Two-Year Follow-Up of a Multi-centre Randomized Controlled Trial to Study Effectiveness of a Hospital-Based Work Support Intervention for Cancer Patients.

Purpose Purpose is to: (1) study effectiveness of the hospital-based work support intervention for cancer patients at two years of follow-up compared to usual care and (2) identify which early factors predict time to return-to-work (RTW). Methods In this multi-center randomised controlled trial (RCT), 106 (self-)employed cancer patients were randomized to an intervention group or control group and provided 2 years of follow-up data. The intervention group received patient education and work-related support at the hospital. Primary outcome was RTW (rate and time) and quality of life (SF-36), and secondary outcomes were, work ability (WAI), and work functioning (WLQ). Univariate Cox regression analyses were performed to study which early factors predict time to full RTW. Results Participants were diagnosed with breast (61%), gynaecological cancer (35%), or other type of cancer (4%). RTW rates were 84% and 90% for intervention versus control group. They were high compared to national register-based studies. No differences between groups were found on any of the outcomes. Receiving chemotherapy (HR = 2.43, 95% CI 1.59-3.73 p < 0.001), low level of education (HR = 1.65, 95% CI 1.076-2.52 p = 0.02) and low work ability (HR = 1.09 [95% CI 1.04-1.17] p = 0.02) were associated with longer time to full RTW. Conclusions We found high RTW rates compared to national register-based studies and we found no differences between groups. Future studies should therefore focus on reaching the group at risk, which consist of patients who receive chemotherapy, have a low level of education and have a low work ability at diagnosis. TRIAL REGISTRATION: Netherlands Trial Registry (NTR) (http://www.trialregister.nl/trialreg/admin/rctview.asp?TC=1658): NTR1658.

A questionnaire to measure medical students' attitudes towards occupational medicine.

BACKGROUND: Occupational medicine is not well represented in medical curricula. Educational programmes should aim at raising the interest of medical students in occupational medicine. AIMS: To develop a questionnaire to measure the attitude of medical students towards occupational medicine. METHODS: We drew up statements about attitudes. We used a 5-point Likert scale to elicit answers from second-year medical students. We analysed the questionnaires with exploratory factor analysis to find common scales. After item reduction, we used the questionnaire in third-year medical students from another medical faculty, before and after education. RESULTS: Responses from 141 second-year and 208 third-year medical students were available. Analysis resulted in 18 statements in three scales: a career as an occupational physician, occupational medicine as an interesting speciality and role of the occupational physician. We measured modest changes following an occupational medicine programme. Further development of the questionnaire with qualitative research will lead to better usability. CONCLUSIONS: This questionnaire can be used to measure attitude towards occupational medicine; however, this questionnaire needs to be developed further.

A hospital-based work support intervention to enhance the return to work of cancer patients: a process evaluation.

PURPOSE: To perform a process evaluation of a hospital-based work support intervention for cancer patients aimed at enhancing return to work and quality of life. The intervention involves the delivery of patient education and support at the hospital and involves the improvement of the communication between the treating physician and the occupational physician. In addition, the research team asked patient's occupational physician to organise a meeting with the patient and the supervisor to make a concrete gradual return-to-work plan. METHODS: Eligible were cancer patients treated with curative intent and who have paid work. Data were collected from patients assigned to the intervention group (N = 65) and from nurses who delivered the patient education and support at the hospital (N = 4) by means of questionnaires, nurses' reports, and checklists. Data were quantitatively and qualitatively analysed. RESULTS: A total of 47 % of all eligible patients participated. Nurses delivered the patient education and support in 85 % of the cases according to the protocol. In 100 % of the cases at least one letter was sent to the occupational physician. In 10 % of the cases the meeting with the patient, the occupational physician and the supervisor took place. Patients found the intervention in general very useful and nurses found the intervention feasible to deliver. CONCLUSIONS: We found that a hospital- based work support intervention was easily accepted in usual psycho-oncological care but that it proved difficult to involve the occupational physician. Patients were highly satisfied and nurses found the intervention feasible.

Case-based e-learning to improve the attitude of medical students towards occupational health, a randomised controlled trial.

