Associations of region, practice governance, socioeconomic deprivation, child's age, and child's registration age with practice immunisation coverage and timeliness.
| Immunisation coverage | Immunisation timeliness | |||||
|---|---|---|---|---|---|---|
| Practice characteristic (number of practices) | Median % (25th to 75th centile) | Univariate P-value | Multivariate P-valuea | Median % (25th to 75th centile) | Univariate P-value | Multivariate P-valuea |
| Region | ||||||
| Auckland (68) | 68 (53–75) | 0.020 | 0.004 | 55 (41–66) | 0.250 | 0.350 |
| Midland (50) | 73 (58–79) | |||||
| Practice governance | ||||||
| Maori (21) | 56 (44–62) | 0.006 | 0.110 | 40 (25–47) | 0.002 | 0.030 |
| Non-Maori (97) | 73 (63–79) | 59 (47–66) | ||||
| P-value adjusted for region and governance | P-value adjusted for region and governance | |||||
| % of registered patients in most deprived quintileb | ||||||
| <30% (86) | 74 (63–79) | <0.001 | <0.001 | 60 (47–66) | <0.001 | 0.002 |
| ≥30% (32) | 58 (35–65) | 42 (25–58) | ||||
| Median age of registered children at each practice | ||||||
| <13 months (48) | 73 (65–78) | 0.001 | <0.001 | 61 (54–66) | 0.001 | 0.560 |
| ≥13 months (70) | 64 (49–77) | 48 (34–63) | ||||
| Median age of children at registration | ||||||
| <3 months (72) | 74 (63–79) | 0.040 | 0.020 | 60 (46–66) | 0.140 | 0.020 |
| ≥3 months (46) | 63 (46–73) | 47 (35–62) | ||||
↵a Adjusted for other variables in table with socioeconomic deprivation, age, and age at enrolment all entered into model as continuous variables.
↵b Percentage in most socioeconomically deprived quintile included in model as a continuous variable. Socioeconomic deprivation measured using the NZDep2001 Index of Deprivation, a small area-based measure that combines nine variables from the 2001 Census that reflect aspects of material and social deprivation.19