Table 3 Factors influencing average costs per patient record using a fixed effects weighted least squares model

Immunization information system (IIS) record created within 6 weeks of birth ^¶

0.198356 **

$0.22^†

Clinic access to IIS data during patient encounter ^¶

-0.370097***

-$0.31^†

Update record in IIS within 30 days of vaccine administration ^¶

0.342897***

$0.41^†

Identify persons needing vaccine reminder/recall notifications ^¶

-0.179461**

-$0.16^†

Automatically produce immunization coverage reports ^¶

-0.117172*

-$0.11^†

Produce official immunization records ^¶

-0.190538**

-$0.17^†

Promote IIS data accuracy and completeness ^¶

0.411732***

$0.51^†

Received other federal government funding

0.328083***

$0.39^†

Received state government funds

-0.535686***

-$0.41^†

Received local government funds

0.716021*

$1.05^†

Received private organization funds

-0.272138**

-$0.24^†

Received in-kind support

0.579388***

$0.78^†

Proportion of vaccine providers participating in the IIS

1.364995***

0.25

(Proportion of vaccine providers participating in the IIS)²

-0.921197*

Proportion of IIS patient records that are children

-1.523795***

-0.71

Number of patient records in the IIS (all ages)

-0.000003***

-1.96

(Number of patient records in the IIS)²

0.000000***

Average wage of development personnel^§

-0.047884***

-0.05

Average wage of operations personnel^§

-0.122950***

-0.12

Average wage of development contractor^§

-0.019642***

-0.02

Spending on development equipment^§

0.062248***

0.06

Spending on operations equipment^§

0.027393***

0.03

Spending on development supplies^§

0.072092***

0.07

Spending on operations travel^§

0.049979***

0.05

Other spending on development^§

0.050567***

0.05

Contractual spending on development^§

0.036724***

0.04

Contractual spending on operations^§

0.053036***

0.05