Initial symptoms of nicotine dependence in adolescents

Joseph R DiFranza; Nancy A Rigotti; Ann D McNeill; Judith K Ockene; Judith A Savageau; Dorothy St Cyr; Mardia Coleman

doi:10.1136/tc.9.3.313

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Initial symptoms of nicotine dependence in adolescents

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Online download statistics by month: September 2000 to August 2023

	Abstract	Full	Pdf
Sep 2000	406	815	174
Oct 2000	131	222	31
Nov 2000	85	116	21
Dec 2000	39	48	6
Jan 2001	44	34	8
Feb 2001	45	61	12
Mar 2001	64	76	4
Apr 2001	21	39	5
May 2001	19	34	1
Jun 2001	11	26	7
Jul 2001	18	31	7
Aug 2001	14	38	8
Sep 2001	7	43	3
Oct 2001	15	92	8
Nov 2001	14	94	5
Dec 2001	18	51	4
Jan 2002	13	53	5
Feb 2002	15	34	3
Mar 2002	22	82	12
Apr 2002	8	88	8
May 2002	21	44	8
Jun 2002	11	61	18
Jul 2002	8	44	33
Aug 2002	23	50	23
Sep 2002	18	50	20
Oct 2002	18	28	5
Nov 2002	9	53	17
Dec 2002	8	30	34
Jan 2003	11	62	27
Feb 2003	7	17	10
Mar 2003	7	67	15
Apr 2003	15	44	20
May 2003	14	58	28
Jun 2003	17	25	14
Jul 2003	31	47	15
Aug 2003	51	56	26
Sep 2003	44	152	19
Oct 2003	72	188	4
Nov 2003	59	102	22
Dec 2003	37	68	23
Jan 2004	67	69	34
Feb 2004	48	88	20
Mar 2004	51	101	20
Apr 2004	47	149	17
May 2004	64	146	14
Jun 2004	60	121	23
Jul 2004	63	119	21
Aug 2004	60	93	31
Sep 2004	51	95	40
Oct 2004	41	145	35
Nov 2004	40	156	23
Dec 2004	47	116	25
Jan 2005	42	111	28
Feb 2005	45	85	35
Mar 2005	53	68	27
Apr 2005	23	71	17
May 2005	31	46	33
Jun 2005	16	48	37
Jul 2005	32	43	28
Aug 2005	27	48	26
Sep 2005	32	44	25
Oct 2005	54	74	52
Nov 2005	61	100	44
Dec 2005	78	79	28
Jan 2006	35	84	21
Feb 2006	25	94	19
Mar 2006	33	121	32
Apr 2006	42	69	19
May 2006	65	38	21
Jun 2006	42	42	21
Jul 2006	46	25	19
Aug 2006	64	53	33
Sep 2006	66	46	29
Oct 2006	83	79	38
Nov 2006	97	63	29
Dec 2006	42	42	24
Jan 2007	73	46	37
Feb 2007	39	40	24
Mar 2007	73	60	34
Apr 2007	78	14	16
May 2007	86	23	17
Jun 2007	57	6	6
Jul 2007	75	25	17
Aug 2007	58	12	15
Sep 2007	46	15	10
Oct 2007	78	16	16
Nov 2007	76	15	23
Dec 2007	37	14	15
Jan 2008	73	12	20
Feb 2008	67	15	16
Mar 2008	66	8	14
Apr 2008	92	18	16
May 2008	70	8	9
Jun 2008	65	13	12
Jul 2008	55	2	8
Aug 2008	50	16	13
Sep 2008	40	11	9
Oct 2008	42	9	8
Nov 2008	36	6	4
Dec 2008	37	4	8
Jan 2009	33	11	7
Feb 2009	38	8	17
Mar 2009	95	8	22
Apr 2009	76	2	11
May 2009	62	9	12
Jun 2009	60	11	8
Jul 2009	49	5	9
Aug 2009	54	4	4
Sep 2009	84	6	11
Oct 2009	58	3	6
Nov 2009	57	17	9
Dec 2009	37	6	7
Jan 2010	61	4	12
Feb 2010	48	4	4
Mar 2010	73	20	19
Apr 2010	54	20	10
May 2010	58	15	10
Jun 2010	55	11	13
Jul 2010	38	11	10
Aug 2010	59	16	17
Sep 2010	42	11	9
Oct 2010	72	15	7
Nov 2010	63	10	5
Dec 2010	46	10	5
Jan 2011	38	11	11
Feb 2011	72	9	11
Mar 2011	69	16	14
Apr 2011	83	10	19
May 2011	66	5	8
Jun 2011	49	7	6
Jul 2011	74	8	10
Aug 2011	53	6	10
Sep 2011	102	7	7
Oct 2011	80	6	10
Nov 2011	89	14	8
