Table 3. Relationship between sleep quality and participants' demographics and chronic diseases presence (N=651) .
| Variable | Sleep quality | χ2 | p-value | |
| Good N (%) | Poor N (%) | |||
| Age in years, median (IQR) | 34.6 (24) | 25 (21) | 3.36 | 0.001 |
| Gender | ||||
| Female | 238 (68.8) | 235 (77) | 5.57 | 0.018 |
| Male | 108 (31.2) | 70 (23) | ||
| Nationality | ||||
| Non-Saudi | 13 (3.8) | 12 (3.9) | 0.01 | 0.907 |
| Saudi | 333 (96.2) | 293 (96.1) | ||
| Education | ||||
| Primary school | 1 (0.3) | 1 (0.3) | 6.51 | 0.259 |
| Middle school | 0 (0.0) | 3 (1) | ||
| Secondary school | 54 (15.6) | 61 (20) | ||
| Bachelors | 258 (74.6) | 218 (71.5) | ||
| Above Bachelors | 32 (9.2) | 21 (6.9) | ||
| Master | 1 (0.3) | 1 (0.3) | ||
| Employment | ||||
| Government employee | 118 (34.1) | 79 (25.9) | 15.95 | 0.007 |
| None | 46 (13.3) | 37 (12.1) | ||
| Private sector employee | 31 (9) | 22 (7.2) | ||
| Retired | 32 (9.2) | 18 (5.9) | ||
| Self-employed | 7 (2) | 5 (1.6) | ||
| Student | 112 (32.4) | 144 (47.2) | ||
| Monthly income | ||||
| <5000 SR | 141 (40.8) | 153 (50.2) | 7.08 | 0.069 |
| 5000-10000 SR | 66 (19.1) | 56 (18.4) | ||
| 10000-20000 SR | 115 (33.2) | 76 (24.9) | ||
| >20000 SR | 24 (6.9) | 20 (6.6) | ||
| Chronic diseases | ||||
| No | 286 (82.7) | 245 (80.3) | 0.58 | 0.444 |
| Yes | 60 (17.3) | 60 (19.7) | ||