DI@L-log by design: an integrated tele-care communication infrastructure

A spoken dialogue system for the acquisition of type 2 diabetes mellitus (T2DM) home monitored patient data known as DI@L-log is presented. The purpose of the system is to collect weight, blood sugar and blood pressure readings from a cohort of hypertensive T2DM patients on a weekly basis using their home telephone. The recent voice-data convergence affords an arguably improved means for doctors to track patient health states at a distance in order to provide health institutions with more frequent and accurate patient profiles. Our system architecture integrates VoiceXML and the standard PSTN, with a Pan-European open source for hosting Internet telephony applications. This paper reports on recent developments in the design of DI@L-log, which aims to serve as a communication intervention that disparages the traditional paper logbook used to document readings by the patient.

An experimental study of determinants of the extent of disagreement within clinical guideline development groups

OBJECTIVE

To assess the effect of design features and clinical and social cues on the extent of disagreement among participants in a formal consensus development process.

METHODS

Factorial design involving 16 groups consisting of 135 general practitioners (GPs) and 42 mental health professionals from England. The groups rated the appropriateness of four mental health interventions for three conditions (chronic back pain, irritable bowel syndrome, and chronic fatigue syndrome) in the context of various clinical and social cues. The groups differed in three design features: provision of a systematic literature review (versus not provided), group composition (mixed versus GP only), and assumptions about the healthcare resources available (realistic versus idealistic). Disagreement was measured using the mean absolute deviation from a group's median rating for a scenario.

RESULTS

None of the design features significantly affected the extent of disagreement within groups (all p>0.3). Disagreement did differ between treatments (closer consensus for cognitive behavioural therapy and behavioural therapy than for brief psychodynamic intervention therapy and antidepressants) and cues (closer consensus for depressed patients and patients willing to try any treatment).

CONCLUSION

In terms of the extent of disagreement in the groups in this study, formal consensus development was a robust technique in that the results were not dependent on the way it was conducted.

A case of infant botulism with a possible link to infant formula milk powder: evidence for the presence of more than one strain of Clostridium botulinum in clinical specimens and food

Infant botulism was confirmed in a 5-month-old female by both isolation of Clostridium botulinum type B and by detection of type B botulinum neurotoxin in rectal washout and faeces. DNA fingerprinting of nine isolates from faeces yielded two different amplified-fragment length polymorphism (AFLP) patterns. C. botulinum was isolated from two of 14 food and drink items from the patient's home: C. botulinum type A was recovered from an opened container of dried rice pudding and C. botulinum type B from opened infant formula milk powder. Ten C. botulinum type B isolates from the opened infant formula yielded four AFLP patterns, two of which were indistinguishable from the clinical isolates. Fifteen unopened foods were tested and C. botulinum type B of a unique AFLP pattern was recovered from one unopened infant formula of the same batch as the opened container. It is suggested that multiple C. botulinum were present in both food and the intestine during infant botulism.

Grommets in otitis media with effusion: an individual patient data meta-analysis

AIMS

To identify subgroups of children with otitis media with effusion (OME) that might benefit more than others from treatment with ventilation tubes.

METHODS

An individual patient data (IPD) meta-analysis on seven randomised controlled trials (n = 1234 children in all), focusing on interactions between treatment and baseline characteristics--hearing level (HL), history of acute otitis media, common colds, attending day-care, gender, age, socioeconomic status, siblings, season, passive smoking, and history of breast feeding. Outcome measures that could be studied were mean time spent with effusion (n = 557), mean hearing levels (n = 557 in studies that randomised children, and n = 180 in studies that randomised ears), and language development (n = 381).

RESULTS

In the trials that treated both ears the only significant interaction was between day-care and surgery, occurring where mean hearing level was the outcome measure. None of the other baseline variables showed an interaction effect with treatment that would justify subgrouping. In the trials that treated only one ear, the baseline hearing level showed a significant but not pervasive interaction with treatment-that is, only with a cut-off of 25 dB HL.

CONCLUSIONS

The effects of conventional ventilation tubes in children studied so far are small and limited in duration. Observation (watchful waiting) therefore seems to be an adequate management strategy for most children with OME. Ventilation tubes might be used in young children that grow up in an environment with a high infection load (for example, children attending day-care), or in older children with a hearing level of 25 dB HL or greater in both ears persisting for at least 12 weeks.

Directory of clinical databases: improving and promoting their use

BACKGROUND

The controversy surrounding the actual and potential use of clinical databases partly reflects the huge variation in their content and quality. In addition, use of existing clinical databases is severely limited by a lack of knowledge of their availability.

OBJECTIVES

To develop and test a standardised method for assessing the quality (completeness and accuracy) of clinical databases and to establish a web based directory of databases in the UK.

METHODS

An expert group was set up (1). to establish the criteria for inclusion of databases; (2). to develop a quality assessment instrument with high content validity, based on epidemiological theory; (3). to test empirically, modify, and retest the acceptability to database custodians, face validity and floor/ceiling effects; and (4). to design a website.

