International journal of epidemiology
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Prior to 1989, Krabi and Satun, two neighbouring provinces with similar socioeconomic background and health service coverage, had the highest reported incidence rates of neonatal tetanus in Thailand (3 per 1000 livebirths). A control programme was conducted between 1989 and 1991. The objective of this study was to examine changes in prevalence of risk factors among the population and changes in incidence rates of this disease due to this programme. ⋯ From 1989 to 1991, in Krabi Province, the coverage of at least two doses of tetanus toxoid injections at any time prior to delivery, delivery by trained health personnel, acceptable sterile technique for umbilical cord cutting and correct method of dressing the umbilical stump rose from 70 to 88%, 55-80% cent, 80-94% and 40-74%, respectively. Reduction in the incidence rate of neonatal tetanus was achieved by strengthening of routine health services with or without additional mass immunization. Considering that the coverage of immunization has not yet been completed and the prevalence rates of different risk factors are still high, further attempts to improve the problem of neonatal tetanus are necessary.
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The Injury Severity Score (ISS) is a widely used measure of anatomical injury. It is the sum of squares of the highest scores on the Abbreviated Injury Scale (AIS) in each of the three most severely injured body regions. This study was designed to describe the relationship between ISS and length of stay (LOS) in hospital. ⋯ The study demonstrates non-linear and non-homogeneous relationships between ISS and LOS. Exclusion of fatalities resulted in biased (higher) estimates of LOS among those with ISS scores of 25-66. The patients could be grouped into five categories according to their maximal AIS (MAIS): (1) Slight injury--i.e. those with injuries appropriate for AIS scores 1 or 2 that lead to an LOS of median 5 days; (2) Moderate injury--i.e. those with injuries appropriate to AIS scores of 3, with an expected median LOS of 10 days; (3) Severe injuries--i.e. those with injuries appropriate to AIS scores of 4, with expected median LOS of about 17 days; (4) Very severe injuries--i.e. those with one injury appropriate to an AIS score of 5; and (5) Multiple severe injuries--those who are severely wounded in two or more body regions, i.e. those with two or more injuries appropriate to AIS scores of 5 and 4, with a median LOS of 39 days.(ABSTRACT TRUNCATED AT 250 WORDS)