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Data quality indicators used to compare National Immunization Information System (NIIS) and physical stock balances by province (N=30).
| Physical stock | Total | Ha Noi (n=19) | Son La (n=11) | P value | |
| Indicators, (%) | |||||
|
|
Vaccine and supplies of 3 lots tracked in the NIIS | 26 (87) | 18 (95) | 8 (72) | .13 |
|
|
Physical vaccine stock balances of 3 lots matched NIIS | 21 (70) | 16 (84) | 5 (46) | .04 |
