Table 2.
Baseline characteristics of 25 included populations
| Total | Cohort | Cross sectional | Case control | |
|---|---|---|---|---|
| N studies | 25a | 15b | 8 | 3 |
| Mean age | 36-73.7 | 36-67 (n = 11) | 43.6-73.7 | 53.3-64.7 |
| Mean % male | 14.5-68.5 | 18.7-56.9 | 14.5-58.8 | 53.1-68.5 |
| Mean BMI | 23-30.8 | 23-30 (n = 12) | 23.6-30.8 (n = 5) | 26.9-27.2 (n = 2) |
| N analyzed | 110-410,701 | 1981-410,701 | 110-41,391 | 390-2658 |
| Follow-up duration | 0-24 years | 2-24 years | NA | NA |
| Baseline health | ||||
| Healthy | 5 | 4 | 1 | |
| Overweight/obese | 5 | 1 | 3 | 1 |
| At risk or with CVD | 10 | 7 | 2 | 2 |
| Not reported | 5 | 3 | 2 | |
| Study country | ||||
| Asia Pacific | 2 | 2 | ||
| Europe | 14 | 8 | 5 | 1 |
| Middle East | 2 | 1 | 1 | |
| USA | 7 | 6 | 1 | 1 |
| Intervention type | ||||
| Potatoes | 11 | 5 | 5 | 1 |
| Boiled | 1 | 1 | ||
| Fried | 3 | 2 | 1 | |
| Mixed sourcec | 10 | 8 | 2 | 1 |
| Funding type | ||||
| Academia | 2 | 1 | 1 | |
| Government | 14 | 9 | 4 | 2 |
| Mixed source | 7 | 4 | 3 | |
| Not reported | 2 | 1 | 1 | |
BMI body mass index, CVD cardiovascular disease, N number; NA not applicable
aNHS is reported for both longitudinal and case-control results, so it has only been counted once in total
b15 cohorts are in 20 publications
cReported combined results of various potato preparations