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Research Articles

Sports, science, and partisanship in the United States: chronic traumatic encephalopathy and the polarisation of an apolitical issue

, &
Pages 133-152 | Received 18 Nov 2017, Accepted 10 Sep 2018, Published online: 29 Oct 2018

Figures & data

Table 1. Frequency distributions of various measures of attitudes about concussions and sports.

Table 2. Measurement and Descriptive Statistics of Independent Variables Used in Models.

Figure 1. Party ID X knowledge interaction, ‘Concussions are a major problem’.

Note: Predicted probability calculations derived from , Model 1. Question wording – ‘Generally speaking, how big of a problem to you think that concussions or head injuries are in sports?’
Figure 1. Party ID X knowledge interaction, ‘Concussions are a major problem’.

Figure 2. Party ID X knowledge interaction, ‘CTE is a public health issue’.

Note: Predicted probability calculations derived from , Model 2. Question wording – ‘Repeated brain trauma that results in Chronic Traumatic Encephalopathy (CTE) is a serious public health issue’
Figure 2. Party ID X knowledge interaction, ‘CTE is a public health issue’.

Figure 3. Party ID X knowledge interaction, ‘Settled science’.

Note: Predicted probability calculations derived from , Model 3. Question Wording – ‘There is a settled science that playing [American] football causes brain injuries,’ or ‘There is a settled science that playing [American] football can cause a progressive degenerative brain disease called Chronic Traumatic Encephalopathy or “CTE.”’
Figure 3. Party ID X knowledge interaction, ‘Settled science’.

Figure 4. Party ID X knowledge interaction, ‘Disapprove of children playing tackle football’.

Note: Predicted probability calculations derived from , Model 4. Question Wording – ‘Which of the following sports do you personally approve of children (under 18) participating in? [American] Tackle Football.’
Figure 4. Party ID X knowledge interaction, ‘Disapprove of children playing tackle football’.

Figure 5. Party ID X knowledge interaction, ‘Tackle football is safe before high school’.

Note: Predicted probability calculations derived from , Model 5. Question wording – ‘[American] Tackle football is a safe activity for children before they reach high school.’
Figure 5. Party ID X knowledge interaction, ‘Tackle football is safe before high school’.

Figure 6. Party ID X knowledge interaction, ‘American tackle football is safe during high school’.

Notes: Predicted probability calculations derived from , Model 6. Question wording – ‘ [American] Tackle football is a safe activity for children during high school.’
Figure 6. Party ID X knowledge interaction, ‘American tackle football is safe during high school’.

Figure 7. Effect of climate change attitudes on concussion/CTE attitudes.

Note: Predicted probabilities are calculated from each of the respective models in & .
Figure 7. Effect of climate change attitudes on concussion/CTE attitudes.

Table A1. Modelling attitudes towards concussions and head injuries in sports.

Table A2. Model concern about children participating in American football.

Table A3. Modelling attitudes towards concussions/head injuries (climate change added).

Table A4. Model concern about children participating in American football (climate change added).