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Statistical Inference for Space Time Series Model with Application to Mumps Data
정애란,김선우,이성덕 한국데이터정보과학회 2006 한국데이터정보과학회지 Vol.17 No.2
Space time series data can be viewed either as a set of time series collected simultaneously at a number of spatial locations or as sets of spatial data collected at a number of time points. The major purpose of this article is to formulate a class of space time autoregressive moving average (STARMA) model, to discuss some of the their statistical properties such as model identification approaches, some procedure for estimation and the predictions. For illustration, we apply this STARMA model to the mumps data. The data set of mumps cases consists of the number of cases of mumps reported from twelve states monthly over the years 1969-1988.
혈액투석 환자의 EPO 투여가 주관적 변화와 일상생활 수행정도, 삶의 질에 미치는 영향에 대한 연구
정애란,김현리 충남대학교 간호과학연구소 1999 충남대 간호학술지 Vol.2 No.1
This study was performed to investigate the effects of Epo medication effect on subjective changes, ADL, and QOL in the process of treatment for chronic renal failure patients. The total of 62 CRF patients who are receiving hemodialysis with EPO medication participated in the study. The data collection period was from July, 2, 1998 to August 14, 1998. The survey data were analyzed utilizing SAS program. The results were as follows. 1. The most frequent underlying disease that required EPO medication for chronic renal failure (CRF) patients was Diabetes Mellitus (32.3%). The values of Hb and Hct were proportionally increased according to the dosage of EPO medication. 2. The mean of ADL score was 4.29 representing relatively high independence of the subjects, and the lowest scored item was “Doing the housework” (M = 3.72). 3. The Subjective physical changes while receiving Epo medication were assessed by 17 items. The CRF patients reported the item of “I have better appetite” as the most improved one (M = 3.93), while the item of “I have better sexual need” was reported with a relatively lower mean score 2.36. The reported QOL mean score for CRF patients with Epo medication in this study was lower than that of previous research results. 4. The mean scores of QOL (t = -2.97, D = 0.0043) and ADL (t = -3.57, p = 0.0007) for the CRF patients with Diabetes Mellitus were lower compare to the patients with other causal diseases. 5. There was positive correlation between the ADL and QOL scores (r = 0.34, p = 0.005). 6. The values of Hct(t = -3.59, p= 0.0002) as well as Hb(t = -4.31, p = 0.0001) were significantly increased in one month after Epo medication.