Fully adjusted ORs for the predictors of missed hospital appointment for all clinics combined (except Obstetrics and Gynaecology and Paediatric clinics)
| Model | Model (1) N=4 72 882 | *Model (2) N=4 72 882 |
| Predictors | †Fully adjusted OR (95% CI) | †Fully adjusted OR (95% CI) |
| Sex | ||
| Female | Reference | Reference |
| Male | 1.08 (1.06 to 1.10) | 1.08 (1.06 to 1.09) |
| Age category | ||
| 19–30 years old | 1.15 (1.13 to 1.18) | 1.14 (1.12 to 1.17) |
| 31–40 years old | Reference | Reference |
| 41–50 years old | 0.91 (0.90 to 0.94) | 0.92 (0.90 to 0.94) |
| 51–60 years old | 0.89 (0.87 to 0.91) | 0.90 (0.88 to 0.92) |
| 61–70 years old | 0.97 (0.95 to 1.00) | 0.98 (0.96 to 1.00) |
| 71–80 years old | 1.17 (1.13 to 1.20) | 1.17 (1.14 to 1.21) |
| 81–90 years old | 1.34 (1.28 to 1.42) | 1.35 (1.28 to 1.42) |
| >90 years old | 1.62 (1.39 to 1.89) | 1.60 (1.38 to 1.87) |
| Appointment day | ||
| Sunday | Reference | Reference |
| Monday | 0.93 (0.91 to 0.95) | 0.94 (0.91 to 0.96) |
| Tuesday | 0.88 (0.86 to 0.90) | 0.88 (0.86 to 0.90) |
| Wednesday | 0.95 (0.93 to 0.97) | 0.95 (0.93 to 0.97) |
| Thursday | 0.84 (0.83 to 0.86) | 0.85 (0.84 to 0.87) |
| Appointment month | ||
| January | Reference | Reference |
| February | 0.95 (0.91 to 0.98) | 0.95 (0.91 to 0.98) |
| March | 0.95 (0.92 to 0.99) | 0.95 (0.92 to 0.98) |
| April | 1.04 (1.00 to 1.07) | 1.03 (1.00 to 1.07) |
| May | 1.12 (1.08 to 1.15) | 1.12 (1.08 to 1.15) |
| June | 1.24 (1.20 to 1.29) | 1.24 (1.20 to 1.29) |
| July | 1.10 (1.06 to 1.14) | 1.11 (1.07 to 1.14) |
| August | 1.08 (1.05 to 1.12) | 1.09 (1.05 to 1.13) |
| September | 1.00 (0.97 to 1.04) | 1.01 (0.97 to 1.04) |
| October | 1.01 (0.98 to 1.04) | 1.02 (0.98 to 1.05) |
| November | 1.10 (1.06 to 1.13) | 1.10 (1.07 to 1.14) |
| December | 1.04 (1.01 to 1.08) | 1.05 (1.02 to 1.09) |
| Service cost | ||
| Pay visit and registration fees only | Reference | Reference |
| Pay all medical service fees | 1.36 (1.28 to 1.44) | 1.36 (1.28 to 1.44) |
| ‡Under Social Affair coverage | 0.62 (0.59 to 0.66) | 0.64 (0.60 to 0.68) |
| Appointment waiting days | ||
| ≤30 days | Reference | Reference |
| 31–60 days | 1.45 (1.42 to 1.48) | 1.43 (1.40 to 1.47) |
| 61–90 days | 1.40 (1.37 to 1.43) | 1.40 (1.37 to 1.43) |
| 91–120 days | 1.56 (1.52 to 1.60) | 1.55 (1.51 to 1.59) |
| >120 days | 1.87 (1.84 to 1.91) | 1.85 (1.81 to 1.89) |
| Appointment year | ||
| 2014 | Reference | Reference |
| 2015 | 1.06 (1.04 to 1.09) | 1.08 (1.06 to 1.11) |
| 2016 | 0.99 (0.97 to 1.01) | 1.03 (1.00 to 1.05) |
| 2017 | 1.02 (1.00 to 1.05) | 1.09 (1.07 to 1.12) |
| 2018 | 0.95 (0.93 to 0.97) | 1.03 (1.00 to 1.05) |
| Marital status | ||
| Single | 0.91 (0.89 to 0.93) | 0.91 (0.89 to 0.93) |
| Married | Reference | Reference |
| Divorced | 1.15 (1.06 to 1.25) | 1.16 (1.06 to 1.26) |
| Widow | 1.10 (1.03 to 1.18) | 1.10 (1.03 to 1.17) |
| Missing | 1.15 (1.13 to 1.17) | 1.13 (1.11 to 1.15) |
| Nationality | ||
| Omani | Reference | Reference |
| Non-Omani | 1.02 (0.97 to 1.07) | 1.01 (0.96 to 1.06) |
*Stratified by appointment group.
†A fully adjusted OR measures how the change in one predictor affects the odds of a response variable when all other predictors in the model are controlled.
‡Exempted from all medical service fees.