Table 7. Unadjusted regression analysis for frequency of substance use [RC: At least once per week].

	At Least Once Every Few Weeks	Only Once or Twice
	Relative Risk Ratio [CI] P-Value	Relative Risk Ratio [CI] P-Value
Sex
Female	1 [1.0-1.0]	1 [1.0-1.0]
Male	0.91 [0.568-1.448] 0.68	0.43 [0.279-0.660] <0.001
“My friends really try to help me”
Agree	1 [1.0-1.0]	1 [1.0-1.0]
Disagree	1.36 [0.821-2.255] 0.23	0.66 [0.398-1.100] 0.11
“I can count on my friends when things go wrong”
Agree	1 [1.0-1.0]	1 [1.0-1.0]
Disagree	0.93 [0.498-1.743] 0.83	0.45 [0.226-0.878] 0.02