Table 2.

Profile of participants in the UK National Diet and Nutrition Survey Rolling Programe Years 1–11 (2008–19): all years combined^a

Core and boost sample combined, unweighted numbers
Individual response	Ageb
	1.5–3 years	4–10 years	11–18 years	Total	19–64 years	65 years	Total	All
				children		and over	adults	participants
	n	n	n	n	n	n	n	n
Diet
Male	717	1571	1619	3907	2519	781	3300	7207
Female	658	1440	1651	3749	3617	1082	4699	8448
Total	1375	3011	3270	7656	6136	1863	7999	15 655
24-h urinec,d
Male	–	445	509	954	823	237	1060	2014
Female	–	430	491	921	1135	310	1445	2366
Total	–	875	1000	1875	1958	547	2505	4380
Spot urined,e
Male	–	642	616	1258	1023	329	1352	2610
Female	–	474	586	1060	1468	426	1894	2954
Total	–	1116	1202	2318	2491	755	3246	5564
DLWd,f
Male	–	74	104	178	145	59	204	382
Female	–	73	101	174	151	64	215	389
Total	–	147	205	352	296	123	419	771
Blood sample
Male	76	366	631	1073	1341	393	1734	2807
Female	82	299	560	941	1904	543	2447	3388
Total	158	665	1191	2014	3245	936	4181	6195

^aAt time of writing, data only published/available for Years 1–11 (2008–18/19).

^bThe age groups shown are those used for the National Diet and Nutrition Survey Rolling Programme reports.

^c24-h urine samples were included in Years 1 to 5 for participants aged 4 years and above only.

^dSome numbers differ from published reports due to the different ways of classifiying ‘obtained samples’.

^eSpot urine samples were included in Years 6 to 11 for participants aged 4 years and above only.

^fThe doubly labelled water sub-study was included in Years 1, 3, 6 and 7 for participants aged 4 years and above only.