Effects of state helmet laws on bicycle helmet use by children and adolescents

G B Rodgers

doi:10.1136/ip.8.1.42

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Original Article

Effects of state helmet laws on bicycle helmet use by children and adolescents

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Online download statistics by month: April 2002 to March 2024

	Abstract	Full	Pdf
Apr 2002	19	46	19
May 2002	26	58	28
Jun 2002	22	50	19
Jul 2002	4	15	5
Aug 2002	7	20	11
Sep 2002	14	34	53
Oct 2002	11	38	57
Nov 2002	11	20	39
Dec 2002	6	21	73
Jan 2003	6	26	38
Feb 2003	11	31	45
Mar 2003	13	30	52
Apr 2003	11	25	64
May 2003	7	17	33
Jun 2003	8	27	51
Jul 2003	26	35	71
Aug 2003	58	59	129
Sep 2003	26	40	117
Oct 2003	37	45	156
Nov 2003	41	41	62
Dec 2003	23	24	57
Jan 2004	21	164	54
Feb 2004	36	98	48
Mar 2004	36	37	66
Apr 2004	49	47	71
May 2004	58	47	68
Jun 2004	55	70	87
Jul 2004	45	49	52
Aug 2004	53	43	35
Sep 2004	36	58	66
Oct 2004	71	95	69
Nov 2004	31	65	65
Dec 2004	31	70	51
Jan 2005	35	35	50
Feb 2005	29	66	46
Mar 2005	38	66	41
Apr 2005	11	37	46
May 2005	14	52	24
Jun 2005	11	58	29
Jul 2005	17	38	28
Aug 2005	21	40	26
Sep 2005	14	40	59
Oct 2005	26	52	73
Nov 2005	19	53	69
Dec 2005	15	32	35
Jan 2006	12	32	41
Feb 2006	15	46	72
Mar 2006	11	59	73
Apr 2006	12	78	62
May 2006	42	79	24
Jun 2006	26	76	41
Jul 2006	15	70	33
Aug 2006	33	50	23
Sep 2006	37	60	22
Oct 2006	37	48	38
Nov 2006	64	44	47
Dec 2006	24	28	29
Jan 2007	36	29	28
Feb 2007	37	28	28
Mar 2007	40	44	31
Apr 2007	286	10	7
May 2007	50	2	6
Jun 2007	54	9	9
Jul 2007	38	8	13
Aug 2007	31	2	6
Sep 2007	31	2	4
Oct 2007	35	6	5
Nov 2007	30	9	11
Dec 2007	15	2	1
Jan 2008	22	4	8
Feb 2008	28	2	4
Mar 2008	33	3	8
Apr 2008	27	8	8
May 2008	32	6	7
Jun 2008	27	4	5
Jul 2008	38	4	2
Aug 2008	27	5	3
Sep 2008	29	7	6
Oct 2008	35	4	4
Nov 2008	33	6	3
Dec 2008	20	3	6
Jan 2009	24	8	21
Feb 2009	38	4	7
Mar 2009	40	11	8
Apr 2009	38	6	7
May 2009	40	4	8
Jun 2009	13	4	3
Jul 2009	28	2	6
Aug 2009	32	2	6
Sep 2009	33	7	7
Oct 2009	23	5	3
Nov 2009	20	5	4
Dec 2009	11	2	4
Jan 2010	23	6	5
Feb 2010	13	2	3
Mar 2010	27	3	4
Apr 2010	32	9	7
May 2010	27	6	1
Jun 2010	22	5	11
Jul 2010	28	3	9
Aug 2010	12	4	7
Sep 2010	18	3	4
Oct 2010	39	13	9
Nov 2010	29	4	4
Dec 2010	24	3	0
Jan 2011	11	3	4
Feb 2011	22	1	3
Mar 2011	22	5	11
Apr 2011	32	7	9
May 2011	15	1	2
Jun 2011	23	0	4
Jul 2011	28	2	5
Aug 2011	16	0	3
Sep 2011	21	3	4
Oct 2011	13	2	5
Nov 2011	23	3	15
Dec 2011	11	5	5
Jan 2012	17	6	16
Feb 2012	11	15	14
Mar 2012	14	19	34
Apr 2012	15	17	26
May 2012	39	26	42
Jun 2012	27	14	37
Jul 2012	12	7	31
