Occupational screening for sleep disorders in 12-h shift nurses using the Berlin Questionnaire.

BACKGROUND: The Berlin Questionnaire has been validated as a screening tool for sleep apnea in clinical samples, but no occupational studies have reported screening validity parameters for this instrument. The objectives of this pilot study were to describe the prevalence of sleep-disordered breathing symptoms in registered nurses and examine the validity of the Berlin Questionnaire to screen for sleep apnea in this chronically partially sleep-deprived group. Validity parameters for the Berlin Questionnaire are tabulated for published studies to 2012. METHODS: Twenty-one female nurses working full time 12-h shifts underwent overnight, in-laboratory polysomnography to identify sleep disorders and completed a Berlin Questionnaire. RESULTS: By polysomnogram, the prevalence of sleep-disordered breathing [Respiratory Disturbance Index (RDI) ≥ 5] was 43 %, although by the Berlin Questionnaire only 24 % were deemed high risk. The sensitivity of the Berlin Questionnaire to detect high-risk subjects (RDI > 5) was 0.33, with a specificity of 0.83, a positive predictive value of 0.60, and negative predictive value of 0.63. Berlin criterion 3 (obesity or hypertension) performed the best for predicting sleep apnea in 12-h shift nurses. CONCLUSIONS: Although the Berlin Questionnaire produced valuable data about symptoms of sleep apnea in this population, it had a high proportion of false negatives. To improve its sensitivity for screening health care workers for sleep apnea, it must better capture symptoms specific to this population. Increasing the weighting of Berlin criterion 3 items should be considered to improve its psychometric properties.

Sleep, sleepiness, fatigue, and performance of 12-hour-shift nurses.

Nurses working 12-h shifts complain of fatigue and insufficient/poor-quality sleep. Objectively measured sleep times have not been often reported. This study describes sleep, sleepiness, fatigue, and neurobehavioral performance over three consecutive 12-h (day and night) shifts for hospital registered nurses. Sleep (actigraphy), sleepiness (Karolinska Sleepiness Scale [KSS]), and vigilance (Performance Vigilance Task [PVT]), were measured serially in 80 registered nurses (RNs). Occupational fatigue (Occupational Fatigue Exhaustion Recovery Scale [OFER]) was assessed at baseline. Sleep was short (mean 5.5 h) between shifts, with little difference between day shift (5.7 h) and night shift (5.4 h). Sleepiness scores were low overall (3 on a 1-9 scale, with higher score indicating greater sleepiness), with 45% of nurses having high level of sleepiness (score > 7) on at least one shift. Nurses were progressively sleepier each shift, and night nurses were sleepier toward the end of the shift compared to the beginning. There was extensive caffeine use, presumably to preserve or improve alertness. Fatigue was high in one-third of nurses, with intershift fatigue (not feeling recovered from previous shift at the start of the next shift) being most prominent. There were no statistically significant differences in mean reaction time between day/night shift, consecutive work shift, and time into shift. Lapsing was traitlike, with rare (39% of sample), moderate (53%), and frequent (8%) lapsers. Nurses accrue a considerable sleep debt while working successive 12-h shifts with accompanying fatigue and sleepiness. Certain nurses appear more vulnerable to sleep loss than others, as measured by attention lapses.

Quality of reporting randomized controlled trials (RCTs) in the nursing literature: application of the consolidated standards of reporting trials (CONSORT).

In the era of evidence-based practice (EBP), Randomized Controlled Trials (RCTs) may provide the best evidence of the efficacy of nursing interventions and yet the quality of RCT reporting in nursing literature has not been evaluated. The purposes of this study were to apply the Consolidated Standards of Reporting Trials (CONSORT) statement to published reports of nursing science, examine how adequately the published reports adhere to the statement, and examine the effect of the adoption of CONSORT on the quality of the RCT published reports. One hundred RCTs from 2002-2005 were identified from 4 nursing journals. Articles were randomly assigned to 4 reviewers and the quality of the published reports was evaluated using a modified CONSORT checklist. There was no difference between the 4 journals in the quality of the published reports of RCTs based on the modified CONSORT checklist employed (F = 1.27, P =.29). The quality of reporting of RCTs improved significantly in the only journal, Nursing Research, to adopt the CONSORT statement during the study period (t =-2.70, P =.01). Adoption of CONSORT is recommended as it may lead to an overall improvement in quality of reporting of RCTs in nursing journals. The profession may also wish to explore the use or development of standards similar to CONSORT but ones more appropriate for the types of research typical of that published by nurse scientists.

Is acupuncture analgesia an expectancy effect? Preliminary evidence based on participants' perceived assignments in two placebo-controlled trials.

