Table 6.

Comparison of vitamin D intake from various food groups (µg per day) in the sub-groups of underweight, normal weight, overweight and obese female post-primary school students.

Vitamin D Source	Body Mass Index (BMI) Classification								p Value ***
	Underweight (n = 445)		Normal Weight (n = 3234)		Overweight (n = 482)		Obesity (n = 308)
	Intake (%)	Median ** (Min–Max)	Intake (%)	Median ** (Min–Max)	Intake (%)	Median ** (Min–Max)	Intake (%)	Median ** (Min–Max)
Total intake from food	100.00	2.24 (0.01–23.14)	100.00	2.33 (0.02–29.3)	100.00	2.30 (0.04–24.98)	100.00	2.42 (0.01–25.97)	0.7471
Intake from fish and fish products Salmon, rainbow trout, herring, and eel Halibut, mackerel, brook trout, sole, and tuna Cod, flounder, plaice, pollock, and hake Herring, sardine, and tuna products Other fish products	29.53	0.46 (0.00–19.18) 0.25 (0.00–15.20) 0.00 (0.00–3.20) 0.00 (0.00–0.56) 0.00 (0.00–8.24) 0.00 (0.00–0.37)	31.04	0.53 (0.00–27.28) 0.25 (0.00–21.25) 0.00 (0.00–5.90) 0.00 (0.00–1.25) 0.00 (0.00–12.36) 0.00 (0.00–0.93)	30.71	0.50 (0.00–18.79) 0.25 (0.00–17.50) 0.00 (0.00–4.00) 0.00 (0.00–0.63) 0.00 (0.00–4.94) 0.00 (0.00–0.62)	31.45	0.47 (0.00–21.47) 0.25 (0.00–15.53) 0.00 (0.00–4.20) 0.00 (0.00–0.80) 0.00 (0.00–0.62) 0.00 (0.00–0.31)	0.7428 0.723 0.7571 0.5637 0.7054 0.7914
Dairy products Eggs Meat and meat products Cereals Fats	18.48 20.78 19.80 7.10 4.32	0.30 (0.00–3.84) 0.36 (0.00–8.71) 0.40 (0.00–3.60) 0.12 (0.00–0.98) 0.04 (0.00–1.01)	18.43 20.67 19.07 6.98 3.82	0.32 (0.00–4.93) 0.38 (0.00–8.11) 0.37 (0.00–4.20) 0.12 (0.00–2.48) 0.04 (0.00–3.20)	17.56 21.62 20.43 6.04 3.63	0.30 (0.00–3.16) 0.49 (0.00–7.50) 0.40 (0.00–4.09) 0.14 (0.00–0.98) 0.04 (0.00–2.93)	18.82 19.94 20.05 6.53 3.20	0.31 (0.00–3.33) 0.43 (0.00–3.71) 0.42 (0.00–4.33) 0.10 (0.00–2.04) 0.03 (0.00–1.85)	0.1302 0.5984 0.7790 0.364 0.1844

** Non-parametric distribution (verified using Shapiro-Wilk test, p ≤ 0.05), *** compared using Kruskal-Wallis analysis of variance (ANOVA).