TABLE 6.
Country Survey name (N subjects) Reference | Dietary method (N of days) | Sex | Age range | % Folate supplement users in total survey sample/among supplements users | Folate a intake from supplements, P95 (μg/day) | % contribution of supplements to total folate intake, mean |
---|---|---|---|---|---|---|
Denmark DANSDA 2011–2013 (n = 3936) (Hindborg, 2015, Unpublished) |
Face‐to‐face interview |
m f m f |
18–50 y 18–50 y 51–75 y 51–75 y |
42/NR 51/NR 43/NR 55/NR |
NR |
27 29 29 34 |
Finland FINDIET 2017 (n = 1655) (Valsta et al., 2018) |
FPQ |
m f |
18–74 y |
23/NR 32/NR |
Mean 237 235 |
47.8 49.9 |
Germany NVS II 2005–2007 (n = 13,753) (Heuer et al., 2012; Martiniak et al., 2015) |
24‐h recall (2 days) | m‐f |
14–18 y 19–24 y 25–34 y 35–50 y 51–64 y 65–80 y |
2.7–3.3/NR 5–8.2/NR 6.4–10.4/NR 7.6–8.6/NR 7.5–11.5/NR 9.1–11.9/NR |
m 893 (b) f 1020 (b) |
m 50.6 (b) f 67.3 (b) |
Ireland NANS 2008–2010 (n = 1500) (Kehoe & Walton, 2022) |
Weighted food diary (4 days) | m + f |
18–64 y 65–91 y |
14.4/48.3 11.9/31.8 |
400 400 |
39.5 25.8 |
Netherlands DNFCS 2012–2016 (n = 4313) (Van Rossum et al., 2022) |
Questionnaire (online/paper) | m + f |
18–65 y 65–80 y |
m 15/41 f 22/39 m 14/40 f 22/38 |
m 579/f 564 m 500/f 592 |
NR |
Norway Norkost 3 2015 (n = 1787) (Totland et al., 2012; VKM et al., 2015) |
FFQ + food diary +24‐h dietary interviews |
m f |
18–70 y |
NR/18 NR/26 |
500 400 |
NA |
Poland National Dietary Survey 2019–2020 (n = 1831) (Stos et al., 2021) |
FPQ |
m f |
18–65+ y |
NR/NR NR/NR |
Mean ± SD (range) 278 ± 123 (150–600) 304.9 ± 227.4 (60–800) |
NA |
Slovenia SI.Menu 2017–2018 (n = 1248) (Pravst et al., 2021) |
FPQ | m + f |
18–64 y 65–74 y |
Multivitamins/folic acid only 36.5/1.9 22.6/0.2 |
NR | NR |
Abbreviations: d, day; DANSDA, The Danish National Survey of Diet and Physical Activity; DNFCS, Dutch National Food Consumption Survey; f, females; FINDIET, The Finnish National Dietary Survey in Adults and Elderly; FFQ, food frequency questionnaire; FPQ, food propensity questionnaire; m, males; N, number; NA, cannot be calculated; NANS, National Adult Nutrition Survey; NR, not reported in the publication; NVS II, Nationale Verzehrsstudie II (National Consumption Study II); SD, standard deviation; VKM, Vitenskapskomiteen format og miljø (Norwegian Scientific Committee for Food and Environment); y, year.
Folic acid is the most commonly used form in foods supplements.
Age range: 14–80 years.