Health Professionals Survey on Tobacco Use and Cessation Counseling -- Lebanon 2005



Similar documents
Tanzania. Report card on the WHO Framework Convention on Tobacco Control. 29 July Contents. Introduction

WHO PACKAGE OF SIX EVIDENCE-BASED TOBACCO CONTROL MEASURES THAT ARE PROVEN TO REDUCE TOBACCO USE AND SAVE LIVES

Tobacco Questions for Surveys A Subset of Key Questions from the Global Adult Tobacco Survey (GATS) 2 nd Edition GTSS

Tobacco use is one of the chief preventable causes of

"Starting today, every doctor, nurse, health plan, purchaser, and medical school in America should make treating tobacco dependence a top priority.

NCDs POLICY BRIEF - INDIA

Prevalence and Causes of Substance Abuse Among Undergraduate Medical College Students

T obacco use is rising among young adults (aged 18 24

Health Insurance Benefits for Treatment of Tobacco Dependence. Summary

Faculty and Staff Health Promotion

YOUTH DRUG SURVEY CHARLOTTE-MECKLENBURG PUBLIC SCHOOLS

Survey of Wisconsin Renters: Smoking Rules, Attitudes & Preferences

Tobacco Control in India

2009 Mississippi Youth Tobacco Survey. Office of Health Data and Research Office of Tobacco Control Mississippi State Department of Health

SMOKING TOBACCO: SMOKING

VISION MISSION GOAL AND OBJECTIVES

Smoking in Casinos Survey

Saving Lives, Saving Money. A state-by-state report on the health and economic impact of comprehensive smoke-free laws

Education: Certificate:

Independent Evaluation of the Vermont Tobacco Control Program: Annual Report

Public Health s Approach to Youth Marijuana Prevention

Country profile. Slovakia

QUESTION NO. 4. Amendment to Title 15 of the Nevada Revised Statutes. CONDENSATION (Ballot Question)

New Jersey Department of Health. Office of Tobacco Control, Nutrition and Fitness. Request for Applications (RFA)#2

YOU CAN QUIT YOUR TOBACCO USE

Colorado s 2005 Tobacco Tax Increase, Cigarette Consumption, and Tax Revenues

PUBLIC EDUCATION CAMPAIGNS REDUCE TOBACCO USE

Tobacco Use, Exposure to Second Hand Smoke and Cessation Training among Nursing Students: Thailand Global Health Professions Student Survey,

INTRODUCTION. Tobacco Prevention & Cessation Program Substance Abuse and Tobacco Cessation Report - March 2011

Attitudes of Europeans towards Tobacco. Report. Special Eurobarometer. Fieldwork October - November 2006 Publication May 2007

References. Tobacco-Free Schools

Macomb County Office of Substance Abuse MCOSA. Executive Summary

You Can Quit Smoking. U.S. Department of Health and Human Services Public Health Service

NETWORK IMPLEMENTATION GUIDE

Student Health Service FAQs for the Parent and Family Liaison

Country profile. Austria

Maternal and Child Health Issue Brief

How To Insure For Tobacco Dependence

HEALTH INSURANCE COVERAGE FOR TOBACCO DEPENDENCE

S. ll. To prohibit the sale or distribution of tobacco products to individuals under the age of 21. IN THE SENATE OF THE UNITED STATES A BILL

Country profile. Saudi Arabia

Country profile. Bhutan

CASE STUDY Master Tobacco Settlement Agreement A Three State Comparison of the Allocation of Funds

College Smoking Policies and Smoking Cessation Programs: Results of a Survey of College Health Center Directors

SA Health. Smoke-free workplaces. A guide for workplaces in South Australia

Attitudes towards second hand smoke amongst a highly exposed workforce: survey of London casino workers

NEW JERSEY COLLEGES EXPEL TOBACCO

Guide to Health Promotion and Disease Prevention

USE OF CONSUMER PANEL SURVEY DATA FOR PUBLIC HEALTH COMMUNICATION PLANNING: AN EVALUATION OF SURVEY RESULTS. William E. Pollard

Guide to Chronic Disease Management and Prevention

Alcohol & Drug Use. Among Louisiana Public School Students. Youth Risk Behavior Surveillance Surveys 2011 & School Health Profiles Comparison 2010:

A Policy Regarding Misuse of Alcohol and Drugs by Staff and Students

Healthy and Safe School Environment. NA Requires schools to assign staff or adult volunteers to monitor the following: Elementary Schools

Healthy People 2020 and Education For Health Successful Practices for Clinical Health Professions

Position Statement: Nicotine Dependence

The Relationship between Knowledge about Smoking-related Health Risks, Attitudes, Smoking

Health Education School Questionnaire

WHO Europe Ministry of Health European Union

Traci Jarrett, PhD Geri Dino, PhD West Virginia University School of Public Health WV Prevention Research Center and CEO Program, WVCTSI

Smoking Cessation Leadership Center at UCSF and Pfizer Medical Education Group. Request for Proposals (RFP) July 2, 2012

The Role of Nurses in Tobacco Control

Sacramento County Department of Health and Human Services Division of Public Health/Tobacco Education Program (TEP)/Tobacco Control Coalition (TCC)

Achieving a smoke-free hospital: reported enforcement of smoke-free regulations by NHS health care staff

Corporate Health Initiatives: An Overlooked HR Tool

Journal of. Employee Assistance. The magazine of the Employee Assistance Professionals Association VOL. 36 NO. 2 2 ND QUARTER 2006

Assessing the Perceptions and Usage of Substance Abuse among Teenagers in a Rural Setting

TOBACCO CESSATION WORKS: AN OVERVIEW OF BEST PRACTICES AND STATE EXPERIENCES

Outcome of Drug Counseling of Outpatients in Chronic Obstructive Pulmonary Disease Clinic at Thawangpha Hospital

Country profile. Sri Lanka

Tobacco Use in Canada: Patterns and Trends Edition

Who will the policy apply to? Which staff members will be excluded from participating, if any?

