“With the cannabis industry finding its stride in Massachusetts, the lack of accessible, evidence-based information is a major roadblock in standardizing procedures for health and safety both at the state and national level,” Dr. Marion McNabb, public health doctor and CEO of C3RN, said in a statement last week.

Presentations of survey results so far will be made at INSA Springfield at 506 Cottage St. here at a time to be determined. Organizers made changes from the original date of Aug. 15. Original plans also called for a presentation at INSA Easthampton but the event will be held only at the Springfield location, she said Tuesday.