Appendix 1.
The components underlying the construction of the 10 subscales within the NND score (n=75)
| Subscale | Related question(s) | Response alternatives and coding | Calculations (min-max) | Median=cut-off | Dietary behavior associated with scoring |
|---|---|---|---|---|---|
| Meal pattern | How often do you eat -Breakfast -Lunch -Dinner -Evening meal/supper |
Never=0 Less than once a week=0.5 Once a week=1 Twice a week=2 Three times a week=3 Four times a week=4 Five times a week=5 Six times a week=6 Every day=7 |
Sum of answers to the four questions (0–28) |
Women: 25.0 Men: 25.0 |
Women: <25.0=0 ≥25.0=1 Men: ≤25.0=0 >25.0=1 |
| Nordic fruits | How often do you eat typical Nordic fruits (apple, pear, plum) | Never=0 Less than once a week=0.5 Once a week=1 Twice a week=2 Three times a week=3 Four times a week=4 Five times a week=5 Six times a week=6 Every day=7 Several times a day=10 |
No calculation (0–10) |
Women: 4.0 Men: 3.5 |
Women: ≤4.0=0 >4.0=1 Men: ≤3.5=0 >3.5=1 |
| Root vegetables | How often do you eat root vegetables (e.g. carrot, rutabaga, onion)? | Never=0 up to Several times a day=10 |
No calculation (0–10) |
Women: 5.0 Men: 4.5 |
Women: ≤5.0=0 >5.0=1 Men: ≤4.5=0 >4.5=1 |
| Cabbages | How often do you eat cabbages (e.g. cauliflower, broccoli, Brussels sprouts, kale)? | Never=0 up to Several times a day=10 |
No calculation (0–10) |
Women: 3.0 Men: 3.0 |
Women: ≤3.0=0 >3.0=1 Men: <3.0=0 ≥3.0=1 |
| Potatoes vs. rice/pasta | How often do you eat -Potatoes -Rice -Pasta |
Never=0 up to Several times a day=10 |
Frequency of eating potatoes relative to eating rice and pasta combined: potatoes/(0.1 +rice+pasta) (0–100) |
Women: 0.49 Men: 0.39 |
Women: ≤0.49=0 >0.49=1 Men: <0.39=0 ≥0.39=1 |
| Whole grain breads vs. white breads | How often do you eat -Refined breads/bread rolls -Whole grain breads -Whole grain hard breads |
Never=0 up to Several times a day=10 |
Frequency of eating whole grain breads and whole grain hard breads combined relative to eating refined breads: (whole grain breads+whole grain hard breads)/(0.1+refined breads) (0–200) |
Women: 15.0 Men: 9.6 |
Women: ≤15.0=0 >15.0=1 Men: ≤9.6=0 >9.6=1 |
| Oatmeal | How often do you eat oatmeal? | Never=0 up to Several times a day=10 |
No calculation (0–10) |
Women: 1.0 Men: 0.75 |
Women: <1.0=0 ≥1.0=1 Men: ≤0.75=0 >0.75=1 |
| Foods from the wild countryside | How often do you eat -Game (e.g. moose, reindeer, deer) -Lean fish (e.g. cod, Pollock, haddock) -Fatty fish (e.g. mackerel, herring, halibut) -Other seafood (e.g. shrimps, crabs, mussels -Berries |
Never=0 up to Several times a day=10 |
Sum of answers to the five questions (0–50) |
Women: 4.5 Men: 4.5 |
Women: <4.5=0 ≥4.5=1 Men: ≤4.5=0 >4.5=1 |
| Milk vs. juice | How often do you drink -Milk -Fruit juice without added sugar |
Never=0 up to Several times a day=10 |
Frequency of drinking milk relative to drinking fruit juice: milk/(0.1+juice) (0–100) |
Women: 1.29 Men: 2.5 |
Women: ≤1.29=0 >1.29=1 Men: ≤2.5=0 >2.5=1 |
| Water vs. sugar/artificially sweetened beverages | How often do you drink -Water -Sugar-sweetened beverages -Artificially sweetened beverages |
Never=0 up to Several times a day=10 |
Frequency of drinking water relative to drinking sugar-sweetened beverages and artificially sweetened beverages combined: water/(0.1+sugar-sweetened beverages+artificially sweetened beverages) (0–100) |
Women: 6.25 Men: 2.8 |
Women: ≤6.25=0 >6.25=1 Men: ≤2.8=0 >2.8=1 |
NND, New Nordic Diet.