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Methodology & Data Overview
Survey Framework
Sample: Respondents from all five major regions of Brazil: North, Northeast, Center-West, Southeast, and South.
Demographics: Gender and age groups (18–24, 25–34, 35–44, 45–54, 55–64, 65+).
Key Questions:
Q1: What matters most when buying personal care products (e.g., shampoo, shower gel, deodorant)? (select one answer)
a) Low price & Discounts – I choose the cheapest option or wait for discounts.
b) Ingredients & Quality – I prefer for example natural or eco-friendly products.
c) Familiar brands – I stick to brands I know and trust.
d) Recommendations – I choose products specialists, friends, or family suggest.
Q2: Where do you most often buy personal care products? (select one answer)
a) Pharmacy or drugstore – I prefer buying from a pharmacy.
b) Local stores – I shop at neighborhood stores
c) Supermarkets & hypermarkets – I grab them while doing other shoppings
d) Online – I buy from online stores.
To understand the key drivers behind consumer choice in a commerce-oriented brand study, we conducted an online survey using run-of-network targeting across digital media. The setup was designed to ensure balanced representation from all five major regions of Brazil – North, Northeast, Center-West, Southeast, and South – providing a comprehensive view of the national consumer base. The analysis focused on identifying the most influential factors determining consumer behavior by applying one-vs-all logistic regressions using the variable “Main Purchase Decision Factor” as the target. This variable captures the primary reason respondents chose a product, encompassing options such as brand familiarity, ingredient quality, low price/promotions, and recommendations.
The dataset contains 2,648 fully completed responses — only participants who answered all four survey questions were included in the analysis to ensure data quality. The dataset comprises both categorical features (e.g., gender, age, region, purchase location) and binary indicators representing exposure to various contextual domains such as “World Localities,” “Automotive,” “Sports,” and others. After excluding records with missing target responses, a one-hot encoding scheme was applied to all categorical variables, and context exposures were treated as binary features. Each unique target class was analyzed against all others using a separate logistic regression, yielding interpretable coefficients, odds ratios, and significance values. This allowed us to identify the variables most predictive of each decision factor while controlling for others.