A case–control study of drinking beverages and the risk of multiple sclerosis in Iran
Participant Characteristics | Level | Case = 146 | Control = 277 | ||
|---|---|---|---|---|---|
N | % | N | % | ||
Gender | Female | 117 | 80.10 | 162 | 58.50 |
Male | 29 | 19.90 | 115 | 41.50 | |
Marital status | Single | 38 | 26.00 | 68 | 24.50 |
Married | 100 | 68.50 | 168 | 60.60 | |
Divorced/widow | 8 | 5.50 | 41 | 14.80 | |
Education | Less than high school | 19 | 13.10 | 78 | 28.10 |
High school | 47 | 32.20 | 103 | 37.20 | |
University | 80 | 54.80 | 96 | 34.70 | |
Milk (g/day) | 0 | 58 | 39.70 | 220 | 79.40 |
> 0 | 88 | 60.30 | 57 | 20.6 | |
Natural juice (g/day) | 0 | 59 | 40.40 | 184 | 66.40 |
> 0 | 87 | 59.60 | 93 | 33.60 | |
Juice packet (g/day) | 0 | 74 | 50.70 | 194 | 70.00 |
> 0 | 72 | 49.40 | 83 | 30.00 | |
Non-alcoholic beer (g/day) | 0 | 98 | 67.10 | 178 | 64.30 |
> 0 | 48 | 32.90 | 99 | 35.70 | |
Black tea (g/day) | < 500 | 107 | 73.70 | 109 | 39.40 |
≥ 500 | 39 | 24.70 | 168 | 60.60 | |
Green tea (g/day) | < 16 | 132 | 90.40 | 223 | 80.50 |
≥ 16 | 14 | 9.60 | 54 | 19.50 | |
Coffee (g/day) | 0 | 110 | 75.30 | 158 | 57.00 |
> 0 | 36 | 24.70 | 119 | 43.00 | |
Carbonated beverages (g/day) | 0 | 42 | 28.80 | 155 | 56.00 |
> 0 | 104 | 71.20 | 122 | 44.00 | |