vd_weights: Calculates Valliant and Dever weights

Description Usage Arguments Details Value References Examples

View source: R/NonProbEst.R

Description

Computes weights from propensity estimates using the propensity stratification 1/p_i averaging formula introduced in Valliant and Dever (2011).

Usage

1
vd_weights(convenience_propensities, reference_propensities, g = 5)

Arguments

convenience_propensities

A vector with the propensities associated with the convenience sample.

reference_propensities

A vector with the propensities associated with the reference sample.

g

The number of strata to use; by default, its value is 5.

Details

The function takes the vector of propensities π(x) and calculates the weights to be applied in the Horvitz-Thompson estimator using the formula that can be found in Valliant and Dever (2019). The vector of propensities is divided in g strata (ideally five according to Cochran, 1968) aiming to have individuals with similar propensities in each strata. After the stratification, weight is calculated as follows for an individual i:

w_i = \frac{n(g_i)}{ ∑_{k \in g_i} π_k (x)}

where g_i represents the strata to which i belongs, and n(g_i) is the number of individuals in the g_i strata.

Value

A vector with the corresponding weights.

References

Valliant, R., & Dever, J. A. (2011). Estimating propensity adjustments for volunteer web surveys. Sociological Methods & Research, 40(1), 105-137.

Cochran, W. G. (1968). The Effectiveness of Adjustment by Subclassification in Removing Bias in Observational Studies. Biometrics, 24(2), 295-313

Examples

1
2
3
covariates = c("education_primaria", "education_secundaria")
data_propensities = propensities(sampleNP, sampleP, covariates)
vd_weights(data_propensities$convenience, data_propensities$reference)

