Background:
Marijuana is mostly used illegal drug among pupils. The interconnection of cigarette smoking and marijuana smoking in population of Croatian pupils in 2022 will be presented.

Methods:
We analyze the data of HBSC research conducted in 2022 among pupils in Croatia. Sample included 705 boys in the age of 15 and 840 girls in the age of 15. Person Chi-Square was used.

Results:
12,1% of boys and 12,9% of girls tried marijuana at least once in lifetime. 2,5% of boys and 0,7% of girls smoked marijuana already at age 11 or younger, 1,6% of boys and 0,7% of girls at age 12, 1,7% of boy and 2,3% of girls at age 13, 2,8% boys and 3,9% girls at age 14, 3,4% boys and 5,3% at age 15. In the last 30 days 25,5 % of boys and 28,7% girls smoked cigarettes at least once. Among boys who never tried marijuana, 16,8% smoked cigarettes at least once in last 30 days, while among boys who tried marijuana, 77,5% smoked cigarettes at least once in last 30 days (p<0,001). Among girls who never tried marijuana, 19,3% smoked cigarettes at least once in last 30 days, while among girls who tried marijuana, 87,7% smoked cigarettes at least once in last 30 days (p<0,001). Among boys who never smoked marijuana, even 82,8% never smoked cigarettes; among boys who smoked marijuana at age 11 or younger, only 25,0% never smoked cigarettes; among boys who smoked marijuana at age 12-15, 16,7-33,3% never smoked cigarettes (p<0,001). Among girls who never smoked marijuana, even 80,6% never smoked cigarettes; among girls who smoked marijuana at age 11 or younger, only 33,3% never smoked cigarettes; among girls who smoked marijuana at age 12-15, 6,7-21,1% never smoked cigarettes (p<0,001).

Conclusion:
For the first time since 2002 (first time in 6 survey waives) in 2022 girls smoke marijuana more frequently than boys. Cigarette smoking is associated with life time marijuana smoking and early onset of marijuana smoking.