Situational factors affecting abstinence from drugs: Panel data analysis of patients with drug use disorders in residential drug use treatment.

Aim: To identify situational factors that can predict drug abstention in patients with drug use disorders undergoing residential drug use treatment.

Methods: Patients with drug use disorders admitted to drug addiction rehabilitation centers (DARCs) in 2016 were involved in this study. Longitudinal panel data were used, with eight follow-up surveys over 6 years, approximately every 6 months.

The NVP QOL Questionnaire: Psychometric properties of the self-report measure of health-related quality of life for nausea and vomiting during pregnancy.

Aim: The Nausea and Vomiting of Pregnancy Quality of Life (NVP QOL) Questionnaire is a self-report measure of health-related QOL for nausea and vomiting during pregnancy. This study determines the best fitting factor structure for the NVP QOL Questionnaire and explores its measurement invariance in terms of observation time and parity.

Methods: A test-retest study of pregnant women was conducted at Gestational Weeks (GWs) 10-13 (T1:  = 381) and 1 week later (T2:  = 128) at one hospital and five clinics with the NVP QOL and the Pregnancy-Unique Quantification of Emesis and Nausea (PUQE).