Table 2.

Marginal estimates at origin date and change at 100 days of follow-up for body mass index

	Exposed	Unexposed	Historical
Time0,Cohort − Time0,Exposed	Ref	−0.07 (−0.12, −0.01)	−0.27 (−0.34, −0.20)
Δ0→100days, Cohort	0 (−0.03, 0.03)	−0.04 (−0.05, −0.02)	0.03 (0.01, 0.04)
Δ0→100days, Cohort – Δ0→100days, Exposed	Ref	−0.04 (−0.06, −0.01)	0.03 (0, 0.06)

All estimates are from the marginal structural model with statistical interaction of exposure group, socio-demographic characteristic (i.e., sex, age, race-ethnicity) and time, after inverse probability weighting for confounding and loss to follow-up. Associations are adjusted for BMI within last 1 year of lookback period and imbalanced covariates.