Example output

Loading required package: lattice
Loading required package: ggplot2
   [1] 2.095137 1.932302 2.074002 2.095137 2.074002 2.095137 1.932302 2.074002
   [9] 2.074002 1.932302 2.074002 1.932302 2.095137 1.932302 1.932302 1.932302
  [17] 2.095137 2.095137 1.932302 2.095137 1.932302 1.932302 1.932302 1.932302
  [25] 1.932302 2.074002 2.074002 2.095137 2.074002 1.932302 2.095137 2.095137
  [33] 2.095137 2.095137 2.095137 1.932302 2.095137 2.074002 1.932302 2.095137
  [41] 2.095137 1.932302 1.932302 1.932302 1.932302 2.095137 2.095137 2.074002
  [49] 1.932302 1.932302 1.932302 2.095137 1.932302 2.074002 2.095137 1.932302
  [57] 2.095137 2.095137 1.932302 2.095137 2.095137 2.095137 1.932302 2.095137
  [65] 2.095137 2.095137 2.074002 1.932302 2.095137 1.932302 2.095137 2.095137
  [73] 2.095137 1.932302 1.932302 2.095137 2.074002 2.095137 2.074002 1.932302
  [81] 2.095137 2.074002 1.932302 2.095137 2.074002 2.095137 2.074002 1.932302
  [89] 2.095137 2.095137 2.095137 2.095137 1.932302 2.095137 1.932302 2.095137
  [97] 2.095137 1.932302 2.095137 1.932302 1.932302 2.095137 2.074002 2.095137
 [105] 2.095137 1.932302 2.095137 2.095137 2.074002 2.095137 2.095137 1.932302
 [113] 1.932302 2.095137 2.095137 2.095137 2.074002 2.074002 2.095137 2.095137
 [121] 2.095137 1.932302 1.932302 2.095137 2.095137 1.932302 2.095137 2.095137
 [129] 2.095137 2.074002 2.095137 2.095137 1.932302 2.074002 2.095137 2.095137
 [137] 2.074002 2.095137 2.095137 2.095137 2.095137 2.095137 2.074002 1.932302
 [145] 2.095137 1.932302 1.932302 1.932302 1.932302 2.074002 2.074002 1.932302
 [153] 2.095137 2.095137 2.095137 1.932302 2.095137 2.095137 1.932302 2.095137
 [161] 2.095137 2.074002 2.074002 2.074002 2.074002 2.074002 2.074002 2.095137
 [169] 2.074002 2.095137 1.932302 2.074002 2.074002 1.932302 1.932302 2.095137
 [177] 1.932302 2.095137 2.095137 2.074002 2.095137 1.932302 2.095137 2.095137
 [185] 1.932302 2.095137 2.074002 1.932302 2.095137 2.074002 2.095137 2.074002
 [193] 2.095137 2.095137 2.095137 2.095137 2.095137 2.095137 1.932302 1.932302
 [201] 1.932302 2.095137 2.095137 2.095137 1.932302 2.095137 1.932302 2.095137
 [209] 2.074002 1.932302 2.095137 1.932302 2.074002 2.074002 2.095137 1.932302
 [217] 1.932302 2.095137 1.932302 2.095137 2.095137 2.095137 1.932302 1.932302
 [225] 2.095137 2.095137 1.932302 1.932302 2.095137 2.095137 2.095137 1.932302
 [233] 2.074002 1.932302 2.095137 2.074002 2.074002 1.932302 2.095137 1.932302
 [241] 1.932302 1.932302 2.095137 2.074002 2.095137 2.095137 1.932302 2.074002
 [249] 1.932302 2.074002 1.932302 2.095137 2.095137 2.095137 2.095137 2.095137
 [257] 1.932302 2.074002 2.074002 1.932302 2.074002 1.932302 1.932302 2.095137
 [265] 2.074002 1.932302 2.074002 1.932302 2.095137 2.095137 2.074002 2.074002
 [273] 2.074002 1.932302 2.095137 2.074002 2.095137 2.095137 2.095137 2.074002
 [281] 2.095137 2.074002 1.932302 2.074002 2.074002 2.095137 2.074002 1.932302
 [289] 2.095137 1.932302 2.095137 2.074002 2.095137 1.932302 1.932302 2.074002
 [297] 1.932302 2.095137 1.932302 2.095137 2.074002 2.095137 2.074002 2.095137
 [305] 2.095137 2.095137 2.095137 2.095137 2.074002 1.932302 1.932302 2.095137
 [313] 2.074002 1.932302 2.074002 2.074002 2.095137 2.095137 2.095137 1.932302
 [321] 1.932302 1.932302 2.074002 2.074002 2.095137 2.095137 1.932302 2.095137
