Acknowledged statistical help and a better use of p values: a proposal.

OBJECTIVES: The p-value is commonly misused. We hypothesised that a close cooperation with a statistician would go along with a more proper use of p-values. We considered a close cooperation present, when a statistician was a coauthor, or a formal statistical help was acknowledged in a study report. METHODS: Randomised controlled trials published in 2015-16 in 4 widely read rheumatology journals were searched for a close cooperation with a statistician, the inclusion of effect sizes, confidence intervals, exact rather than relative p-values and the omission of p-values in tables depicting trial entry data. RESULTS: There were only 28/133 (21%) articles in which a formal statistical help was acknowledged (Group I). The rest (Group II) gave no acknowledgement of a close cooperation. Reporting of effect sizes (96% vs. 71%) and exact p-values (88% vs. 69%) were more in Group I (p=0.01, and p=0.08, respectively). CONCLUSIONS: While a formal acknowledgement of a close cooperation was notably infrequent at 21%, this went along with improvement in some aspects of p-value reporting. If substantiated by further studies, we propose that a formally acknowledged statistical help should improve p-value reporting. Like all professionals, statisticians would like their name/office to be formally associated with their good work.

Surgical Treatment of Pulmonary Complications in Behçet's Syndrome.

We described disease characteristics, management and outcome of a group of Behçet's syndrome (BS) patients who underwent pulmonary lobectomy, segmentectomy or various pleura interventions for complications due to pulmonary artery or descending aorta involvement. There were 9 patients with BS (8 M/1 F; mean age: 24.8 ±â€¯7.5 and mean disease duration: 4.3 ±â€¯3.8 years) who underwent lung surgery from 2000 to 2017. Their medical files including operation details and radiological and pathological studies were reviewed retrospectively. Lobectomy was done in 6 patients, decortications and pleura interventions in the remaining 3. The reason for the surgical procedures were giant pulmonary arterial aneurysms refractory to the medical treatment (n = 4), pneumothorax due to large cavities (n = 2), pleural effusions refractory to the medical treatment (n = 1), a bronchopleural fistula after embolization (n = 1) and bronchiectasis (n = 1). All patients received medical treatment with cyclophosphamide and corticosteroids before the surgical interventions. The histological examination in patients with pseudo-aneurysms showed destruction of medial elastic fibers, inflammatory cell infiltration of adventitial tissues and penetration into the adjacent bronchi with adherent thrombi. Two patients died: one due to Budd-Chiari syndrome 1 year after the surgery, another because of a massive hemoptysis 3 months after lobectomy. The remaining 7 patients are still alive with a median follow-up of 8 years (inter-quartile range [IQR]: 4-11). Lobectomies in BS patients with giant pulmonary aneurysms refractory to medical treatment can be done with favorable outcome. Also, complications such as large cavities causing pneumothorax, refractory pleural effusions, bronchiectasis, and embolization complications can be managed effectively with surgical interventions.

Exacerbation of Behçet's syndrome and familial Mediterranean fever with menstruation.

OBECTIVES: Menstruation triggers several conditions such as migraine, recurrent aphthous stomatitis and acne vulgaris in healthy individuals. There is evidence that Behçet's syndrome (BS) and familial Mediterranean fever (FMF) may exacerbate during menstruation. The aim is to assess whether BS and FMF patients experience menstrual flares. METHODS: Females of reproductive age with BS and FMF seen consecutively at the outpatient clinic of Cerrahpasa Medical Faculty at Istanbul, as well as apparently healthy hospital workers were studied using a standardised questionnaire. BS patients were asked whether they experienced increased skin-mucosa lesions during the menstrual period. A similar questionnaire assessing this time the frequency of abdominal pain, chest pain and fever attacks was given to the patients with FMF. The healthy controls received both questionnaires. RESULTS: A total of 200 BS patients, 240 FMF patients and 250 healthy controls were studied. The most commonly reported symptom among both BS patients (51%) and healthy controls (62%) was the acneiform lesion. At least 79% patients with FMF reported attacks with menstruation, notably abdominal pain which, majority thought, could be differentiated from dysmenorrhea. Additionally, 76% of healthy controls reported having abdominal pain consistent most probably with dysmenorrhea. CONCLUSIONS: This survey showed that, in 68% of the patients with BS at least one skin mucosa lesion was exacerbated with menstruation, this was most commonly acneiform lesion. Menstruation had a slightly stronger effect on FMF, triggering at least one symptom in 79%. The main limitation of the study was the self-reported assessment methodology.

Infliximab for uveitis of Behçet's syndrome: a trend for earlier initiation.

OBJECTIVES: The prognosis of uveitis in Behçet's syndrome (BS) has improved over decades. Whether this is related to the use of more aggressive management strategies is not known. METHODS: This is a retrospective study of BS patients who received infliximab (IFX) for refractory eye disease between 2003-2015. The patients were divided into two groups according to the date of onset of in IFX treatment as before and after 2013. We compared the two groups in terms of disease characteristics at the onset of IFX treatment and response to treatment. RESULTS: There were 43 patients in the old and 14 patients in the new group. The duration of uveitis and previous immunosuppressive treatment before the initiation of IFX were significantly shorter in the new group compared to the old group (p=0.043 and p=0.028, respectively). The baseline visual acuity (VA) at the initiation of IFX was better in the new group, but this was only significant for the left eye. Treatment with IFX was effective in both groups in preserving VA and this was more pronounced in the new group. Attack frequency under IFX was significantly lower in the new group (p<0.001). CONCLUSIONS: IFX seems to be initiated earlier and also in less severe cases during the course of BS uveitis than before. Despite the few numbers of patients and relatively short duration of follow-up, our results give a hint that this change has improved the outcome.