Table 2 Awareness rate, prevalence ratios (PRs) and 95% confidence intervals (CIs) of immunization knowledge of non-NIP vaccines among the caregivers from four family types in urban areas in Zhejiang Province and rural areas in Henan Province, China 2022 (n = 1648)
|  | Local urban (n = 517) | Migrant (n = 276) | Non-left-behind (n = 488) | Left-behind (n = 367) |
|---|---|---|---|---|
Awareness, n (%) | ||||
 Vaccine convenience | 487 (94.2) | 268 (97.1) | 472 (96.7) | 338 (92.1) |
 Vaccine category | 494 (95.6) | 255 (92.4) | 480 (98.4) | 354 (94.5) |
 Vaccine efficiency | 490 (94.8) | 249 (90.2) | 472 (96.7) | 334 (91.0) |
 Vaccination continuity | 300 (58.0) | 135 (48.9) | 165 (33.8) | 100 (27.3) |
 Vaccination time | 488 (94.4) | 268 (97.1) | 482 (98.8) | 364 (99.2) |
 Vaccination schedule | 497 (96.1) | 265 (96.0) | 473 (96.9) | 363 (98.9) |
 Adverse event | 427 (82.6) | 165 (59.8) | 398 (81.6) | 271 (73.8) |
 All | 213 (41.2) | 64 (23.2) | 95 (19.5) | 42 (11.4) |
PR (95% CI) | ||||
 All | 1.00 | 0.55 (0.43–0.70) | 0.47 (0.38–0.58) | 0.28 (0.21–0.38) |