TABLE 1.

Measurement of Exposures: Aboriginal Adolescent Health Survey, British Columbia, 2003

Factor	Variable	Measurement
Age	What is your age in years?	Continuous
Cultural knowledge	How much have you learned about culture from your family?	Some or a lot/none
	How much have you learned about culture from your school?	Some or a lot/none
	How much have you learned about culture from your community?	Some or a lot/none
Reserve	Have you ever lived on a reserve?	Ever/never
Community involvement	In the past 12 months, did you help others without pay by helping in your community?	Yes/no
	In the past 12 months, did you help others without pay by helping neighbors or relatives?	Yes/no
School connectedness	7 items, each on 5-point scales, e.g., How much do you feel that your teachers care about you?	Continuous
Peer attitudes toward pregnancy	Would your peers be angry if you were involved in a pregnancy?	Yes/no
Family connectedness	11 items, each on 3-point scales, e.g., How close do you feel to your mother?	Continuous
Sexual abuse	2 items, Have you ever been forced to have sexual intercourse? Have you ever been sexually abused?	Yes (for selecting either)/no
Lifetime substance use	Lifetime frequency of using alcohol, marijuana, cocaine, hallucinogens, mushrooms, inhalants, amphetamines, heroin, an injected illegal drug, steroids without a doctor's permission, prescription pills without a doctor's consent	High/low
Noncondom contraceptive use at the last incident of sexual intercourse	Last time you had sexual intercourse, what method(s) did you or your partner use to prevent pregnancy? Birth control pills, Depo Provera, diaphragm/contraceptive sponge, withdrawal, emergency contraception	Yes (for selecting any in list)/no
Substance use at last incident of sexual intercourse	Did you drink alcohol or use drugs before you had sexual intercourse the last time?	Yes/no