OBJECTIVES: Undergraduate medical teaching in occupational health (OH) is a challenge in universities around the world. Case-based e-learning with an attractive clinical context could improve the attitude of medical students towards OH. The study question is whether case-based e-learning for medical students is more effective in improving knowledge, satisfaction and a positive attitude towards OH than non-case-based textbook learning. METHODS: Participants, 141 second year medical students, were randomised to either case-based e-learning or text-based learning. Outcome measures were knowledge, satisfaction and attitude towards OH, measured at baseline, directly after the intervention, after 1 week and at 3-month follow-up. RESULTS: Of the 141 participants, 130 (92%) completed the questionnaires at short-term follow-up and 41 (29%) at 3-month follow-up. At short-term follow-up, intervention and control groups did not show a significant difference in knowledge nor satisfaction but attitude towards OH was significantly more negative in the intervention group (F=4.041, p=0.047). At 3-month follow-up, there were no significant differences between intervention and control groups for knowledge, satisfaction and attitude. CONCLUSIONS: We found a significant decrease in favourable attitude during the internship in the experimental group compared with the control group. There were no significant differences in knowledge or satisfaction between case-based e-learning and text-based learning. The attitude towards OH should be further investigated as an outcome of educational programmes.

Work-related upper extremity disorders: one-year follow-up in an occupational diseases registry.

PURPOSE: To study the course and consequences of work-related upper extremity disorders in the registry of the Netherlands Centre for Occupational Diseases (NCvB). METHODS: A follow-up study was performed in a sample of consecutive cases of work-related upper extremity disorders notified to the NCvB. Perceived severity was measured with VAS (0-100), quality of life with VAS (0-100) and SF-36, functional impairment with DASH and sickness absence with a questionnaire. Measurements took place directly after notification (T0) and after 3, 6 and 12 months (T1-T3). A linear mixed model was used to compare scores over time. RESULTS: Average age of the 48 consecutive patients (89% response) was 42 years; 48% were men. Perceived severity, functional impairment and sickness absence decreased statistically significant during the follow-up period, and quality of life scores improved. Patients older than 45 years scored worse on perceived severity of the disease, functional impairment and quality of life than did younger patients. CONCLUSIONS: The role of registries of occupational diseases for preventive policy can be extended by creating longitudinal data in sample projects. In the sample from our registry, work-related upper extremity disorders had a favourable course.

Fatigue and its correlates in cancer patients who had returned to work--a cohort study.

OBJECTIVES: Fatigue and other symptoms in cancer patients often interfere with social and occupational activities. Only a few studies, however, have examined relationship between fatigue and work-related outcomes. The aim of this study was to investigate which disease-related factors (treatment, diagnosis, cognitive dysfunction, depression, pain, and sleep disturbance) and work-related factors (work-load, work pressure, relationship to supervisor and colleagues, size of the company, and workplace accommodations) were related to fatigue in employed cancer survivors. METHODS: Data was collected by questionnaire at 6 months (baseline) and 18 months (end of the follow-up) after cancer diagnosis from 135 people with different types of cancer who had returned to work at follow-up. Fatigue was measured with a four-item sub-scale of MFI. Scores ranged from 4 to 20, with higher scores indicating more fatigue. RESULTS: The mean rate of general fatigue was 11.9 at baseline decreasing to 10.4 at the end of the follow-up (p<0.0001). At 6 months, higher work pressure (p = 0.02), physical workload (p<0.05) and less workplace accommodations (p = 0.03) were related to higher levels of fatigue. From disease-related factors, depression was associated with fatigue (p<0.0001) at baseline. Lack of workplace accommodations was the only factor affecting higher levels of fatigue at 18 months (p<0.001) and was also related to higher levels of depression at 6 months (p = 0.02) and at 18 months (p<0.001). CONCLUSIONS: Lack of workplace accommodations was significantly related to fatigue at the end of the follow-up, which suggests that accommodations for illness can help to reduce fatigue and depression.

Evaluation of occupational disease surveillance in six EU countries.