Aug 2012	23	10	24
Sep 2012	38	10	33
Oct 2012	54	14	40
Nov 2012	35	24	62
Dec 2012	30	14	60
Jan 2013	52	11	27
Feb 2013	36	21	44
Mar 2013	30	23	39
Apr 2013	40	18	88
May 2013	17	14	39
Jun 2013	8	8	30
Jul 2013	13	8	27
Aug 2013	16	6	42
Sep 2013	14	7	42
Oct 2013	26	6	54
Nov 2013	21	11	64
Dec 2013	8	8	48
Jan 2014	7	3	40
Feb 2014	16	7	52
Mar 2014	24	10	43
Apr 2014	19	19	61
May 2014	31	35	63
Jun 2014	12	8	21
Jul 2014	9	7	25
Aug 2014	7	13	17
Sep 2014	17	13	30
Oct 2014	21	13	51
Nov 2014	17	12	30
Dec 2014	8	11	13
Jan 2015	5	2	9
Feb 2015	17	9	27
Mar 2015	18	3	27
Apr 2015	25	10	21
May 2015	22	20	25
Jun 2015	14	2	13
Jul 2015	12	7	26
Aug 2015	10	11	19
Sep 2015	40	11	42
Oct 2015	18	10	40
Nov 2015	22	21	17
Dec 2015	16	14	12
Jan 2016	12	135	14
Feb 2016	22	16	24
Mar 2016	6	4	17
Apr 2016	15	2	26
May 2016	13	9	15
Jun 2016	20	2	9
Jul 2016	15	6	34
Aug 2016	14	7	11
Sep 2016	11	3	31
Oct 2016	20	11	90
Nov 2016	14	6	42
Dec 2016	16	4	20
Jan 2017	15	7	26
Feb 2017	13	2	20
Mar 2017	9	14	19
Apr 2017	3	36	38
May 2017	9	19	26
Jun 2017	16	15	29
Jul 2017	21	14	22
Aug 2017	29	13	25
Sep 2017	28	24	28
Oct 2017	50	32	36
Nov 2017	86	68	27
Dec 2017	128	104	43
Jan 2018	136	116	33
Feb 2018	114	95	34
Mar 2018	143	121	68
Apr 2018	87	74	35
May 2018	103	91	14
Jun 2018	71	47	17
Jul 2018	43	41	14
Aug 2018	48	42	8
Sep 2018	58	48	16
Oct 2018	94	90	21
Nov 2018	158	142	21
Dec 2018	118	116	8
Jan 2019	116	105	14
Feb 2019	122	109	34
Mar 2019	74	55	21
Apr 2019	55	33	17
May 2019	45	27	39
Jun 2019	28	17	34
Jul 2019	21	14	32
Aug 2019	20	8	38
Sep 2019	26	15	28
Oct 2019	37	22	19
Nov 2019	41	19	40
Dec 2019	17	15	40
Jan 2020	34	18	24
Feb 2020	63	26	23
Mar 2020	21	13	12
Apr 2020	12	8	15
May 2020	21	17	13
Jun 2020	16	12	73
Jul 2020	23	18	7
Aug 2020	17	13	4
Sep 2020	33	22	34
Oct 2020	51	30	12
Nov 2020	39	22	42
Dec 2020	19	11	42
Jan 2021	34	18	15
Feb 2021	23	9	22
Mar 2021	22	10	15
Apr 2021	24	12	6
May 2021	20	9	13
Jun 2021	5	5	17
Jul 2021	5	5	41
Aug 2021	8	7	26
Sep 2021	56	55	16
Oct 2021	30	17	25
Nov 2021	30	26	32
Dec 2021	25	16	5
Jan 2022	32	24	29
Feb 2022	30	15	10
Mar 2022	25	15	25
Apr 2022	25	17	19
May 2022	35	26	88
Jun 2022	33	27	33
Jul 2022	16	14	7
Aug 2022	65	43	292
Sep 2022	30	22	37
Oct 2022	38	24	22
Nov 2022	29	11	16
Dec 2022	6	3	6
Jan 2023	20	16	9
Feb 2023	93	89	10
Mar 2023	20	6	5
Apr 2023	17	12	16
May 2023	17	9	14
Jun 2023	11	5	8
Jul 2023	21	17	25
Aug 2023	31	13	17
Sep 2023	16	8	9
Oct 2023	12	8	20
Nov 2023	40	22	5
Dec 2023	108	8	1
Jan 2024	156	0	0
Feb 2024	44	1	0
Mar 2024	128	3	1
Total	8484	6604	7635

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