Table 1 The distribution of dermoscopic and clinical images across different population groups.

From: A longitudinal dataset of tile and corresponding dermoscopic images with metadata for identifying skin cancers

			General population			High-risk population
			196 participants up to 7 visits (on average 6.1 visits)			156 participants up to 5 visits (on average 4.6 visits) 128 participants 1 visit
Characteristics			Number of			Number of
Characteristics			Participant	Tile images	Dermoscopic images	Participant	Tile images	Dermoscopic images
Age Group (years)	≤ 35		11	1,308	135	19	3,954	529
	36 – 45		23	2,359	444	48	17,611	1,043
	46 – 55		33	6,458	968	71	42,063	1,467
	56 – 65		61	13,595	1,188	76	64,887	1,284
	> 66		68	20,472	1,365	70	77,455	966
Gender	Male		110	29,737	2,517	109	111,602	1,947
Gender	Female		86	14,455	1,583	175	94,368	3,342
Eye colour	Blue or grey		95	19,939	1,948	143	104,798	2,690
	Green or Hazel		69	18,901	1,470	112	80,689	1,964
	Brown		32	5,352	682	29	20,483	635
Hair colour	Red or auburn		6	1,078	111	37	29,724	526
	Fair or blonde		32	6,520	631	77	57,224	1,524
	Light brown		80	16,006	1,445	96	59,082	1,698
	Dark brown		64	15,147	1,548	61	46,410	1,264
	Black		14	5,441	365	9	12,298	206
Ethnicity and ancestry	British/Irish		121	28,493	2,644	193	141,789	3,360
	Western-Northern Europe		48	9,826	826	60	43,191	1,216
	Southern Europe		4	1,101	137	3	4,172	55
	Eastern Europe		12	1,582	204	12	6,198	263
	Other		11	3,190	289	16	10,620	395
Innate skin colour	Fair		146	33,218	3,095	244	176,067	4,503
	Medium		48	10,622	946	39	29,720	760
	Olive		1	69	18	0	0	0
Facultative skin colour	Fair		36	7,078	656	116	76,185	2,049
	Medium		147	34,663	3,265	165	128,400	3,172
	Olive		12	2,168	138	3	1,385	68
Freckling score	1–4		29	4,921	584	45	22,753	958
	5–8		136	28,953	2,895	210	157,149	3,758
	9 +		30	10,212	621	30	26,068	573
Occupational sun exposure	Mainly indoor		116	24,725	2,584	207	130,384	3,820
	Both indoor and outdoor		54	13,440	1,039	65	62,456	1,124
	Mainly outdoor		27	6,027	477	10	10,698	225
Leisure sun exposure	Low		106	25,203	2,053	128	113,610	2,371
	Medium		64	13,454	1,447	112	66,756	2,034
	High		26	5,535	600	42	23,269	764
History of sunburn	Childhood	0–5	114	21,698	2,289	167	116,352	3,047
	Childhood	6+	82	22,494	1,811	115	87,183	2,122
	youth	0–5	76	13,894	1,514	109	74,778	2,007
	youth	6+	120	30,298	2,586	173	128,757	3,162
	Adulthood	0–5	136	30,019	2,914	185	135,609	3,336
	Adulthood	6+	60	14,173	1,186	96	67,781	1,802
Participant history of skin cancer	No		124	28,905	2,538	6	6,446	94
Participant history of skin cancer	Yes		72	15,287	1,562	209	142,642	3,857
Family history of melanoma	No		146	29,885	2,934	87	58,660	1,478
Family history of melanoma	Yes		50	14,307	1,166	177	130,039	3,275
Number of lesions on each body part location	Head and neck			1,724	221		5,285	345
	Arm			8,801	1,153		41,737	828
	Leg			13,718	912		65,877	1,368
	Torso back			11,600	1,139		56,443	1,689
	Torso front			6,710	661		31,902	875
	Other			1,638	14		4,726	178

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Table 1 The distribution of dermoscopic and clinical images across different population groups.

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