Question | Response choices | Complete observations | Pearson’s r or agreement |

Which of the following categories best captures the amount of marijuana you smoked over the past 30 days? | An eighth of an ounce (which is the same as 3.5 g) | 92 | Pearson’s r=0.83 |

A quarter of an ounce (which is the same as 7 g) | |||

A half of an ounce (which is the same as 14 g) | |||

Three quarters of an ounce (which is the same as 21 g) | |||

An ounce (which is the same as 28 g) | |||

Grams | |||

Ounces | |||

Hits | |||

Other | |||

Refused | |||

Don’t know | |||

In the last 30 days have you smoked a … | Joint | 97 | Agreement=77.3% |

Pipe | |||

Bong | |||

Blunt | |||

Spliff | |||

In the last 30 days, how many days per week did you smoke a joint? | Every day | 53 | Pearson’s r=0.63 |

6 days/week | |||

5 days/week | |||

4 days/week | |||

3 days/week | |||

2 days/week | |||

1 days/week | |||

Days/month | |||

Refused | |||

Don’t know | |||

On those days, how many joints did you smoke? | ___ Number of joints | 53 | Pearson’s r=0.92 |

Less than one joint | |||

Refused | |||

Don’t know | |||

In the last 30 days, how many days per week did you smoke a pipe? | Every day | 55 | Pearson’s r=0.77 |

6 days/week | |||

5 days/week | |||

4 days/week | |||

3 days/week | |||

2 days/week | |||

1 days/week | |||

Days/month | |||

Refused | |||

Don’t know | |||

On those days, how many pipes did you smoke? | ___ Number of pipes | 51 | Pearson’s r=0.63 |

Less than one pipe | |||

Refused | |||

Don’t know | |||

In the last 30 days, how many days per week did you smoke a bong? | Every day | 9 | Pearson’s r=0.76 |

6 days/week | |||

5 days/week | |||

4 days/week | |||

3 days/week | |||

2 days/week | |||

1 days/week | |||

Days/month | |||

Refused | |||

Don’t know | |||

On those days, how many bongs did you smoke? | ___ Number of bongs | 9 | Pearson’s r=0.85 |

Less than one bong | |||

Refused | |||

Don’t know | |||

Number of days marijuana was smoked in past 30 days* | Pearson’s r=0.78* | ||

Total number of joints/pipes/bongs used in past 30 days* | Pearson’s r=0.89* |

*Calculated based on previous questions.