Sentence examples for main empirical difficulties from inspiring English sources

We focused on two main empirical difficulties in estimating social network effects within reference groups: firstly, that friendship selection is non-random, which leads to correlation between the error term and friend's health, and, secondly, that confounding factors affect all members of the reference group.

The main contribution of this paper is to address empirical difficulties in testing for spillovers using a regression discontinuity design on a newly collected dataset.

We have produced three main empirical findings.

This section presents my main empirical results.

When theories face empirical difficulties, as they always do, one attempts to modify them.

We then present the results of our main empirical model.

This is the main empirical result of this paper.

Given these features of the data, we used three main empirical modelling approaches.

But there were two main difficulties.

The main difficulties I have are with shooting older women.

Two main difficulties face this approach.