Tzahit Simon-Tuval

Prof. Tzahit Simon-Tuval

orcid

Research Focus & Metrics

Academic Career Length

25Years (2002-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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7 December 2011 in The European Journal of Health Economics
Verified
Journal Article
Closed access
PDF file
SHSharon Hadad
Sharon Hadad
YHYossi Hadad
Yossi Hadad
TSTzahit Simon-Tuval
Tzahit Simon-Tuval

1 January 2007 in American Journal of Respiratory and Critical Care Medicine
Verified
Journal Article
Closed access
ATAriel Tarasiuk
Ariel Tarasiuk
SGSari Greenberg-Dotan
Sari Greenberg-Dotan
TSTzahit Simon-Tuval
Tzahit Simon-Tuval
BFBruria Freidman
Bruria Freidman
AGAviv D. Goldbart
Aviv D. Goldbart
HRHaim Reuveni
Haim Reuveni
Rationale: Health care use, a reliable measure of morbidity, is noticeably higher 1 yr before obstructive sleep apnea syndrome (OSAS) diagnosis in preschool children. It is not clear at what age OSAS-related morbidity becomes expressed. Objective: To explore morbidity and health care use among children with OSAS starting from first year of life. Methods: Case-control study, starting from the first year of life to date of OSAS diagnosis, among 156 patients (age range, 3–5 yr) and their pair-matched healthy control subjects, by age, sex, primary care physician, and geographic location. Measurements: Patients with OSAS underwent nocturnal polysomnography studies. Medical records during hospital visits were reviewed for diagnosis. Variables of health care use were obtained from computerized databases of Clalit Health Care Services, the largest health maintenance organization in Israel. Main Results: From the first year of life to date of OSAS diagnosis, children with OSAS had 40% more (p = 0.048) hospital visits, 20% more repeated (two or more) visits (p < 0.0001), and higher consumption of antiinfective and respiratory system drugs (p < 0.0001). Referrals of children with OSAS to otolaryngology surgeons and pediatric pulmonologists were higher from Year 1 (p < 0.0001) to date of OSAS diagnosis, especially in Year 4 (odds ratio, 9.4; 95% confidence interval, 4.2–21.1). The 215% elevation (p < 0.0001) in health care use of the OSAS group was due mainly to higher occurrence of respiratory tract morbidity (p < 0.0001). Conclusions: Practitioners should be aware that starting in Year 1 until date of diagnosis, children with OSAS have higher health care use, mostly related to respiratory diseases.

1 February 2004 in Pediatrics
Verified
Journal Article
Closed access
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ATAriel Tarasiuk
Ariel Tarasiuk
TSTzahit Simon-Tuval
Tzahit Simon-Tuval
ATAsher Tal
Asher Tal
HRHaim Reuveni
Haim Reuveni
Objective. To investigate health care utilization of children with obstructive sleep apnea syndrome (OSAS) 1 year after adenotonsillectomy (T&A).

1 July 2002 in Pediatrics
Verified
Journal Article
Closed access
PDF file
HRHaim Reuveni
Haim Reuveni
TSTzahit Simon-Tuval
Tzahit Simon-Tuval
ATAsher Tal
Asher Tal
AEAsher Elhayany
Asher Elhayany
ATAriel Tarasiuk
Ariel Tarasiuk
Objective. Little is known about the effects of obstructive sleep apnea syndrome (OSAS) on utilization of health care services in children. The present study compares medical service utilization by children with OSAS with that of healthy children. Methods. A cross-sectional study of 287 consecutively recruited children (1–18 years) with OSAS and no concomitant diseases and a control group matched by age, gender, and geographic location was conducted at the Clalit Health Care Services clinic in the southern region of Israel. Children in the study group underwent nocturnal polysomnography (PSG) studies. The control group (N = 1149) was randomly selected from the Clalit Health Care Services database. PSG was performed for the OSAS patients. Indices of health care utilization 1 year before the PSG study were analyzed. Results. A 226% increase in health care utilization was noted among children with OSAS. Children up to 5 years of age consumed more health care resources than children over 5 years. Children with OSAS consumed more health care services than the control group at all ages. The leading components of this high cost are utilization of more hospital days, drugs, and visits to the emergency department. The severity of the OSAS correlates directly to total annual costs and independently to age (β = 0.19). Conclusions. Children with OSAS are heavy consumers of health care services 1 year before any specific evaluation and treatment for apnea. Early diagnosis and intervention may be cost-effective.

1 September 2007 in SLEEP
Verified
Journal Article
Open access
PDF file
SGSari Greenberg-Dotan
Sari Greenberg-Dotan
HRHaim Reuveni
Haim Reuveni
TSTzahit Simon-Tuval
Tzahit Simon-Tuval
AOArie Oksenberg
Arie Oksenberg
ATAriel Tarasiuk
Ariel Tarasiuk
To explore gender differences in morbidity and total health care utilization 5 years prior to diagnosis of obstructive sleep apnea (OSA). Case-control study; patients were recruited between January 2001 and April 2003. Two university-affiliated sleep laboratories. 289 women (22–81 years) with OSA were matched with 289 men with OSA for age, body mass index (BMI), and apnea-hypopnea index (AHI). All OSA patients were matched 1:1 with healthy controls by age, geographic area, and primary physician. Women with OSA compared to men with OSA have lower perceived health status and Functional Outcomes of Sleep Questionnaire score (54.5% vs. 28.4%, P <0.05 and 67.5±21.4 vs. 76±20.1, P <0.05, respectively). Compared to men with OSA, women with OSA have higher risk of hypothyroidism (OR 4.7; 95% CI, 2.3–10) and arthropathy (OR 1.6, 95% CI, 1.1–2.2) and lower risk for CVD (OR 0.7; 95% CI, 0.5–0.91). Compared to controls, both women and men with OSA had 1.8 times higher 5-year total costs (P <0.0001). Compared to men with OSA, expenditures for women with OSA are 1.3 times higher (P <0.0001). The multiple logistic regression (adjusting for BMI, AHI) revealed that age (OR 1.04; 95% CI, 1.01–1.07), antipsychotic and anxiolytic drugs (OR 2.3; 95% CI, 1.2-4.4), and asthma (OR 2.4; 95% CI, 1.1–5.6) are independent determinants for “most costly” OSA women. Compared to men with similar OSA severity, women are heavier users of health care resources. Low FOSQ score and poor perceived health status in addition to overuse of psychoactive drugs are associated with high health care utilization among women with OSA

25 January 2008 in Journal of the American Geriatrics Society
Verified
Journal Article
Closed access
PDF file
ATAriel Tarasiuk
Ariel Tarasiuk
SGSari Greenberg‐Dotan
Sari Greenberg‐Dotan
TSTzahit Simon-Tuval
Tzahit Simon-Tuval
AOArie Oksenberg
Arie Oksenberg
HRHaim Reuveni
Haim Reuveni