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STS2319 Lakshman N. R. et al.

Table 2. CAPI and Interview Time Table 3. Errors and Enumerator Characteristics

VARIABLES Duration VARIABLES Error Model
Model
Method of Data Collection Method of Data Collection
CAPI (base = PAPI) -28.52*** CAPI (base = PAPI) -1.576**
(6.342) (0.798)
Household Characteristics Household Characteristics
Sex of HH Head (base = Male) -0.0994 Sex of HH Head (base = Male) -0.0394
(0.347) (0.0437)
Age of HH Head -0.0346*** Age of HH Head -0.00605***
(0.00731) (0.000921)
Wage (in thousand VND) 2.66e-05** Wage (in thousand VND) 2.05e-05***
(1.11e-05) (1.40e-06)
No. of adults in the HH 2.956*** No. of adults in the HH 0.186***
(0.0791) (0.00996)
Enumerator Characteristics Enumerator Characteristics
Sex (base = Male) -17.52*** Sex (base = Male) -1.529***
(3.031) (0.382)
Age -0.784*** Age 0.0151
(0.0966) (0.0122)
Experience (in years) 5.048*** Experience (in years) 0.237
(1.574) (0.198)
Squared Experience (in years) -0.0438 Squared Experience (in years) -0.0139
(0.163) (0.0205)
Education (base = Below -12.30*** Education (base = Below -0.188
College level) (2.233) College level) (0.281)
Interaction Effect Interaction Effect
Enumerator and HH head Sex 0.167 Enumerator and HH head Sex 0.0547
(0.415) (0.0522)
Constant 61.23*** Constant 2.108**
(7.558) (0.952)
Observations 5,332 Observations 5,332
R-squared 0.788 R-squared 0.258
EA FE Yes EA FE Yes
Enumerator FE Yes Enumerator FE Yes
Dependent variable: Survey Dependent variable: Total
Duration (in minutes) number of errors
Standard errors in parentheses Standard errors in parentheses
*** p<0.01, ** p<0.05, * p<0.1 *** p<0.01, ** p<0.05, * p<0.1

It is imperative that before scaling up any technology to ascertain whether
the costs make sense. Implementing either CAPI or PAPI involves fixed and
variable costs. The cost analysis involves using these cost categories to identify
the breakeven point where CAPI becomes more cost effective than PAPI. First,
the fixed costs involved include software costs and programming costs. The
software costs are both free for PAPI and CAPI, since we are utilizing CSPro
which is open source. On the other hand, programming costs involved hiring
a programmer/developer for a total of 15 consultancy days for programming
PAPI, and 29 days for CAPI. With a consultancy daily rate of $400 the
programming costs would be $6,000 and $11,500 for PAPI and CAPI,
respectively. In terms of variable costs, these include tablets, data entry costs,

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