BACKGROUND: Registries of occupational diseases in various European countries differ considerably in criteria for notification and recognition, statistical data provided and the legal and social security context. Therefore, figures on occupational diseases are not comparable between countries and are often regarded as not reliable even within a country. Still, registries of occupational diseases are an important source for policy on occupational safety and health. AIMS: To evaluate registries of occupational diseases in European (EU) countries for their ability to provide appropriate information for preventive policy. METHODS: Contact persons of national registries for occupational diseases in six countries were sent a questionnaire on the objectives of their registry and on the quality of monitoring time trends and alerting to new risks. An auditor then visited each contact person, discussed the completed questionnaire and sent a draft audit report to the contact person for verification. Two reviewers then established a quality score based on the verified audit report. The results of the audit were sent to each contact person, who was asked to evaluate the usefulness of the audit instrument for future quality improvement of the registry. RESULTS: The objectives of the registries assessed in the six countries were compensation, provision of statistics, prevention and research. The average quality was rated 3.2 (SD 2.2) out of 10 for monitoring occupational diseases and 5.3 (SD 1.4) out of 10 for alerting to new risks. The main reasons for the low scores were inadequate education and training of physicians and poor participation of notifying physicians. Three of the six contact persons (50%) agreed that the audit could actually contribute to future quality improvement of the registry in relation to prevention. CONCLUSIONS: Registries in EU countries do not adequately monitor existing occupational diseases or adequately alert to newly occurring occupational diseases. There is an urgent need to improve the education and participation of notifying physicians.

Return-to-work interventions integrated into cancer care: a systematic review.

OBJECTIVES: The purpose of this study was to review the literature on the content of interventions focusing on return to work, employment status, or work retention in patients with cancer. Furthermore, the effect of the interventions on return to work was assessed in studies reporting return to work. METHODS: A literature search was conducted using the databases MEDLINE, PsycINFO, EMBASE and CINAHL. Articles that described a work-directed intervention focusing on return to work, employment status, or work retention in patients with cancer were included. The content of the work-directed part of the interventions was assessed based on two criteria for content analysis: 1. does the setting fit the shared care model of cancer survivor care? 2. Does the intervention target work ability and physical workload? For studies reporting return-to-work outcomes, the return-to-work rates were assessed. For studies that used a control group the ORs and the 95% CIs were calculated. RESULTS: Twenty-three articles describing 19 interventions met the inclusion criteria. Seven studies reported return-to-work outcomes of which four used a control group. Only three interventions aimed primarily at enhancing return to work or employment status. The most frequently reported work-directed components were encouragement, education or advice about work or work-related subjects (68%), vocational or occupational training (21%), or work accommodations (11%). One intervention fit the shared care model of cancer survivor care and five interventions enhanced work ability or decreased physical workload. The rate of return to work ranged from 37% to 89%. In one of the four controlled studies the intervention increased return to work significantly and in the other studies the results were insignificant. CONCLUSIONS: Only few interventions are primarily aimed at enhancing return to work in patients with cancer and most do not fit the shared care model involving integrated cancer care. Future studies should be developed with well-structured work-directed components that should be evaluated in randomised controlled trials.

Writing a Cochrane systematic review on preventive interventions to improve safety: the case of the construction industry.

OBJECTIVES: The objective of this paper is to describe the main steps and to conduct a systematic literature review on preventive interventions concerning work-related injuries and to illustrate the process. METHODS: Based on the Cochrane handbook, a structured framework of six steps was outlined for the development of a systematic review. This framework was used to describe a Cochrane systematic review (CSR) on the effectiveness of interventions to prevent work related injuries in the construction industry. RESULTS: The 6 main steps to write a CSR were: formulating the problem and objectives; locating and selecting studies; assessing study quality; collecting data; analysing data and presenting results; and interpreting results. The CSR on preventing injuries in the construction industry yielded five eligible intervention studies. Re-analysis of original injury data of the studies on regulatory interventions, through correcting for pre-intervention injury trends led to different conclusions about the effectiveness of interventions than those reported in the original studies. CONCLUSIONS: The Cochrane handbook for systematic reviews of interventions provides a practical and feasible six-step framework for developing and reporting a systematic review for preventive interventions.

Sentinel surveillance of occupational diseases: a quality improvement project.

BACKGROUND: Occupational diseases are generally underreported. The aim of this study was to evaluate whether a sentinel surveillance project comprising motivated and guided occupational physicians would provide higher quality information than a national registry for a policy to prevent occupational diseases. METHODS: A group of 45 occupational physicians participated in a sentinel surveillance project for two years. All other occupational physicians (N = 1,729) in the national registry were the reference group. We compared the number of notifications per occupational physician, the proportion of incorrect notifications, and the overall reported incidence of occupational diseases. RESULTS: The median number of notifications per occupational physician during the project was 13.0 (IQR, 4.5-31.5) in the sentinel group versus 1.0 (IQR, 0.0-5.0) in the reference group (P < 0.001). The proportion of incorrect notifications was 3.3% in the sentinel group and 8.9% in the reference group (P < 0.001). The overall reported occupational disease incidence was 7 times higher (RR = 6.9, 95% CI: 6.5-7.4) in the sentinel group (466 notifications per 100,000 employee years) than in the reference group (67 notifications per 100,000 employee years). CONCLUSIONS: A sentinel surveillance group comprising motivated and guided occupational physicians reported a substantially higher occupational disease incidence and a lower proportion of incorrect notifications than a national registry.