 [329] 2.095137 2.095137 2.095137 1.932302 1.932302 2.095137 1.932302 2.095137
 [337] 1.932302 2.074002 2.074002 2.095137 2.095137 1.932302 2.095137 2.095137
 [345] 2.095137 2.095137 1.932302 2.095137 2.074002 2.095137 2.095137 1.932302
 [353] 1.932302 2.095137 1.932302 2.095137 1.932302 2.095137 2.074002 2.095137
 [361] 2.095137 1.932302 2.095137 1.932302 2.095137 2.095137 1.932302 2.095137
 [369] 1.932302 1.932302 2.095137 1.932302 1.932302 2.095137 2.074002 2.095137
 [377] 2.095137 1.932302 1.932302 2.074002 2.074002 2.095137 2.074002 2.095137
 [385] 2.095137 2.095137 2.095137 1.932302 1.932302 2.095137 2.095137 2.095137
 [393] 2.095137 2.074002 1.932302 2.074002 1.932302 1.932302 2.095137 2.095137
 [401] 2.074002 1.932302 2.074002 1.932302 2.095137 1.932302 2.095137 1.932302
 [409] 2.074002 2.095137 1.932302 2.074002 1.932302 2.095137 2.095137 1.932302
 [417] 1.932302 2.095137 2.095137 2.074002 1.932302 2.074002 2.074002 2.095137
 [425] 2.074002 1.932302 2.095137 1.932302 1.932302 2.095137 2.095137 2.074002
 [433] 2.095137 2.095137 2.095137 2.074002 2.095137 1.932302 2.095137 2.095137
 [441] 2.095137 2.095137 2.074002 2.095137 2.074002 2.095137 1.932302 1.932302
 [449] 2.095137 2.074002 2.095137 1.932302 1.932302 2.095137 2.095137 2.095137
 [457] 1.932302 2.074002 1.932302 2.074002 2.074002 2.095137 1.932302 2.095137
 [465] 1.932302 1.821317 1.821317 2.074002 1.821317 2.095137 2.074002 2.095137
 [473] 2.095137 1.821317 2.095137 2.095137 2.095137 2.095137 2.074002 2.095137
 [481] 2.074002 2.095137 1.821317 2.074002 2.095137 2.074002 2.074002 2.074002
 [489] 1.821317 2.074002 2.095137 2.074002 1.821317 1.821317 2.074002 2.095137
 [497] 2.095137 1.821317 2.095137 2.095137 2.074002 2.095137 1.821317 1.821317
 [505] 2.095137 2.074002 1.821317 2.095137 1.821317 2.095137 2.095137 2.095137
 [513] 2.074002 1.821317 1.821317 1.821317 2.074002 2.095137 2.074002 2.095137
 [521] 1.821317 2.074002 1.821317 2.095137 2.095137 2.095137 2.095137 1.821317
 [529] 1.821317 2.074002 2.095137 2.095137 2.095137 2.095137 2.074002 2.095137
 [537] 2.074002 2.095137 2.095137 2.095137 2.095137 1.821317 2.095137 2.074002
 [545] 2.095137 2.095137 1.821317 2.074002 2.095137 2.095137 2.095137 2.095137
 [553] 2.095137 1.821317 2.095137 2.074002 1.821317 2.095137 2.074002 1.821317
 [561] 2.095137 1.821317 2.095137 1.821317 2.095137 2.074002 2.095137 2.095137
 [569] 2.074002 1.821317 2.095137 2.095137 1.821317 2.074002 2.095137 2.095137
 [577] 2.095137 2.074002 2.074002 2.095137 2.074002 2.095137 2.095137 1.821317
 [585] 2.095137 2.095137 1.821317 1.821317 2.074002 2.074002 2.095137 1.821317
 [593] 2.074002 2.095137 2.074002 1.821317 2.095137 2.095137 2.095137 2.095137
 [601] 2.095137 1.821317 2.095137 2.074002 2.095137 2.074002 1.821317 1.821317
 [609] 2.095137 2.095137 2.074002 2.074002 1.821317 1.821317 1.821317 1.821317
 [617] 1.821317 2.095137 2.074002 2.095137 2.074002 2.095137 2.095137 1.821317
 [625] 2.095137 2.074002 2.074002 2.095137 2.074002 2.095137 1.821317 1.821317
 [633] 2.095137 1.821317 2.095137 2.095137 2.095137 2.074002 2.095137 1.821317
 [641] 1.821317 2.095137 2.095137 2.095137 2.095137 2.095137 2.074002 2.095137
 [649] 2.074002 2.074002 1.821317 1.821317 2.095137 2.074002 2.074002 1.821317
 [657] 2.074002 2.095137 1.821317 1.821317 1.821317 2.095137 2.095137 2.095137
