In this paper we review the literature on the problem of handling multivariate data with
observations missing on some or all of the variables under study. We examine the ways that …

… s R ], ie after S L but up to and possibly at S R . An example of this kind exists in the AIDS
study where subjects were periodically examined to determine the HIV-1 status. In Figure 2, “−” …

Background We conducted a double-blind, randomized, placebo-controlled trial to determine
the effects of oral cyclophosphamide on lung function and health-related symptoms in …

Background Cardiovascular disease is common in older adults with end-stage renal disease
who are undergoing regular dialysis, but little is known about the prevalence and extent of …

Background We evaluated the contribution of sentinel-node biopsy to outcomes in patients
with newly diagnosed melanoma. Methods Patients with a primary cutaneous melanoma …

Background Sentinel-lymph-node biopsy is associated with increased melanoma-specific
survival (ie, survival until death from melanoma) among patients with node-positive …

Objectives: We evaluated recurrence and survival for 68 patients with malignant melanoma
who participated in a 6-week structured psychiatric group intervention 5 to 6 years earlier, …

Background Sentinel-node biopsy, a minimally invasive procedure for regional melanoma
staging, was evaluated in a phase 3 trial. Methods We evaluated outcomes in 2001 patients …

Background: Preclinical and observational studies suggest a relationship between dietary
fat intake and breast cancer, but the association remains controversial. We carried out a …

Background 12 months of oral cyclophosphamide has been shown to alter the progression
of scleroderma-related interstitial lung disease when compared with placebo. However, …