The effectiveness of an educational programme on occupational disease reporting.

BACKGROUND: Occupational diseases are under reported. Targeted education of occupational physicians (OPs) may improve their rate of reporting occupational diseases. AIM: To study the effectiveness of an active multifaceted workshop aimed at improving OPs' reporting of occupational diseases. METHODS: We undertook a comparative study with 112 OPs in the intervention group and 571 OPs as comparisons. The intervention was a 1-day workshop. Measurements of occupational disease reporting activity in both groups in 6-month periods before and after the intervention were collected via the national registration system. Measurements of OPs' knowledge, self-efficacy and satisfaction were made in the intervention group. Differences between the groups and predictive factors for reporting were subsequently analysed statistically. RESULTS: The percentage of reporting OPs after the intervention was significantly higher in the intervention group compared to the comparison group at 19 versus 11% (P < 0.01). No differences were found in the average number of reported occupational diseases per reporting physician after the intervention: 3.7 (SD 5.37) versus 3.4 (SD 4.56) (not significant). The self-efficacy score was a predictive factor for reporting occupational diseases (P < 0.05). Measurements of knowledge and self-efficacy increased significantly (both parameters P < 0.001) and remained after half a year. Satisfaction was high (7.85 of 10). CONCLUSIONS: An active, multifaceted workshop on occupational diseases is effective in increasing the number of physicians reporting occupational diseases. Self-efficacy measures are a predictive factor for such reporting.

Interventions to improve occupational health in depressed people.

BACKGROUND: Work disability such as sickness absence is common in people with depression. OBJECTIVES: To evaluate the effectiveness of interventions aimed at reducing work disability in depressed workers. SEARCH STRATEGY: We searched the CCDANCTR-Studies and CCDANCTR-References on 2/8/2006, Cochrane Library CENTRAL register, MEDLINE, EMBASE, CINAHL, PsycINFO, OSH-ROM (Occupational Safety and Health), NHS-EED, and DARE. SELECTION CRITERIA: We included randomised controlled trials (RCTs) and cluster RCTs of work-directed and worker-directed interventions for depressed people, using sickness absence as the primary outcome DATA COLLECTION AND ANALYSIS: Two authors independently extracted data and assessed trial quality. We used standardised mean differences (SMD) with 95% confidence intervals (CIs) to pool study results where possible. MAIN RESULTS: We included eleven studies, all of worker-directed interventions, involving 2556 participants. Only one study addressed work issues using adjuvant occupational therapy. Other interventions evaluated anti-depressant medication (selective serotonin reuptake inhibitors, serotonin-norepinephrine reuptake inhibitors, tricyclic antidepressants, monoamino-oxidase inhibitors), psychodynamic therapy, enhanced primary care and psychological treatment. For medication, the combined results of three studies (n=864) showed no difference between antidepressant medication and alternative medication in their effect on days of sickness absence (SMD 0.09; 95% CI -0.05 to 0.23) In two pooled studies (n=969), the effect of enhanced primary care on days of sickness absence did not differ from usual care in the medium term (SMD -0.02; 95% CI -0.15 to 0.12). All other comparisons were based on single studies (n=6), all of which showed a lack of significant difference for sickness absence between groups, with the exception of one small study, combined psychodynamic therapy and TCAs versus TCAs alone, which favoured the combined treatment. AUTHORS' CONCLUSIONS: Based on a heterogeneous sample of studies, there is currently no evidence of an effect of medication alone, enhanced primary care, psychological interventions or the combination of those with medication on sickness absence of depressed workers. In future RCTs, interventions should specifically address work issues, and occupational outcomes should be used to measure the effect..

Work ability and return-to-work in cancer patients.

