*3.1. Demographics*

We started the study with 219 participants who completed the demographic information. There were 118 participants at baseline and post-training and 70 participants at follow-up. Participants in the MTurk group were significantly older (X = 22 years, ranging from 19 to 24 years) compared to the participants in the Park and Rec group (X = 16 years, ranging from 15 to 19 years). The highest level of education in the MTurk group was a graduate degree and technical school in the Park and Rec group (Table 1). There were a greater number of female participants in the Park and Rec group. The majority of participants were Caucasian. The MTurk group had also been in the workforce longer than the participants in the Park and Rec group (1.9 vs 1.3 years, respectively). Park and Rec workers perceived their health to be better compared to the MTurk participants. The seasonal Park and Rec workers were employed at a single location and participated in regular safety meetings. Whereas, the MTurk workers were employed in a range of workplaces such as retail, food service, construction, health care, public utilities, manufacturing and agriculture with a variety of employers with and without regular safety meetings. Similar to the results in previous studies [5,30], young workers in both groups reported the need for safety training before starting a job: 95% in the MTurk group and 86% in the Park and Rec group.


**Table 1.** Demographic Data.

\*\*\* *p*-Value < 0.0001.