RESULTS

Criteria for inclusion of databases were the provision of individual level data; inclusion in the database defined by a common circumstance (e.g. condition, treatment), an administrative arrangement, or an adverse outcome; and inclusion of data from more than one provider. A quality assessment instrument consisting of 10 items (four on coverage, six on reliability and validity) was developed and shown to have good face and content validity, no floor/ceiling effects, and to be acceptable to database custodians. A website (www.docdat.org) was developed. Indications over the first 18 months (number of visitors to the site) are that it is increasingly popular. By November 2002 there were around 3500 hits a month.

CONCLUSIONS

A website now exists where visitors can identify clinical databases in the UK that may be suitable to meet their aims. It is planned both to develop a local version for use within a hospital and to encourage similar national systems in other countries.

A national census of Irish general practice training programme graduates 1990-1996

We followed the career pathways of all graduates of Irish general practice training schemes between 1990 and 1996 inclusive, with specific reference to their current positions, ten year aspirations, perceived barriers to their ideal career and attitudes to out of hours work. A postal survey using a structured questionnaire was performed. Addresses were identified for 253 of the 266 graduates (95%). A total of two hundred and nine responses were received (84% of those with an identifiable address). 173 (83%) have remained in general practice; 90% in Ireland and 60% in the same health board of their training programme. The preferred career option for 79% was to be a general practice principal; this differed significantly between males (89%) and females (74%) (p=0.016). Being a single-handed general practitioner was the preferred option for 2%; 43% considered this unacceptable. A half would prefer to work in a country town; one third considered a rural location as unacceptable. 'Out of hours' commitment and availability of local posts were the most commonly perceived barriers to career progress (53% and 45% respectively). 26% were not prepared to do any out of hours work; this differed significantly between males (10%) and females (30%) (p<.001). 17% have permanently left a career in general practice. Female general practitioners were not significantly more likely than male general practitioners to have left (19% vs. 14%, p=0.3). The most common reason given for leaving general practice was other career interest (78%). The significant increase in female general practice graduates over the past twenty years is highlighted. The vast majority of these female graduates wished to be a principal in a group practice and were prepared to undertake out of hours work. There is also a mismatch between career aspirations and the present structure of general practice in Ireland. The urgent need for changes in health system organisation to ensure that these intentions can be fulfilled is emphasised.

Reduction in the use of surgery for glue ear: did national guidelines have an impact?

BACKGROUND

It is widely accepted that the passive dissemination of national clinical guidance has little or no impact on practice.

OBJECTIVE

To assess the impact in England of an Effective Health Care bulletin on childhood surgery for glue ear issued in 1992 and to understand the reasons for any change (or lack of change) in practice that ensued.

METHOD

Time series analysis of the rate of use of surgery by children under 10 years of age from 1975 to 1997/8 in 13 English health districts.

RESULTS

Following a rise in the rate of surgery in public (National Health Service) hospitals from 1975 to 1985, the rate declined by 1.6% a year from 1986 to 1992/3. Following publication of the guidelines in November 1992, the rate of decline increased to 10.1% a year. Even after allowing for a slight increase in the use of independent (private) hospitals between 1992/3 and 1997/8, the overall rate of decline was at least 7.9%. It appears that the rate of referral of cases by primary care physicians (general practitioners) halved during this period. Several contextual factors are thought to have contributed to the effect of the guidelines, including pre-existing professional concern about the value of surgery, the introduction of an internal market into the NHS, and growing apprehension among parents fuelled by scepticism in the mass media. During this unprecedented period of rapid change in usage, staff delivering the service remained unaware of the alterations in their own practice.

CONCLUSIONS

Passive dissemination of national guidelines can accelerate an existing trend in clinical practice if the context is hospitable. Policy makers should identify and target such situations.

Influence of patient gender on admission to intensive care

STUDY OBJECTIVES

To compare the case mix and outcomes of male and female patients admitted to intensive care units for a wide range of conditions.

DESIGN

Cross sectional study of prospectively collected data.

SETTING

The Intensive Care National Audit and Research Centre, (ICNARC) Case Mix Programme.

PARTICIPANTS

46 587 admissions to 91 units across England, Wales, and Northern Ireland.

MAIN RESULTS

No gender differences were found in case mix on admission or in mortality for five conditions (cardiac arrhythmia, chronic obstructive airways disease, asthma, self poisoning, and seizures). There was some evidence of horizontal and vertical inequity for female patients with myocardial infarction and with neurological bleeding. Vertical equity was not achieved for male pneumonia and ventricular failure patients and for women with primary brain injury.

CONCLUSIONS

This study demonstrated, for the first time, possible inequitable use of intensive care for patients with certain conditions. This may be secondary to gender bias and can result in either over-treatment in the favoured group, or under-treatment in the neglected group. It would therefore be pertinent to re-examine these findings using other databases, and to further investigate the causative factors, including gender bias.

Outbreak of tuberculosis at a Newcastle public house: the role and effectiveness of contact screening

We report an outbreak of tuberculosis (TB) that originated in a public house, involving 12 cases. The presumed index case was a regular patron. Initial screening of close contacts identified no further cases. Six cases of TB then presented symptomatically among other regular patrons. Contact screening was extended to include all regular patrons and bar staff. In total, 110 individuals were screened. One case was detected and three children were placed on chemoprophylaxis. Transmission of M. tuberculosis between patrons of a public house may cause community outbreaks of TB. Where cases present outside a close-contact screening program, extended contact screening must be considered.