The extent to which self-assessed work ability collected during treatment can predict return-to-work in cancer patients is unknown. In this prospective study, we consecutively included employed cancer patients who underwent treatment with curative intent at 6 months following the first day of sick leave. Work ability data (scores 0-10), clinical and sociodemographic data were collected at 6 months, while return-to-work was measured at 6, 12 and 18 months. Most of the 195 patients had been diagnosed with breast cancer (26%), cancer of the female genitals (22%) or genitourological cancer (22%). Mean current work ability scores improved significantly over time from 4.6 at 6 months to 6.3 and 6.7 at 12 and 18 months, respectively. Patients with haematological cancers and those who received chemotherapy showed the lowest work ability scores, while patients with cancer of urogenital tract or with gastrointestinal cancer had the highest scores. Work ability at 6 months strongly predicted return-to-work at 18 months, after correction for the influence of age and treatment (hazard ratio=1.37, CI 1.27-1.48). We conclude that self-assessed work ability is an important factor in the return-to-work process of cancer patients independent of age and clinical factors.

Diagnosing and reporting of occupational diseases: a quality improvement study.

AIM: To assess the need for quality improvement of diagnosing and reporting of noise-induced occupational hearing loss and occupational adjustment disorder. METHODS: Performance indicators and criteria for the quality of diagnosing and reporting were developed. Self-assessment questionnaires were sent to all occupational physicians recorded on the Netherlands Centre for Occupational Diseases database. The performance of responding occupational physicians was then assessed by separate scores per performance indicator and by a total quality score. RESULTS: Twenty-three questionnaires on noise-induced occupational hearing loss and 125 questionnaires on occupational adjustment disorder were available for analysis. The mean quality score for diagnosing and reporting was 6.0 (SD: 1.4) for noise-induced occupational hearing loss and 7.9 (SD: 1.5) for occupational adjustment disorder on a scale of 0-10. For noise-induced occupational hearing loss, there was a need for quality improvement of the aspects of medical history, audiometric measurement, clinical diagnosis of the disease and reporting. For occupational adjustment disorder, the assessment of other non-occupational causes needed improvement. CONCLUSIONS: The quality of diagnosing and reporting could be improved for noise-induced occupational hearing loss and occupational adjustment disorders. Information, education and practical tools are proposed for quality improvements.

Interventions for preventing voice disorders in adults.

BACKGROUND: Poor voice quality due to a voice disorder can lead to a reduced quality of life. In occupations where voice use is substantial it can lead to periods of absence from work. OBJECTIVES: To evaluate the effectiveness of interventions to prevent voice disorders in adults. SEARCH STRATEGY: We searched MEDLINE (PubMed, 1950 to 2006), EMBASE (1974 to 2006), CENTRAL (The Cochrane Library, Issue 2 2006), CINAHL (1983 to 2006), PsychINFO (1967 to 2006), Science Citation Index (1986 to 2006) and the Occupational Health databases OSH-ROM (to 2006). The date of the last search was 05/04/06. SELECTION CRITERIA: Randomised controlled clinical trials (RCTs) of interventions evaluating the effectiveness of treatments to prevent voice disorders in adults. For work-directed interventions interrupted time series and prospective cohort studies were also eligible. DATA COLLECTION AND ANALYSIS: Two authors independently extracted data and assessed trial quality. Meta-analysis was performed where appropriate. MAIN RESULTS: We identified two randomised controlled trials including a total of 53 participants in intervention groups and 43 controls. One study was conducted with teachers and the other with student teachers. Both trials were poor quality. Interventions were grouped into 1) direct voice training, 2) indirect voice training and 3) direct and indirect voice training combined.1) Direct voice training: One study did not find a significant decrease of the Voice Handicap Index for direct voice training compared to no intervention.2) Indirect voice training: One study did not find a significant decrease of the Voice Handicap Index for indirect voice training when compared to no intervention.3) Direct and indirect voice training combined: One study did not find a decrease of the Voice Handicap Index for direct and indirect voice training combined when compared to no intervention. The same study did however find an improvement in maximum phonation time (Mean Difference -3.18 sec; 95 % CI -4.43 to -1.93) for direct and indirect voice training combined when compared to no intervention. No work-directed studies were found. None of the studies found evaluated the effectiveness of prevention in terms of sick leave or number of diagnosed voice disorders. AUTHORS' CONCLUSIONS: We found no evidence that either direct or indirect voice training or the two combined are effective in improving self-reported vocal functioning when compared to no intervention. The current practice of giving training to at-risk populations for preventing the development of voice disorders is therefore not supported by definitive evidence of effectiveness. Larger and methodologically better trials are needed with outcome measures that better reflect the aims of interventions.