 [665] 2.074002 2.074002 1.821317 2.074002 2.074002 1.821317 1.821317 2.095137
 [673] 1.821317 2.095137 1.821317 1.821317 2.074002 1.821317 2.095137 2.095137
 [681] 2.095137 1.821317 2.095137 1.821317 1.821317 2.095137 1.821317 1.821317
 [689] 2.095137 2.095137 2.074002 1.821317 2.074002 2.074002 2.095137 2.095137
 [697] 2.095137 1.821317 2.074002 2.095137 1.821317 1.821317 2.095137 1.821317
 [705] 2.095137 2.095137 2.095137 2.074002 1.821317 2.095137 2.095137 1.821317
 [713] 2.095137 1.821317 2.074002 2.095137 2.074002 2.074002 1.821317 1.821317
 [721] 2.074002 2.074002 1.821317 2.095137 2.095137 2.095137 2.095137 2.095137
 [729] 1.821317 2.095137 2.095137 2.095137 2.074002 2.095137 1.821317 1.821317
 [737] 2.074002 2.074002 2.095137 2.095137 2.095137 2.095137 1.821317 2.095137
 [745] 2.095137 2.095137 2.095137 2.074002 1.821317 1.932302 1.821317 1.821317
 [753] 1.821317 1.821317 1.821317 2.095137 1.821317 2.095137 2.095137 2.095137
 [761] 1.821317 1.821317 1.821317 2.095137 1.932302 1.932302 1.932302 1.821317
 [769] 2.095137 2.095137 1.821317 2.095137 1.821317 2.095137 1.821317 2.095137
 [777] 2.095137 1.932302 1.821317 2.095137 2.095137 1.932302 2.095137 2.095137
 [785] 2.095137 1.821317 1.821317 1.932302 1.821317 1.821317 1.821317 1.932302
 [793] 1.932302 2.095137 1.932302 1.821317 1.821317 1.821317 1.932302 1.821317
 [801] 1.821317 1.821317 1.932302 2.095137 1.821317 1.821317 1.821317 2.095137
 [809] 1.821317 2.095137 2.095137 2.095137 2.095137 2.095137 2.095137 1.932302
 [817] 1.821317 1.821317 2.095137 1.821317 1.821317 1.932302 2.095137 1.821317
 [825] 1.821317 1.821317 2.095137 2.095137 2.095137 2.095137 1.821317 2.095137
 [833] 2.095137 1.821317 2.095137 1.932302 2.095137 1.821317 1.821317 1.821317
 [841] 1.932302 2.095137 2.095137 2.095137 2.095137 2.095137 2.095137 1.932302
 [849] 1.821317 1.932302 2.095137 2.095137 2.095137 1.821317 1.932302 2.095137
 [857] 2.095137 1.821317 1.821317 2.095137 2.095137 1.932302 2.095137 1.821317
 [865] 1.932302 2.095137 1.821317 1.932302 2.095137 1.821317 1.932302 1.932302
 [873] 2.095137 1.821317 2.095137 2.095137 1.821317 1.821317 2.095137 2.095137
 [881] 2.095137 1.932302 2.095137 2.095137 2.095137 1.932302 1.821317 2.095137
 [889] 2.095137 1.821317 2.095137 1.821317 2.095137 1.932302 1.821317 1.932302
 [897] 1.821317 2.095137 2.095137 1.932302 2.095137 1.821317 1.821317 2.095137
 [905] 1.932302 2.095137 1.932302 2.095137 2.095137 1.821317 2.095137 1.821317
 [913] 1.821317 1.932302 1.821317 1.821317 2.095137 1.821317 2.095137 2.095137
 [921] 1.932302 2.095137 1.821317 1.821317 2.095137 2.095137 2.095137 2.095137
 [929] 2.095137 1.821317 1.821317 2.095137 1.821317 2.095137 2.095137 1.932302
 [937] 1.821317 1.932302 2.095137 2.095137 2.095137 2.095137 1.821317 2.095137
 [945] 2.095137 1.932302 2.095137 1.821317 2.095137 2.095137 1.821317 2.095137
 [953] 2.095137 2.095137 1.821317 2.095137 2.095137 1.932302 2.095137 2.095137
 [961] 2.095137 1.821317 2.095137 2.095137 1.821317 2.095137 2.095137 2.095137
 [969] 2.095137 2.095137 1.932302 1.821317 1.821317 2.095137 1.821317 2.095137
 [977] 2.095137 2.095137 1.821317 2.095137 1.932302 2.095137 2.095137 2.095137
 [985] 2.095137 2.095137 1.821317 2.095137 1.821317 1.932302 1.821317 2.095137
 [993] 2.095137 1.821317 1.821317 2.095137 2.095137 1.821317 1.821317 2.095137

NonProbEst documentation built on July 1, 2020, 6:08 p.m.