# SHRUG Quickstart⚓︎

Welcome to the SHRUG quickstart tutorial. This will be your entry point to accessing data on the SHRUG platform. This tutorial is primarily written for Stata and Python users.

Data available for download here

## Example 1⚓︎

Open up the population census data. Let's explore some trends in urbanization over the past three decades.

```
/******************************************/
/* Set globals to where the data is saved */
/******************************************/
global shrug ~/Desktop
/* Let's merge population census data at the village-town level across 1991-2011 */
use $shrug/shrug_pc91, clear
qui merge 1:1 shrid using $shrug/shrug_pc01, keep(match) nogen
qui merge 1:1 shrid using $shrug/shrug_pc11, keep(match) nogen
preserve
collapse (sum) *_pca_tot_p_u *_pca_tot_p
foreach yr in 91 01 11 {
gen urban_`yr' = pc`yr'_pca_tot_p_u / pc`yr'_pca_tot_p
}
graph bar (mean) urban_*, legend(pos(6) col(3) order(1 "1991" 2 "2001" 3 "2011")) title("Urbanization rate: India") ytitle("% Urban Population") scheme ("s1mono")
restore
```

```
# import pandas
import pandas as pd
# load shrug population census data for all 3 rounds
shrug_pc91 = pd.read_stata("shrug_pc91.dta")
shrug_pc01 = pd.read_stata("shrug_pc01.dta")
shrug_pc11 = pd.read_stata("shrug_pc11.dta")
# merge data from all rounds
shrug_merged = shrug_pc91.merge(shrug_pc01, on = "shrid", how = "inner")
shrug_merged = shrug_merged.merge(shrug_pc11, on = "shrid", how = "inner")
# aggregate data to national totals
shrug_total = shrug_merged[['pc91_pca_tot_p', 'pc01_pca_tot_p', 'pc11_pca_tot_p', 'pc91_pca_tot_p_u', 'pc01_pca_tot_p_u', 'pc11_pca_tot_p_u']].agg(['sum'])
# calculate percentage of urban population in each decade
shrug_total["urban_91"] = shrug_total["pc91_pca_tot_p_u"] / shrug_total["pc91_pca_tot_p"]
shrug_total["urban_01"] = shrug_total["pc01_pca_tot_p_u"] / shrug_total["pc01_pca_tot_p"]
shrug_total["urban_11"] = shrug_total["pc11_pca_tot_p_u"] / shrug_total["pc11_pca_tot_p"]
# plot bar graph of urbanization rate
shrug_total[["urban_91", "urban_01", "urban_11"]].plot(kind = "bar")
```

## Example 2⚓︎

**Motivating hypothesis:** In economics, it is commonly believed that during the demographic transition, families have fewer children and those children get more education. This is sometimes called the "quantity-quality" tradeoff.

Translating into our data: Between 1991 and 2011, average number of family members fell as literacy rates rose.

```
/* Let's calculate the average number of family members per household */
gen hh_size_91 = pc91_pca_tot_p/pc91_pca_no_hh
gen hh_size_01 = pc01_pca_tot_p/pc01_pca_no_hh
gen hh_size_11 = pc11_pca_tot_p/pc11_pca_no_hh
/* let's check the values of household size for outliers */
sum hh_size_*, detail
/* Some households are 700 people. Assume that average household size does not exceed 10 */
replace hh_size_91 = . if hh_size_91 >= 10
replace hh_size_01 = . if hh_size_01 >= 10
replace hh_size_11 = . if hh_size_11 >= 10
/* let's visualize household size across 3 time periods */
graph bar (mean) hh_size_91 hh_size_01 hh_size_11
```

```
/* let's create literacy rates */
gen lit_91 = pc91_pca_p_lit/pc91_pca_tot_p
gen lit_01 = pc01_pca_p_lit/pc01_pca_tot_p
gen lit_11 = pc11_pca_p_lit/pc11_pca_tot_p
twoway (lfitci lit_91 hh_size_91) (lfitci lit_01 hh_size_01) ///
(lfitci lit_11 hh_size_11, legend(label(2 "1991") label(3 "2001") label(4 "2011")) ///
ytitle("Literate population %") xtitle("Mean household size") ///
ylabel(0 (0.2) 1) xlabel(0 (1) 10))
```

```
/* let's calculate the change in average household size in each village from 1991 to 2011 */
gen hh_change_91_11 = ln(hh_size_11) - ln(hh_size_91)
/* let's calc the average change in literacy rate between 1991 and 2011 */
gen lit_91_11 = lit_11 - lit_91
/* Graph the relationship */
twoway (lfitci lit_91_11 hh_change_91_11)
```