Table 8.
Prevalence rate ratio (PRR) of poor sleep quality by sociodemographic characteristics for the whole sample (n = 631)
| Sociodemographic Characteristics | Mean PSQI | PRR | Interpretation |
|---|---|---|---|
| Age Group | |||
| 18–21* | 7.96 | 1.00 | Reference group |
| 22–25 | 8.90 | 1.12 | 12% higher prevalence |
| 26–30 | 9.86 | 1.24 | 24% higher prevalence |
| Gender | |||
| Male* | 7.45 | 1.00 | Reference group |
| Female | 8.56 | 1.15 | 15% higher prevalence |
| Living Situation | |||
| With your parents* | 8.16 | 1.00 | Reference group |
| Dormitory with roommates | 7.17 | 0.88 | 12% lower prevalence |
| Dormitory alone | 8.38 | 1.03 | 3% higher prevalence |
| Alone | 10.38 | 1.27 | 27% higher prevalence |
| With a partner | 10.57 | 1.30 | 30% higher prevalence |
| Work Status | |||
| Unemployed* | 8.06 | 1.00 | Reference group |
| Part-time/Casual | 8.16 | 1.01 | 1% higher prevalence |
| Full-time employed | 8.58 | 1.06 | 6% higher prevalence |
| Unable to work (disability) | 9.53 | 1.17 | 17% higher prevalence |
| Education | |||
| Undergraduate* | 8.17 | 1.00 | Reference group |
| Graduate | 8.32 | 1.02 | 2% higher prevalence |
| Post-graduate (PhD) | 8.67 | 1.06 | 6% higher prevalence |
| Income Level | |||
| $60,001–$80,000* | 7.17 | 1.00 | Reference group |
| $10,001–$20,000 | 7.78 | 1.09 | 9% higher prevalence |
| $20,001 - $40,000 | 7.85 | 1.09 | 9% higher prevalence |
| More than $80,000 | 8.63 | 1.20 | 20% higher prevalence |
| Up to $10,000 | 9.18 | 1.28 | 28% higher prevalence |
| $40,001 - $60,000 | 9.25 | 1.29 | 29% higher prevalence |
*: Reference Group