This chapter covers a mix of topics including splines, functional data, extreme values and density estimation. Being associated with continuous time monitoring processes, functional data are usually smooth curves or surfaces and are often treated as realizations of underlying random functions. The basic philosophy of functional data is to consider the observed curves as single entities, rather than only as a sequence of individual observations. Comprehensive surveys of statistical techniques for analyzing functional data can be found in Ramsay and Silverman and Ferraty and Vieu. Goldsmith study Diffusion Tensor Imaging (DTI) metrics of multiple sclerosis (MS) patients over multiple clinical visits. The data consist of 100 subjects, aged between 21 and 70 years at first visit. The number of visits per subject ranges from 2 to 8, and a total of 340 visits were recorded. Most statistical modeling is concerned with the mean …

International Journal of Gynecology & ObstetricsVolume 63, Issue 2 p. 191-193 Brief communication Shorter ultrasonic femur lengths in Hmong fetuses D.K Gjerdingen, Corresponding Author D.K Gjerdingen [email protected] Department of Family Practice and Community Health, University of Minnesota, St Paul, MN, USACorresponding author, Bethesda Clinic, St Paul, USA. Tel.: +1 612 2276551; fax: +1 612 2271804; e-mail: [email protected]Search for more papers by this authorD Tran, D Tran Department of Family Practice and Community Health, University of Minnesota, St Paul, MN, USASearch for more papers by this authorK Chaloner, K Chaloner School of Statistics, University of Minnesota, St Paul, MN, USASearch for more papers by this author D.K Gjerdingen, Corresponding Author D.K Gjerdingen [email protected] Department of Family Practice and Community Health, University of Minnesota, St Paul, MN, USACorresponding author, Bethesda Clinic, St Paul, USA. Tel.: +1 612 2276551; fax: +1 612 2271804; e-mail: [email protected]Search for more papers by this authorD Tran, D Tran Department of Family Practice and Community Health, University of Minnesota, St Paul, MN, USASearch for more papers by this authorK Chaloner, K Chaloner School of Statistics, University of Minnesota, St Paul, MN, USASearch for more papers by this author First published: 21 November 1998 https://doi.org/10.1016/S0020-7292(98)00159-3Citations: 3Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat References 1Yeo GSH, Chan WB, Lun KC, Lai FM. Racial differences in fetal morphometry in Singapore. Ann Acad Med Singapore. 23: 1994; 371–376 CASPubMedGoogle Scholar 2Mathai M, Thomas S, Peedicayil A, Regi A, Jasper P, Joseph R. Growth pattern of the Indian fetus. Int J Gynecol Obstet. 48: 1995; 21–24 10.1016/0020-7292(94)02237-2 CASPubMedWeb of Science®Google Scholar Citing Literature Volume63, Issue2November 1998Pages 191-193 ReferencesRelatedInformation

This prospective, longitudinal study was conducted to investigate the changes in the division of household labor, and in the emotional and practical support received by new mothers during the first postpartum year. Questionnaires were completed by 436 married, recently employed mothers at 1, 3, 6, 9, and 12 months after they had delivered their first child. Results showed that women assumed primary responsibility for the majority of household tasks studied, and that they perceived declines over time in their husbands' participation in household chores, their husbands' and others' expressions of caring, and in the frequency with which friends and relatives "helped out" during the year. Women who had had cesarean sections (versus those with vaginal deliveries) and who returned to work (versus those who stayed home) believed their husbands participated more in traditionally feminine household chores. Women's satisfaction with their husbands' contribution to household activities was significantly related to their own mental health, delivery type (cesarean section), job status (being at home vs. back at work), and family income; and to their husbands' occupation, expressions of caring, and participation in child care and certain household chores (house cleaning, grocery shopping, cooking, washing clothes and dishes, household repairs, car maintenance, and garbage removal). Overall, these findings showed diminishing levels of emotional and practical support for women at a time when the need for support was likely greater: following the birth of their first child.

Three properties of interest in bioavailability studies using compartmental models are the area under the concentration curve, the maximum concentration, and the time to maximum concentration. Methods are described for finding designs that minimize the variance of the estimates of these quantities in such a model. These methods use prior information. Both prior estimates and prior distributions are used. The designs for an open one-compartment model are compared with the corresponding D theta-optimum design for all parameters and also with designs that minimize the sum of the scaled variances of the individual properties.

An approach to detecting outliers in a linear model is developed. An outlier is defined to be an observation with a large random error, generated by the linear model under consideration. Outliers are detected by examining the posterior distribution of the random errors. An augmented residual plot is also suggested as a graphical aid in finding outliers.