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Johan P Velema

Publications and source records attributed to Johan P Velema.

3 recordsLinked to original sources

Reflect before you act: providing structure to the evaluation of rehabilitation programmes.

PURPOSE: This paper is concerned with understanding and evaluating potentially diverse rehabilitation programmes. It helps evaluators and programme managers to focus attention on specific aspects of the rehabilitation process and select evaluation questions relevant to each. METHOD: Distinction is made between the rehabilitation programme itself, the programme environment and the relationships between the two. For each of these areas, evaluation questions have been formulated. For services offered to individual clients, questions address whether the status of clients has improved, what interventions are offered and who benefit from them, the relationships between the service providers and the clients, and who may be involved in the rehabilitation process besides the client. To assess the programme environment, questions address the epidemiology of disability, the resources available to persons with disabilities, the inclusiveness of education and employment and a number of eco-social variables. Relationships between the programme and its environment concern the support of the community for the programme, the way the programme seeks to influence the community, the referral of clients to other services available in the community and the extent to which the programme is a learning organization. RESULTS: Lists of evaluation questions are presented from which the evaluator can select those most relevant to the programme to be evaluated. This provides a framework for the evaluation and for the information to be gathered. Rather than providing a blue print, this framework permits flexibility to adapt to the specific situation of the programme to be evaluated. CONCLUSION: This paper presents a useful guideline that stimulates the thinking of those preparing for the evaluation of rehabilitation programmes.

Health Services Needs and Demand↗

Burning wood in the kitchen increases the risk of cervical neoplasia in HPV-infected women in Honduras.

There is suggestive evidence that the use of wood for cooking increases the risk of invasive cervical cancer. We investigated this association in women with cervical neoplasia in Honduras. Women aged 20-64 years with cervical intraepithelial neoplasia (CIN) grade I (n = 44), CIN II (n = 36) or CIN III (n = 45) were recruited from screening programs in Tegucigalpa City and each was matched by age and clinic to 2 controls (241 total) without cervical abnormalities. The clinics selected women of low socioeconomic status. Cervical scrapes were tested for the presence of human papillomavirus (HPV) DNA using a general primer set directed against the L1 open reading frame, and HPV genotyping was performed. Odds ratios (ORs) were computed through conditional logistic regression; p-values were from tests for linear trend of risk with increasing exposure. HPV DNA was detected in 48% of women with CIN I, 67% with CIN II and 89% with CIN III. The ORs were 1.5, 2.5 and 38.3 respectively. At univariate analysis, age at first intercourse was consistently lower among cases than controls. Risk was reduced by 50% or more in all 3 CIN classes when initiation of sexual activity at age 20 years or older was compared with initiation before age 16 years (p = 0.013 for CIN I). No effect was observed for smoking, oral contraceptives or previous cytologic screening. Effects for number of sexual partners, parity, age at first pregnancy and education were in the expected directions but never persisted after adjustment for HPV. Chronic exposure to wood smoke significantly increased the risk of CIN III (p = 0.022). However, women who said "No" when asked if they ever used wood in the kitchen had a higher risk than those with low or intermediate exposure. This was taken as evidence that the initial screening question had either been misunderstood or that answers were biased. Restricting the analysis to women who reported exposure yielded positive associations in all CIN classes with for CIN III ORs of 2.3 for 25-34 and 9.5 for 35+ years compared with women who had 1-14 years of exposure (p = 0.017). A multivariate analysis of the complete dataset (n = 366) allowed for separate ORs for HPV in each CIN class. Inclusion of age at first intercourse significantly improved this model (p = 0.021). Adding exposure to wood smoke further improved the model only if an interaction between woodsmoke and HPV was allowed for. If, as the data suggest, it was assumed that wood smoke had its effect among HPV-positives only, there was a significant linear dose-response relationship between exposure to woodsmoke and risk of CIN (p = 0.026). This association was independent of other risk factors including education, parity and number of sexual partners. ORs in the final model were 0.37 for age at first intercourse 20 years or higher and 5.69 for more than 35 years of exposure to wood burning in the kitchen. The present study suggests that the use of wood for cooking is a risk factor for cervical neoplasia that deserves further study, given its high prevalence in developing countries.

Adolescent↗

Avoiding misperceptions: classifying rehabilitation projects using letters rather than numbers.

A classification system proposed earlier of the many different known rehabilitation approaches and activities used a quantitative scoring system, thus giving the impression that projects with a higher score were better, more correct or more important than projects with a lower score. We therefore propose an alternative classification based on letters, so that a given combination of letters characterizes a particular type of project. The letters are derived from four dimensions: desired outcome of the intervention, participation of the clients in the rehabilitation process, the target group served and the services offered. Some examples are presented. The classification serves to analyse rehabilitation projects, to define policy and as a starting point for evaluation.

Adult↗