Dec 2011	64	25	16
Jan 2012	58	26	20
Feb 2012	59	25	20
Mar 2012	75	30	21
Apr 2012	66	33	23
May 2012	109	24	31
Jun 2012	67	20	20
Jul 2012	85	25	32
Aug 2012	106	32	34
Sep 2012	109	67	44
Oct 2012	118	51	51
Nov 2012	107	43	36
Dec 2012	82	41	18
Jan 2013	115	49	23
Feb 2013	123	56	28
Mar 2013	135	103	27
Apr 2013	127	84	30
May 2013	150	377	34
Jun 2013	86	375	25
Jul 2013	58	398	24
Aug 2013	55	423	23
Sep 2013	73	428	20
Oct 2013	75	501	31
Nov 2013	94	515	47
Dec 2013	88	547	43
Jan 2014	55	513	24
Feb 2014	72	455	38
Mar 2014	89	575	54
Apr 2014	116	789	82
May 2014	88	811	51
Jun 2014	99	501	55
Jul 2014	73	188	65
Aug 2014	83	135	63
Sep 2014	72	166	53
Oct 2014	117	149	29
Nov 2014	117	63	25
Dec 2014	125	88	27
Jan 2015	99	82	16
Feb 2015	100	85	26
Mar 2015	117	137	17
Apr 2015	104	203	26
May 2015	138	184	33
Jun 2015	94	210	11
Jul 2015	52	242	9
Aug 2015	67	229	20
Sep 2015	72	230	12
Oct 2015	78	153	12
Nov 2015	97	314	26
Dec 2015	90	378	24
Jan 2016	78	390	24
Feb 2016	93	390	20
Mar 2016	91	423	34
Apr 2016	113	386	22
May 2016	84	325	34
Jun 2016	62	354	14
Jul 2016	49	361	17
Aug 2016	62	342	11
Sep 2016	68	387	18
Oct 2016	137	466	53
Nov 2016	80	405	28
Dec 2016	78	410	11
Jan 2017	86	426	22
Feb 2017	40	359	20
Mar 2017	53	404	21
Apr 2017	59	458	35
May 2017	31	464	25
Jun 2017	85	236	13
Jul 2017	350	328	24
Aug 2017	445	402	26
Sep 2017	343	263	33
Oct 2017	417	341	24
Nov 2017	567	483	33
Dec 2017	412	370	20
Jan 2018	469	405	18
Feb 2018	799	667	32
Mar 2018	735	647	32
Apr 2018	991	882	46
May 2018	806	738	48
Jun 2018	592	550	10
Jul 2018	573	531	24
Aug 2018	536	502	46
Sep 2018	618	574	24
Oct 2018	756	688	41
Nov 2018	1017	955	43
Dec 2018	765	701	33
Jan 2019	687	620	33
Feb 2019	716	642	36
Mar 2019	901	781	50
Apr 2019	822	727	59
May 2019	867	806	34
Jun 2019	553	487	51
Jul 2019	489	466	49
Aug 2019	468	441	38
Sep 2019	576	520	46
Oct 2019	604	502	58
Nov 2019	473	383	44
Dec 2019	427	350	41
Jan 2020	431	369	26
Feb 2020	358	301	38
Mar 2020	315	267	33
Apr 2020	164	116	39
May 2020	154	106	38
Jun 2020	139	102	23
Jul 2020	88	68	23
Aug 2020	139	106	26
Sep 2020	184	109	27
Oct 2020	267	174	47
Nov 2020	258	198	42
Dec 2020	300	211	33
Jan 2021	254	193	41
Feb 2021	259	195	31
Mar 2021	332	211	50
Apr 2021	352	262	61
May 2021	243	214	52
Jun 2021	172	179	26
Jul 2021	231	232	33
Aug 2021	202	208	24
Sep 2021	258	262	39
Oct 2021	499	402	46
Nov 2021	148	82	45
Dec 2021	294	241	26
Jan 2022	510	446	33
Feb 2022	356	280	30
Mar 2022	460	363	61
Apr 2022	402	312	46
May 2022	394	321	117
Jun 2022	404	357	38
Jul 2022	447	398	27
Aug 2022	575	536	28
Sep 2022	651	522	63
Oct 2022	687	590	47
Nov 2022	1024	917	73
Dec 2022	435	343	41
Jan 2023	483	415	41
Feb 2023	515	448	27
Mar 2023	771	650	49
Apr 2023	662	572	37
May 2023	726	599	89
Jun 2023	607	539	39
Jul 2023	777	700	34
Aug 2023	934	893	30
Total	49361	56963	7282

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