Table 6 Effect of VDD on the increase in vaccine uptake

Effect of a monthly vaccine stockout on the reduction in vaccine uptake, without VDD (percentage points)

0.182

Assuming a month-long stockout happens 38.9% of time (base stockout rate from our result Table 2)

The base-level stockout will cause 18.24% points decrease in the vaccine uptake (= 0.469 × 0.389)

Effect of a monthly vaccine stockout on the reduction in vaccine uptake, with VDD (percentage points)

0.081

Assuming a month-long stockout happens 17.2% of time (ex-post stockout rate from our result Table 2)

The post-VDD stockout will cause 8.07% points decrease in the vaccine uptake (= 0.172 × 0.389)

The increase in the vaccine uptake due to VDD (percentage points)

0.102

Base stockout rate – Ex-post stockout rate (= 0.182 − 0.081)