Should research samples reflect the diversity of the population?

P Allmark

doi:10.1136/jme.2003.004374

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Research ethics

Should research samples reflect the diversity of the population?

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Online download statistics by month: April 2004 to November 2024

	Abstract	Full	Pdf
Apr 2004	43	59	26
May 2004	58	88	24
Jun 2004	65	77	11
Jul 2004	61	76	12
Aug 2004	48	104	12
Sep 2004	57	105	5
Oct 2004	53	97	13
Nov 2004	34	52	16
Dec 2004	67	84	10
Jan 2005	40	74	7
Feb 2005	54	85	23
Mar 2005	34	58	7
Apr 2005	14	47	20
May 2005	13	45	20
Jun 2005	36	17	10
Jul 2005	12	29	20
Aug 2005	19	25	22
Sep 2005	16	30	27
Oct 2005	35	47	27
Nov 2005	26	37	15
Dec 2005	28	32	20
Jan 2006	26	34	24
Feb 2006	24	27	20
Mar 2006	26	48	36
Apr 2006	13	27	11
May 2006	28	28	18
Jun 2006	32	31	21
Jul 2006	5	23	6
Aug 2006	17	15	15
Sep 2006	38	53	36
Oct 2006	13	23	16
Nov 2006	22	29	20
Dec 2006	11	17	15
Jan 2007	16	29	29
Feb 2007	11	26	10
Mar 2007	11	28	21
Apr 2007	31	14	12
May 2007	18	10	9
Jun 2007	21	6	5
Jul 2007	16	6	8
Aug 2007	26	5	11
Sep 2007	12	2	2
Oct 2007	26	4	8
Nov 2007	18	6	7
Dec 2007	12	8	8
Jan 2008	13	6	23
Feb 2008	16	8	9
Mar 2008	19	12	8
Apr 2008	25	8	16
May 2008	25	6	8
Jun 2008	20	4	6
Jul 2008	18	2	0
Aug 2008	33	5	5
Sep 2008	24	5	3
Oct 2008	29	5	5
Nov 2008	23	10	3
Dec 2008	17	5	5
Jan 2009	18	0	5
Feb 2009	21	2	10
Mar 2009	27	7	14
Apr 2009	34	11	12
May 2009	15	6	5
Jun 2009	8	4	3
Jul 2009	17	7	3
Aug 2009	16	3	6
Sep 2009	15	2	2
Oct 2009	29	4	8
Nov 2009	11	5	6
Dec 2009	10	7	1
Jan 2010	11	5	4
Feb 2010	8	1	3
Mar 2010	9	1	5
Apr 2010	10	6	3
May 2010	25	4	5
Jun 2010	12	3	10
Jul 2010	40	6	2
Aug 2010	6	4	4
Sep 2010	48	7	4
Oct 2010	28	4	2
Nov 2010	42	4	6
Dec 2010	22	5	4
Jan 2011	48	9	17
Feb 2011	27	8	3
Mar 2011	42	11	6
Apr 2011	15	6	5
May 2011	47	1	4
Jun 2011	17	1	1
Jul 2011	51	2	0
Aug 2011	28	1	1
Sep 2011	44	1	1
Oct 2011	27	0	3
Nov 2011	53	18	2
Dec 2011	12	26	3
Jan 2012	20	49	8
Feb 2012	13	24	8
Mar 2012	21	45	6
Apr 2012	23	52	6
May 2012	36	111	14
Jun 2012	26	60	8
Jul 2012	37	101	8
Aug 2012	19	68	15
Sep 2012	27	105	20
Oct 2012	33	149	14
Nov 2012	45	123	10
Dec 2012	26	133	12
Jan 2013	67	157	30
Feb 2013	60	177	16
Mar 2013	29	140	12
Apr 2013	27	236	5
May 2013	33	218	14
Jun 2013	23	169	27
Jul 2013	15	129	11
Aug 2013	18	118	8
Sep 2013	15	158	8
Oct 2013	14	186	10
Nov 2013	19	242	9
Dec 2013	12	231	7
Jan 2014	27	183	28
Feb 2014	20	134	9
Mar 2014	33	195	9
Apr 2014	19	209	17
May 2014	15	174	8
Jun 2014	14	123	12
Jul 2014	29	77	3
Aug 2014	21	117	3