This purpose of this article is to contrast the analgesic efficacy of acupuncture following dental surgery with the analgesic effects based on the expectation of benefit in two independently conducted placebo-controlled trials evaluating acupuncture as an adjunctive therapy for dental surgery. Both trials used pain following dental surgery as the outcome variable, and both included a blinding check to ascertain patients' beliefs regarding which treatment they were receiving. Although no statistically significant analgesic effect was observed between the acupuncture and placebo groups, participants in both experiments who believed they received real acupuncture reported significantly less pain than patients who believed that they received a placebo. Patients' beliefs regarding the receipt of acupuncture bore a stronger relationship to pain than any specific action possessed by acupuncture. These results also support the importance of both employing credible controls for the placebo effect in clinical trials and evaluating the credibility of those controls.

Larger effect sizes were associated with higher quality ratings in complementary and alternative medicine randomized controlled trials.

OBJECTIVE: To determine if the quality of complementary and alternative medicine (CAM) placebo controlled randomized controlled trials (RCTs) is related to the effect sizes they produce when the type of interventions and outcome variables are controlled. STUDY DESIGN AND SETTING: A sample of 25 CAM meta-analyses was identified from MEDLINE and hand searches containing published effect sizes for at least three efficacy trials employing placebo control groups. From these 25 reviews, 26 pairs of trials were selected: the one reporting the largest effect size and the matching trial reporting the smallest effect size. Quality and publication characteristics were then abstracted from each trial. RESULTS: Unlike the preponderance of past evidence examining the relationship between quality and effect size, the present study found that trials possessing the largest effect sizes within a meta-analysis were also associated with higher quality ratings than their counterparts possessing the lowest effect sizes (P=.019). CONCLUSIONS: Possible theoretical reasons for this unexpected positive relationship include (a) sampling error, (b) reduced within group variation, (c) fraudulent reporting, and (d) the restriction of the analyses to placebo controlled trial.

Safety and efficacy of S-adenosylmethionine (SAMe) for osteoarthritis.

OBJECTIVE: We assessed the efficacy of S-adenosylmethionine (SAMe), a dietary supplement now available in the Unites States, compared with that of placebo or nonsteroidal anti-inflammatory drugs (NSAIDs) in the treatment of osteoarthritis (OA). STUDY DESIGN: This was a meta-analysis of randomized controlled trials. DATA SOURCES: We identified randomized controlled trials of SAMe versus placebo or NSAIDS for the treatment of OA through computerized database searches and reference lists. OUTCOMES MEASURED: The outcomes considered were pain, functional limitation, and adverse effects. RESULTS: Eleven studies that met the inclusion criteria were weighted on the basis of precision and were combined for each outcome variable. When compared with placebo, SAMe is more effective in reducing functional limitation in patients with OA (effect size [ES] =.31; 95% confidence interval [CI],.099-.520), but not in reducing pain (ES =.22; 95% CI, -.247 to.693). This result, however, is based on only 2 studies. SAMe seems to be comparable with NSAIDs (pain: ES =.12; 95% CI, -.029 to.273; functional limitation: ES =.025; 95% CI, -.127 to.176). However, those treated with SAMe were less likely to report adverse effects than those receiving NSAIDs. CONCLUSIONS: SAMe appears to be as effective as NSAIDs in reducing pain and improving functional limitation in patients with OA without the adverse effects often associated with NSAID therapies.

Use and referral patterns for 22 complementary and alternative medical therapies by members of the American College of Rheumatology: results of a national survey.

BACKGROUND: This study was designed to determine rheumatologists' self-reported knowledge, perceptions of legitimacy, referral patterns, and use in practice of 22 complementary and alternative medicine (CAM) therapies. METHODS: A survey was mailed to a random sample of 2000 physician members of the American College of Rheumatology asking respondents which (if any) CAM therapies they (1) knew enough about to discuss with patients, (2) considered part of "legitimate medical practice," and (3) "personally administered" to patients, or "referred patients to someone else" to administer. The response rate was 47%. RESULTS: On average, the respondents reported knowing enough to discuss 10 of the therapies with patients, considered 9 to be part of legitimate medical practice, and had referred patients to someone else for 8 of the 22 therapies. Correlates of use and/or referral included sex, age, belief in the legitimacy of the therapies, and self-reported knowledge. CONCLUSIONS: These results provide potentially important preliminary data regarding rheumatologists' responses to dramatic increases in the use of CAM therapies among their patients.

Commentary: alternative medicine: is it a reflection of the continued emergence of the biopsychosocial paradigm?

The possibility is presented that the current collaborative versus conventional medical debate may be a consumer-driven continuation of the biomedical versus biopsychosocial controversy first proposed by George Engel 25 years ago. If true, we may all be actors in a genuine Kuhnian paradigmatic shift destined to occur whether we appreciate our roles therein or approve of the ultimate outcome. At the very least, however, it is important to recognize the evidence that at least some patients suffering from chronic conditions may be choosing collaborative therapies for different reasons than for those for which they seek conventional medical care. For these patients, at least, it is important that the quality of the collaborative care they receive be judged on outcomes capable of reflecting these alternative objectives. Finally, whether we are in the midst of a paradigmatic shift in medicine or not, it is essential that we all, as providers of clinical care or as investigators of clinical efficacy, adopt a collaborative role to ensure the provision of both good medicine and good science.