CAPÍTULO I MARCO HISTÓRICO
1.3. Desarrollo histórico de la actividad aduanera a nivel regional
1.3.2. Nomenclatura y arancel centroamericano de importación
In the Netherlands, statistics on drug-related deaths at national level come available from the General Mortality Register (GMR), or Causes of Death Statistics, held by Statis- tics Netherlands (CBS). In this register the causes of death are classified according to the International Classification of Diseases, Injuries and Causes of Death (ICD). The 10th edition of the ICD has been in use since 1996. The register has national coverage, but in standard form only includes deceased residents of the Netherlands who were registered at a municipal register. However, data on drug-related deaths among non-residents are available from an additional database.
The General Mortality Register (GMR) specifically provides data on acute mortality due to drug use, that is poisoning by drugs, or drug 'overdose'. These are the cases in which death is directly related to drugs. The GMR data do not make a distinction between experimental and habitual drug users, and are not suitable for tracing deaths due to rare toxicological substances like various synthetic drugs. Nonetheless, the registered cases can be selected according to the EMCDDA standard definition of acute drug-related death, as reported for the Netherlands in the Standard Tables ST5_2011_NL_01 and ST6_2011_NL_01.
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Overall trend
Figure 6.3.1 shows the number of cases recorded from 1996 up to including 2010. These cases are selected according to the EMCDDA standard selection of ICD-codes. The figure only includes cases from residents that were registered at a municipal register. Among non-residents, an additional 20 cases were registered in 2010 in a separate archive (Kim de Bruin, Statistics Netherlands (CBS), personal communication, 29-08-2011). Between 1996 and 2010, the total number of recorded drug-related deaths among residents fluc- tuated between a minimum of only 94 cases in 2010 and a maximum of 144 cases in 2001. After temporary increases in 2008 and 2009 the number of deaths decreased again in 2010 to the level of 2007.
Of the 94 cases in 2010, a total of 45 cases were coded to unspecified substances, com- pared to 51 cases in the 2009 registration year. Although the specific substances are not known in these cases, a previous inquiry at Statistics Netherlands (CBS) revealed that these cases are mostly related to hard drugs and to polydrug use, and are therefore rightly included in the group of drug-related deaths. From 1996 up to including 2010, the number of unspecified cases ranged from 18 in 1996 to 58 in 2008.
Despite some fluctuations over the years, the total number of drug-related deaths in the Netherlands has remained relatively low. This might be explained by a low number of socially marginalized problem drug users, successful prevention measures among the problem drug users, and protective factors, such as the nationwide availability of metha- done-maintenance treatment, heroin-assisted treatment, and a low rate of injecting drug use.
Opiates and cocaine
Cases of "opiates" and "cocaine" refer to cases in which these substances were explicitly stated as the primary cause of death on the death certificate. Between 1996 and 2001, opiate intoxications were the most common causes of drug-related death recorded among Dutch residents. In this period, the casualty rate fluctuated between 81 and 75 cases. In 2002, the number of opiate deaths decreased and reached about the same lev- el as the number of acute cocaine deaths, which had slowly increased since the late nine- ties. However, since 2003 these trends have diverged again.
Psychostimulants
In 2010, there was only one case that was coded to poisoning by psychostimulants (oth- er than cocaine), compared to just four cases in 2009, two cases in 2008, and only one case in 2007. Whether these fatal intoxications concerned amphetamines, MDMA, or o- ther psychostimulants is not known.
Figure 6.3.1: Number of acute drug-related deaths in the Netherlands according to the EMCDDA selection of ICD-10 codes from 1996 up to including 2010*
*Only residents that were registered at a municipal register in the Netherlands are included. Among non- residents, an additional 20 cases of acute drug-related deaths were registered in 2010. EMCDDA selection of ICD-10 codes: F11-F12, F14, F16, F19; and X42, X41, X62, X61, Y12, Y11 (selected in combination with T40.0- 9 or T43.6). Source: Causes of Death Statistics, Statistics Netherlands (CBS).
Age and gender
The population of problem drug users is ageing, and this trend is reflected in the increas- ing age of drug users that have died from drugs. Figure 6.3.2 shows that the percentage of deceased aged 35 years and above increased from 40% during the period 1991 up to including 1995 to 70% during the period 2006 up to including 2010.
Between 1996 and 2010, the percentage of female cases varied from 15 to 28% per year, without showing a clear trend. In 2010, the proportion of female cases was 26%.
1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 Total 108 108 110 115 131 144 103 104 127 122 112 99 129 139 94 Opiates 81 71 71 63 68 75 37 53 52 60 44 34 52 52 37 Cocaine 10 8 11 12 19 26 34 17 20 23 21 23 22 30 14 Other 17 29 28 40 44 43 32 34 55 39 47 42 55 57 43 0 20 40 60 80 100 120 140 160 1XPEHU
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Figure 6.3.2: Trends in age distribution of cases of acute drug-related deaths in the Netherlands, according to the EMCDDA definition
Source: Causes of Death Statistics, Statistics Netherlands (CBS).
