Index of tables and figures |
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13 | |
Acknowledgements |
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25 | |
Chapter 1 Introduction and background |
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27 | |
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27 | |
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1.2. The taming of cocaine: a summary of the original study |
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27 | |
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1.3. Theoretical perspectives on longitudinal studies |
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31 | |
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31 | |
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1.3.2. Advantages and drawbacks of follow-up research |
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32 | |
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1.4. Longitudinal drug research: an overview |
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33 | |
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1.4.1. A survey of 235 follow-up drug studies |
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33 | |
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1.4.2. Comparable follow-up cocaine studies |
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46 | |
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49 | |
Chapter 2 Methodological design |
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53 | |
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53 | |
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2.2. Methodology of the original study |
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53 | |
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2.3. Methodology of the present study |
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55 | |
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2.3.1. Stage 1: reconstructing the original snowball chains |
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56 | |
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2.3.2. Stage 2: further strategies |
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57 | |
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2.4. Instrument and data collection |
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59 | |
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60 | |
Chapter 3 The follow-up sample compared with the non-follow-up sample (1997) |
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63 | |
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63 | |
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3.2. Searching for correlations between variables |
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64 | |
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3.2.1. Variables concerning cocaine use |
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64 | |
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64 | |
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3.2.1.2. Level of use in three different periods |
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65 | |
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3.2.1.3. Patterns of cocaine use |
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66 | |
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3.2.1.4. Craving and obsession |
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67 | |
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3.2.1.5. Registered as users |
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68 | |
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3.2.2. Variables concerning the use of other drugs |
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69 | |
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3.2.2.1. Lifetime prevalence of other drugs |
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69 | |
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3.2.2.2. Combining cocaine with other drugs |
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70 | |
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3.2.3. Social, economic and educational variables |
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70 | |
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70 | |
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71 | |
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3.2.3.4. Living situation |
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72 | |
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3.2.3.5. Country of birth |
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73 | |
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3.2.3.6. Work status at the time of the first interview |
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73 | |
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3.3. Logistic regression: predicting follow-up response |
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76 | |
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Chapter 4 General characteristics of the sample |
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83 | |
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4.2. Age, gender and nationality |
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4.3. Education, occupation and income |
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86 | |
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4.4. Marital status, living situation, and parenthood |
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87 | |
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4.4.1. Marital status and living situation |
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87 | |
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4.6. Registered versus non-registered respondents |
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4.6.1. Treatment contacts |
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4.6.2. Convictions for felonies |
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92 | |
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4.6.3. Registered versus non-registered respondents |
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94 | |
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4.7. Networks of cocaine users |
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96 | |
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4.8. Characteristics of the 'ex-cocaine users' |
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4.8.1. Demographic variables |
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98 | |
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4.9. Characteristics of the 'heavy' users |
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99 | |
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4.9.1. Demographic variables |
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99 | |
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100 | |
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101 | |
Chapter 5 Levels of use over time |
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103 | |
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103 | |
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5.2. Average cocaine dosage over time |
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103 | |
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5.2.1. Operationalising dosage |
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103 | |
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5.2.2. Development of average cocaine dosage over time |
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106 | |
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5.3. Frequency of ingestion |
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109 | |
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5.3.1. Frequency of ingestion in four periods |
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109 | |
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110 | |
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5.4.2. Levels of cocaine use over time |
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111 | |
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5.4.3. Levels of use and length of cocaine career |
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114 | |
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114 | |
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5.6. Partitioning of the week |
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116 | |
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5.7. Speed of use on a typical occasion |
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116 | |
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117 | |
Chapter 6 Routes of ingestion |
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6.2. Prevalence of different routes of ingestion |
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6.2.1. Lifetime prevalence |
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6.2.2. Last month prevalence |
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121 | |
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6.3. Routes of ingestion in two periods of use |
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6.4. Advantages and disadvantages of various routes of ingestion |
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123 | |
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6.4.1. Advantages and disadvantages of snorting |
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6.4.2. Advantages and disadvantages of injecting |
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6.4.3. Advantages and disadvantages of freebasing |
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129 | |
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131 | |
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6.6. Transition between routes |
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131 | |
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6.6.1. Transitions from the first year of regular use to the period of heaviest use |
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132 | |
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6.6.2. Transition from the period of heaviest use to the last year prior to the 2003 interview |
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132 | |
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6.6.3. Transition from the last year prior to the 2003 interview to the last three months prior to the 2003 interview |
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134 | |
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134 | |
Chapter 7 Crack and freebase |
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137 | |
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7.2. User's perceptions of crack and freebasing |
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137 | |
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138 | |
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139 | |
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7.3. Experiences with freebase cocaine |
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140 | |
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7.3.1. Lifetime prevalence before and after 1997 |
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140 | |
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7.3.2. Last month prevalence in 1997 and in 2003 |
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141 | |
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7.4. Preparing and using freebase cocaine |
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141 | |
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141 | |
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142 | |
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143 | |
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144 | |
Chapter 8 The combination of cocaine with other drugs |
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147 | |
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8.2. Experiences with other drugs |
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147 | |
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8.2.1. Lifetime prevalence |
