Pendant la période de dépendance, où la consommation se situe au centre de la vie et où l'individu s'expose beaucoup plus largement aux conséquences de la consommation, on remarque que les hommes vont davantage consommer différentes drogues alors que les femmes vont surtout faire l'usage d'une drogue principale.
When a person becomes a drug addict, taking drugs becomes the centre of their lives and these people are more greatly exposed to the repercussions of their habit. During this period, we found that men are more likely to take different types of drugs, whereas women will tend to stick to one main drug type.