GHB and PMMA
Some specific information is available about deaths related to GHB and PMMA. With re- gard to GHB, the Netherlands Forensic Institute (NFI) has investigated the cases from 2003 up to including 2011 (Lusthof and Bosman, NFI, personal communication 25-08- 2011). From 2003 up to including April 2011, a GHB analysis was performed in 819 fo- rensic autopsy cases at the NFI. Of these cases, 51 (6,2%) were found positive for GHB. However, other drugs were also commonly detected; it was not specified for all cases to what extent GHB contributed to death. In 2010, GHB was positive in 17 out of 258 au- topsy cases; GHB was the primary cause of death in one case, was fatal in combination with other drugs or alcohol in 7 cases, and did not contribute to death in the other 10 cases.These data suggest that GHB may have become a relevant factor in the drug- related deaths.
With regard to PMMA, this substance was identified in one case in November 2010, in 4 cases in March 2011, and in one case in August 2011 (Vogels, Monitor drug- related emergencies, personal communication 27-10-2011). The exact role of PMMA in these deaths was not clear.
Regional level: Amsterdam
The Public Health Service of Amsterdam (GGD Amsterdam) traces drug-related deaths by combining data from the Central Methadone Register, the municipal registrar's office, the municipal coroners, hospital records, and the police. This regional monitor of drug-related deaths is part of the Public Mental Health Care monitor (OGGZ monitor) of Amsterdam (Buster and Van Brussel 2011). The data on the fatal poisonings ('overdoses') from the
1991-1995 1996-2000 2001-2005 2006-2010 >=65 y 3 3 3 6 35-64 y 37 50 62 64 15-34 y 60 47 36 30 0% 20% 40% 60% 80% 100%
Amsterdam coroners also include tourists and drug users that stay illegally in the Nether- lands and are therefore not included in the Population Registry. Figure 6.3.3 gives the number of acute deaths (overdoses) that were found according to this procedure among the drug users in Amsterdam.
Figure 6.3.3: Number of acute deaths (overdoses) among drug users in Amsterdam from 1994 to 2010
Source: Public Health Service of Amsterdam (GGD Amsterdam).
Apart from the absolute number of deaths per year, the Public Health Service of Amster- dam (GGD Amsterdam) also monitors the mortality rates per observed person years. In order to conduct a proper follow-up of drug users, only methadone patients who are like- ly to stay in Amsterdam are included in this monitoring system. Moreover, only those methadone patients are included who have a known address in the city and were born in the Netherlands, Surinam, the Netherlands Antilles, Turkey, or Morocco.
Figure 6.3.4 gives the mortality per 1,000 person years of observation from the period 1985-1988 to the period 2009-2010. Between these periods, the mortality per 1,000 person years increased from 9.4 to 22.8. However, it should be accounted for that the methadone patients are an ageing population. The baseline mortality, that is the mortality not related to drugs, increased in this ageing population from 1.2 to 4.5, and the standardized mortality ratio (SMR) actually decreased from 7.9 to 5.1 (Buster and Van Brussel 2011). 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 Overdose 39 26 26 22 25 27 31 32 29 21 22 29 21 25 22 29 27 0 5 10 15 20 25 30 35 40 45 1XPEHU
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Figure 6.3.4: Mortality per 1,000 person years among Amsterdam methadone patients from 1985-1988 to 2009-2010
The baseline mortality indicates the mortality among the Amsterdam population of the same age as the metha- done patients. Source: Public Health Service of Amsterdam (GGD Amsterdam).
Validation research
The Forensic Medicine Department of the Municipal Public Health Service of Amsterdam has investigated whether urine screening "provided new insights into the circumstances of death" (Ceelen et al. 2011). For this validation research, "post-mortem urine screening was performed in adult decedents that were examined in Amsterdam by the forensic physicians between April 2008 and April 2009". To collect the data, a "rapid on-site mul- tidrug test was used to screen the urine samples for the presence of the following com- monly used drugs classes: amphetamine, barbiturates, benzodiazepines, cannabis, co- caine, 3,4-Methylenedioxymethamphetamine (MDMA), methadone, methamphetamine, morphine and tricyclic antidepressants (TCA)". A total of 200 death cases were included in the study and in 113 cases attempts were successful to collect the post-mortem urine samples. The most frequently detected drugs were benzodiazepines (37 times), cannabis (18 times), morphine (16 times), cocaine (13 times), and methadone (12 times). The researchers conclude that the "majority of the cases with indications for recent use or abuse of drugs were strengthened by toxicology screening". On the other hand, the re- searchers also found that "urine of 7 out of 89 cases without indications in scene of death