Table 2. Negative binomial regression showing rate ratios for factors associated with QoL among primary school children in Riyadh city in 2017/2018, n=808.
QoL: quality of life
| Variable | RR | P-value | [95% conf. interval] |
| Sex | 0.85 | 0.21 | 0.66-1.09 |
| Age | 1.01 | 0.02 | 1.01-1.06 |
| Family Income Group | |||
| 5000-9000 | 1.03 | 0.83 | 0.82-1.29 |
| 10000 or more | 0.98 | 0.87 | 0.77-1.25 |
| Mother Education | |||
| High school | 1.26 | 0.09 | 0.96-1.65 |
| College or more | 1.13 | 0.41 | 0.85-1.50 |
| Father Education | |||
| High school | 0.95 | 0.72 | 0.72-1.25 |
| College or more | 0.99 | 0.95 | 0.74-1.32 |
| Oral hygiene frequency | |||
| once/day, two or more/day | 1.04 | 0.69 | 0.86-1.25 |
| Dental visits within 12 months | |||
| Yes | 1.03 | 0.67 | 0.86-1.25 |
| Untreated caries | 1.04 | 0.02 | 1.01-1.07 |