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| Meaning units | Condensed meaning units | Codes | Categories | Themes |
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| I was never sleepy in the daytime before my PD diagnosis (Participant 4) | Never sleepy before PD | Disease | Related to the disease | Not an isolated phenomenon |
| [Daytime sleepiness] comes, but it depends on how much I slept at night, so how prepared I am to take that sleepiness can be different (Participant 12) | Quality of nighttime sleep is essential | Sleep quality | Related to internal factors |
| But there is a difference (drive car/boat) because I drive a boat a lot. I never get tired then [....] I have never had this kind of problem when I have driven a boat (Participant 3) | The enjoyability of situation can play a role | Situational | Related to external factors |
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| I have to move when I get sleepy [....] I could run around for hours doing things. And that feels good (Participant 4) | Fight against sleepiness with physical activity | Activity | Coping strategies | Something to struggle against or accept |
| Yeah, it actually sucks to fall asleep whenever. It’s uncomfortable [....] I think it’s uncomfortable, [....] I don’t take it as something negative, so it’s a conflict for me (Participant 3) | Conflicting thoughts about daytime sleepiness | Conflict ignore | Attitude |
| Take a nap to refresh and restart my body and brain (Participant 12) | Restart body and brain | Power | Coping strategies |
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| I can’t take it […] this isn’t me (Participant 1) | This isn’t me | Self-image | Personality change | Something beyond sleepiness |
| Yes, losing focus—that’s at the root of all of it. The sleepiness gets worse then. Lose the thread, and it’s hard to find my way back [....] It can be so embarrassing that I prefer to refrain from talking then (Participant 11) | Losing focus is so embarrassing that I prefer to refrain from talking | Shame | Negative feelings |
| I see tiredness as a larger concept that has different facets [....] as being tired and sleepy—sleepy-tired [....] and this tiredness manifests itself as sleepiness (Participant 11) | Sleepiness is a larger concept than only sleepiness | Larger concept | More than sleepiness |
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