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147 | |
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8.2.2. Last two weeks prevalence |
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149 | |
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8.3. Combining cocaine with other drugs |
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151 | |
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8.3.1. Frequency of combining cocaine with other drugs |
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151 | |
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8.3.2. Advantages and disadvantages of combining cocaine with other drugs |
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151 | |
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8.4. Level of use and poly drug use |
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156 | |
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157 | |
Chapter 9 Buying cocaine |
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159 | |
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159 | |
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159 | |
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9.2.1. Last month prices and amount of money spent on cocaine |
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159 | |
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9.2.2. Influences of the price on consumption |
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161 | |
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9.3. Sources and location of purchase |
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161 | |
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9.4. Unorthodox and illegal activities for obtaining cocaine |
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163 | |
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165 | |
Chapter 10 Quality of cocaine |
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167 | |
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167 | |
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167 | |
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10.3. Amphetamine ('speed') in cocaine |
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171 | |
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174 | |
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10.5. Quality control by respondents |
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177 | |
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10.6. Select group of respondents |
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180 | |
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181 | |
Chapter 11 Advantages, disadvantages and (adverse) effects of cocaine |
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183 | |
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183 | |
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11.2. Advantages and disadvantages of cocaine |
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183 | |
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11.2.1. Users' perceptions of advantages of cocaine |
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183 | |
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11.2.2. Users' perceptions of disadvantages of cocaine |
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187 | |
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11.3. (Adverse) effects of cocaine |
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193 | |
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201 | |
Chapter 12 Abstaining, cutting back and quitting |
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203 | |
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203 | |
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12.2. Temporary abstinence |
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203 | |
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12.2.1. Periods of abstinence |
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203 | |
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12.2.2. Reasons for abstaining |
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205 | |
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12.3. Cutting back on cocaine use |
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208 | |
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12.4. Problems with abstaining or cutting back |
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210 | |
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211 | |
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12.6. Techniques for quitting |
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212 | |
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12.7. Life events affecting cocaine consumption |
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213 | |
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214 | |
Chapter 13 Craving |
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217 | |
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217 | |
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13.2. Subjective measurements of desire for the drug |
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217 | |
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13.3. Extra sources of income to spend on cocaine |
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220 | |
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222 | |
Chapter 14 Rituals and rules for cocaine use |
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225 | |
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225 | |
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14.2. Rules for controlling cocaine use |
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225 | |
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14.3. Advice to novice users |
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228 | |
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14.4. Emotional states in which cocaine use occurs |
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233 | |
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14.5. Situations for cocaine use |
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235 | |
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14.6. Persons in whose company cocaine is not used |
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238 | |
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14.7. Financial limits to cocaine purchases |
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239 | |
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14.8. The influence of set and setting factors on (dis-)respect for rules |
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240 | |
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14.8.1. Interfering set and setting factors |
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241 | |
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14.8.2. Supporting set and setting factors |
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242 | |
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243 | |
Chapter 15 Social context and informal social control |
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245 | |
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245 | |
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15.2. Offering cocaine and dissuading from using |
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245 | |
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245 | |
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15.2.2. Dissuading from using cocaine |
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247 | |
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15.3. Influences of cocaine on the social environment |
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249 | |
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15.4. Informal social control among friends |
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251 | |
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15.4.1. Talking about cocaine |
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251 | |
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15.4.2. Respondents' remarks to friends |
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253 | |
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15.4.3. Friends' remarks to respondents |
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254 | |
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15.4.4. Effectiveness of informal social controls |
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255 | |
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258 | |
Chapter 16 Views of cocaine and drug policy |
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261 | |
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261 | |
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16.2. Information about cocaine |
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261 | |
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16.2.1. Views of cocaine before initiation |
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261 | |
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16.2.2. Views of cocaine after initiation |
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263 | |
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16.2.3. Views of cocaine after quitting |
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265 | |
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16.2.4. False information |
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265 | |
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267 | |
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16.3.1. Preferred cocaine policy among cocaine users |
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267 | |
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16.3.2. Other drug policy studies |
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271 | |
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272 | |
Chapter 17 Test-retest of the follow-up respondents |
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275 | |
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275 | |
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17.2. Initiation into cocaine use |
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275 | |
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17.2.1. Age at initiation |
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276 | |
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17.2.2. Initiation company |
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277 | |
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17.2.3. Location of the first cocaine use |
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278 | |
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17.2.4. First route of ingestion |
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279 | |
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17.2.5. Ways of obtaining the first cocaine |
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279 | |
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17.3. Lifetime prevalence of drug use |
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280 | |
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17.3.1. Deliberately denying drug use |
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281 | |
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17.3.2. Forgetting about drug use |
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281 | |
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17.3.3. Obscure definitions |
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283 | |
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283 | |
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284 | |
Chapter 18 Summary and conclusions |
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287 | |
References |
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305 | |
Annexe I Questionnaire (long and short version) |
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309 | |
Annexe II 235 Follow-up studies |
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359 | |