| BMI | Body Mass Index |
| CI | Confidence Interval |
| HHS | Helsinki Health Study |
| HR | Hazard Ratio |
| JSQ | The Jenkins Sleep Questionnaire |
| LC1 | Latent Class 1 (Reference group) |
| LC2 | Latent Class 2 (Persistent sleep problems) |
| LC3 | Latent Class 3 (Poor health functioning) |
| LC4 | Latent Class 4 (Problematic sleep and health functioning) |
| MET | Metabolic equivalents |
| RMLCA | Repeated Measures Latent Class Analysis |
| SD | Standard Deviation |
| SF-36 | Short-Form 36 General Health Questionnaire |
| BP | Bodily pain subscale |
| GH | General health perceptions |
| GMH | General Mental Health subscale |
| SF | Social Functioning subscale |
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