Interventions for treating functional dysphonia in adults.

BACKGROUND: Poor voice quality due to functional dysphonia can lead to a reduced quality of life. In occupations where voice use is substantial it can lead to a loss of employment. OBJECTIVES: To evaluate the effectiveness of interventions to treat functional dysphonia in adults. SEARCH STRATEGY: We searched MEDLINE (PubMed, 1950 to 2006), EMBASE (1974 to 2006), CENTRAL (The Cochrane Library, Issue 2 2006), CINAHL (1983 to 2006), PsychINFO (1967 to 2006), Science Citation Index (1986 to 2006) and the Occupational Health databases OSH-ROM (to 2006). The date of the last search was 5(th) April 2006. SELECTION CRITERIA: Randomised controlled trials (RCTs) of interventions evaluating the effectiveness of treatments targeted at adults with functional dysphonia. For work-directed interventions interrupted time series and prospective cohort studies were also eligible. DATA COLLECTION AND ANALYSIS: Two authors independently extracted data and assessed trial quality. Meta-analysis was performed where appropriate. MAIN RESULTS: We identified six randomised controlled trials including a total of 163 participants in intervention groups and 141 controls. One trial was high quality. Interventions were grouped into 1) Direct voice therapy 2) Indirect voice therapy 3) Combination of direct and indirect voice therapy and 4) Other treatments: pharmacological treatment and vocal hygiene instructions given by phoniatrist. No studies were found evaluating direct voice therapy on its own. One study did not show indirect voice therapy on its own to be effective when compared to no intervention. There is evidence from three studies for the effectiveness of a combination of direct and indirect voice therapy on self-reported vocal functioning (SMD -1.07; 95% CI -1.94 to -0.19), on observer-rated vocal functioning (WMD -13.00; 95% CI -17.92 to -8.08) and on instrumental assessment of vocal functioning (WMD -1.20; 95% CI -2.37 to -0.03) when compared to no intervention. The results of one study also show that the remedial effect remains significant for at least 14 weeks on self-reported vocal functioning (SMD -0.51; 95% CI -0.87 to -0.14) and on observer-rated vocal functioning (Buffalo Voice Profile) (WMD -0.80; 95% CI -1.14 to -0.46). There is also limited evidence from one study that the number of symptoms may remain lower for a year. The combined therapy with biofeedback was not shown to be more effective than combined therapy alone in one study nor was pharmacological treatment found to be more effective than vocal hygiene instructions given by phoniatrist in one study. Publication bias may have influenced the results. AUTHORS' CONCLUSIONS: Evidence is available for the effectiveness of comprehensive voice therapy comprising both direct and indirect therapy elements. Effects are similar in patients and in teachers and student teachers screened for voice problems. Larger and methodologically better studies are needed with outcome measures that match treatment aims.

Evaluation of an occupational health intervention programme on whole-body vibration in forklift truck drivers: a controlled trial.

OBJECTIVES: To evaluate process and outcome of a multifaceted occupational health intervention programme on whole-body vibration (WBV) in forklift truck drivers. METHODS: An experimental pretest/post-test control group study design. The authors trained occupational health services (OHS) in the experimental group in the use of the programme. OHS in the control group were asked to deliver care as usual. In total, 15 OHS, 32 OHS professionals, 26 companies, and 260 forklift drivers were involved. Post-test measurements were carried out one year after the start of the programme. RESULTS: Baseline data before the start of the programme showed no difference between experimental and control group. Results of the outcome evaluation indicate a slight, although not statistically significant, reduction of WBV exposure in the experimental group (p = 0.06). Process evaluation revealed a positive influence on company policy toward WBV, attitude and intended behaviour of forklift drivers, and a trend towards an increase in knowledge of OHS professionals and company managers. The number of observed control measures with a major impact (levelling of surface and reduction of speed) was rather low. In those cases where control measures had been taken, there was a significant reduction in WBV exposure. This limited effect of the programme might be caused by the short period of follow up and the dropout of participants. The feasibility and the usefulness of the programme within the OHS setting were rated good by the participants. CONCLUSIONS: This programme to decrease WBV exposure was partially effective. Significant effects on intermediate objectives were observed. More research on the effectiveness of intervention in the field of WBV is needed.