Sep 2014	20	176	10
Oct 2014	38	181	22
Nov 2014	29	161	6
Dec 2014	21	164	10
Jan 2015	38	163	25
Feb 2015	15	141	14
Mar 2015	31	201	11
Apr 2015	18	235	12
May 2015	21	173	11
Jun 2015	29	148	12
Jul 2015	11	166	7
Aug 2015	19	180	7
Sep 2015	20	150	5
Oct 2015	11	126	8
Nov 2015	17	185	22
Dec 2015	26	118	7
Jan 2016	20	136	6
Feb 2016	18	174	20
Mar 2016	54	213	18
Apr 2016	20	265	24
May 2016	26	306	15
Jun 2016	25	204	11
Jul 2016	12	199	15
Aug 2016	22	200	10
Sep 2016	24	297	13
Oct 2016	30	403	28
Nov 2016	17	447	25
Dec 2016	13	393	34
Jan 2017	28	384	22
Feb 2017	11	170	37
Mar 2017	9	335	73
Apr 2017	8	870	78
May 2017	7	717	60
Jun 2017	88	443	69
Jul 2017	84	76	14
Aug 2017	58	51	5
Sep 2017	399	387	16
Oct 2017	602	597	31
Nov 2017	634	623	32
Dec 2017	519	507	32
Jan 2018	526	519	57
Feb 2018	587	566	51
Mar 2018	814	806	80
Apr 2018	929	929	57
May 2018	792	792	80
Jun 2018	479	481	35
Jul 2018	441	441	44
Aug 2018	379	377	38
Sep 2018	529	529	29
Oct 2018	901	901	46
Nov 2018	845	845	54
Dec 2018	657	657	46
Jan 2019	605	605	37
Feb 2019	685	682	66
Mar 2019	713	684	71
Apr 2019	769	743	90
May 2019	591	567	77
Jun 2019	417	396	33
Jul 2019	499	475	62
Aug 2019	427	415	42
Sep 2019	484	470	38
Oct 2019	723	711	82
Nov 2019	756	745	75
Dec 2019	654	628	49
Jan 2020	630	609	69
Feb 2020	780	761	80
Mar 2020	746	721	82
Apr 2020	797	761	74
May 2020	828	796	118
Jun 2020	941	917	64
Jul 2020	942	898	61
Aug 2020	904	875	54
Sep 2020	924	902	60
Oct 2020	1321	1281	95
Nov 2020	1252	1231	101
Dec 2020	990	965	83
Jan 2021	1032	972	124
Feb 2021	1059	1023	76
Mar 2021	866	800	40
Apr 2021	823	754	53
May 2021	556	526	47
Jun 2021	264	264	33
Jul 2021	191	189	43
Aug 2021	428	433	77
Sep 2021	781	785	93
Oct 2021	967	920	157
Nov 2021	522	444	118
Dec 2021	679	636	101
Jan 2022	605	556	105
Feb 2022	742	672	89
Mar 2022	1082	1024	145
Apr 2022	1122	1073	166
May 2022	1099	1028	160
Jun 2022	856	807	75
Jul 2022	864	799	75
Aug 2022	877	840	87
Sep 2022	911	856	77
Oct 2022	1098	1032	100
Nov 2022	1070	977	118
Dec 2022	853	749	94
Jan 2023	906	820	103
Feb 2023	1058	982	83
Mar 2023	1410	1311	125
Apr 2023	1465	1343	188
May 2023	1596	1452	122
Jun 2023	1308	1237	96
Jul 2023	1286	1248	74
Aug 2023	1178	1109	83
Sep 2023	1128	1071	98
Oct 2023	1365	1229	99
Nov 2023	1548	1401	104
Dec 2023	1767	210	26
Jan 2024	651	24	10
Feb 2024	828	23	18
Mar 2024	1289	53	22
Apr 2024	1343	32	54
May 2024	1717	21	22
Jun 2024	1212	23	13
Jul 2024	590	21	9
Aug 2024	629	13	9
Sep 2024	743	10	8
Oct 2024	734	7	21
Nov 2024	532	14	18
Total	78256	74987	8169

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