Mother stress and child sickness over period of around 30 days.
data(mscm)
mscm
C. S. Alexander and R. Markowitz (1986). "Maternal employment and use of pediatric services". Medical Care, 24:134-147.
Zeger and Liang (1986). "Longitudinal Data Analysis for Discrete and Continuous Outcomes," Biometrics, 42, 121-130.
Robins, Greenland, and Hu (1999). "Estimation of the Causal Effect of a Time-Varying Exposure on the Marginal Mean of a Repeated Binary Outcome". Journal of American Statistical Association. 94, 687-700.