Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A tutorial for using propensity score weighting for moderation analysis:
  an application to smoking disparities among LGB adults   Objective. To provide step-by-step guidance and STATA and R code for using
propensity score (PS) weighted analyses when estimating moderation effects.
Data Sources and Study Setting. Using data on 41,832 adults from the 2019
National Survey on Drug Use and Health (NSDUH), we examine if gender moderates
the association between sexual minority status and adult smoking prevalence and
illustrate the application of the key steps outlined in this tutorial Study
Design. Tutorial illustrating the key steps for estimating and testing
moderation. Steps include (1) examining covariate overlap across
treatment/exposure groups within levels of the moderator, (2) estimating the PS
weights, (3) assessing the quality of the PS weights, (4) estimating the
moderated effects, and (5) assessing sensitivity of findings to unobserved
confounding. Principal Findings. All balance criteria suggesting successful
balance has been achieved within each level of the moderator when estimating
the needed PS weights. In our outcome models, the estimated risk difference of
current smoking for LGB vs heterosexual males is 0.05 (95% CI = 0.00, 0.10. In
contrast, the risk difference for female LGB individuals is larger, equaling
0.15 (95% CI = 0.08, 0.18) and supporting clear evidence of moderation in the
case study. Notably, the risk difference for females was highly robust to
unobserved confounders while the risk difference for males was highly sensitive
and easy to wipe away. Conclusions. Estimating robust moderation effects in
observational studies requires thoughtful consideration of imbalances between
the key groups being compared. Propensity score weighting within each level of
the moderator can improve the estimated moderation effects by minimizing bias
from imbalance within the moderator subgroups.

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The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
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The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: nlin
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The categories of this paper are: mtrl-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: math-ph
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The categories of this paper are: q-alg
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The categories of this paper are: q-fin
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The categories of this paper are: cs
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The categories of this paper are: alg-geom
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The categories of this paper are: chem-ph