Industry report takes aim at CNC study linking betting to rising household debt, but flaws remain

Brazil's betting sector has submitted a fresh analysis to federal authorities that challenges earlier research tying sports wagering to higher consumer debt and default rates.

The document, commissioned by the National Association of Games and Lotteries (ANJL), targets a study from the National Trade Confederation (CNC) that used a difference-in-differences approach to argue that betting activity worsened household finances after January 2023.

According to the ANJL report, the CNC's methodology lacks a control group, meaning it cannot establish causality. The observed correlation between the period and rising debt could instead reflect concurrent economic shifts—such as changes in interest rates, inflation, credit conditions, employment, or income transfers. With just 59 monthly data points, the CNC identified a temporal overlap but not a proven causal link.

However, the ANJL report itself suffers from significant gaps. It does not recalculate the CNC's estimates, introduce an alternative data set, or run an independent econometric model. A review by the Brazilian magazine Veja further found inconsistencies in the CNC's reported coefficients and significance markers—for instance, a coefficient of -0.305 accompanied by a standard error of 0.348 was marked with three asterisks, a flag usually reserved for 1% significance, yet the numbers do not support that classification. The ANJL document reproduced some of these markers without rechecking them, and it explicitly states it did not audit the underlying CNC data. It provides no replication code, statistical appendix, or econometric verification.

The report also moves beyond methodological critique into policy advocacy. It defends advertising as a tool to channel bettors toward licensed operators and argues that tighter restrictions would push activity to the illegal market. These positions, while relevant, rest on studies and estimates that are themselves industry-funded.

In sum, the ANJL has exposed a real and consequential weakness in the CNC study—its inability to prove that betting caused the debt increase. But the industry's case does not go further; the document does not demonstrate that no such effect exists. The debate remains unresolved, with the burden of proof still unsettled.