GENETICS AND GENOMICS IN NURSING PRACTICE SURVEY

Tobacco Use Among Students Attending Historically Black Colleges and Universities: Prevalence, Patterns and Norms

JOINT NATIONAL CAPACITY ASSESSMENT ON THE IMPLEMENTATION OF EFFECTIVE TOBACCO CONTROL POLICIES IN NORWAY

The American Cancer Society Cancer Prevention Study I: 12-Year Followup

Oral Health Program. Strategic Plan. U.S. Department of Health and Human Services Centers for Disease Control and Prevention

Appendix D. Village School Student Survey Regarding Community Health Problems and Solutions. Village Village

Knowledge Management policy for Health - Service, Education and Research

ISSUEBrief. Reducing the Burden of Smoking on Employee Health and Productivity. Center for Prevention

REDUCING HEALTH INEQUALITIES IN TURKEY WITHIN THE SCOPE OF HEALTH TRANSFORMATION PRORAMME

Alcoholism and Drug Abuse in China By David J. Powell, Ph.D. President, International Center for Health Concerns, Inc.

Models of Health Promotion and Illness Prevention

RNAO Submission on Bill 178: An Act to amend the Smoke-Free Ontario Act. Speaking notes: Standing Committee on General Government.

Competency Statements for Dental Public Health*

CORRELATES OF TOBACCO-USE PATTERN AMONGST ADOLESCENTS IN TWO SCHOOLS OF NEW DELHI, INDIA

THE TEXAS GUIDE TO SCHOOL HEALTH PROGRAMS 713. Chapter 13 HEALTH PROMOTION FOR SCHOOL STAFF. Staff Wellness Programs

First Global Ministerial Conference on Healthy Lifestyles and Noncommunicable Disease Control Moscow, April 2011 MOSCOW DECLARATION PREAMBLE

Country profile. India

Provision of Smoking Cessation by Ontario Dental Health Professionals

Conducting research on road traffic injuries where do I start? Research design, ethics and consent.

Summary. 1 WHO (2013) Country Profile of Capacity and Response to Noncommunicable diseases.

Chapter 13 Patterns of Tobacco Use Among U.S. Youth, Young Adults, and Adults

Democratic People's Republic of Korea

Journal of Asian Scientific Research LIFE IN THE MEDICAL CAREER: PERCEPTION OF PRE-UNIVERSITY STUDENTS

5.14. Alcohol, Drugs and Illegal Substances Statement

A conversation with CDC s Alcohol Program, September 5, 2014

February 18, Dear Cessation Program Provider:

RECOGNITION IN LEBANON Equivalence in Diverse System

Seattle. Health Services

Health and Longevity. Global Trends. Which factors account for most of the health improvements in the 20th century?

Transcription:

Health Professionals Survey on Tobacco Use and Cessation Counseling -- Lebanon 2005 Georges Saade (1) Charles W Warren (2) Nathan R Jones (2) Ali Mokdad (3) Samira Asma (2) (1) Non Communicable Disease Program World Health Organization, Beirut Office Glass Bld. 4 th Floor, Museum Square Beirut, Lebanon. (2) Office on Smoking and Health Centers for Disease Control and Prevention 4770 Buford Highway, NE MS K 50 Atlanta, Georgia 30341 USA (3) Division of Adult and Community Health Centers for Disease Control and Prevention 4770 Buford Highway, NE MS K 50 Atlanta, Georgia 30341 USA 1

Abstract Background. The global burden of disease estimates a doubling in the number of deaths every year attributable to tobacco use, from 5 million in 2005, to over 10 million in 2020. By providing brief and simple advice to patients regarding smoking cessation, health professionals can serve an important role in reducing tobacco use. The purpose of this paper is to describe tobacco use and attitudes towards providing patient counseling regarding smoking cessation among 3rd-year students pursuing advanced health professional degrees in Lebanon. Methods. The Global Health Professionals Survey (GHPS) produces nationally representative estimates for 3 rd year students in dental, medical, nursing, and pharmacy schools. In the Lebanese GHPS, the school response rate was 100% for all 4 disciplines and the student response rate ranged from 64.0% (dental) to 71.9% (pharmacy). The GHPS was conducted during regular lectures and class sessions using a self-administered questionnaire. Results. Current cigarette use ranged from 14.8% for pharmacy students to 31.6% for dental students. Current use of Narguileh ranged from 20.6% for medical students to 44.9% for nursing students. About 8 in 10 students in all 4 disciplines were exposed to secondhand smoke in public places. More than 8 in 10 students in medical, nursing, and pharmacy schools believed that health professionals have a role in giving advice or information on smoking cessation to their patients. More than 9 in 10 students in all 4 disciplines believed that health professionals should receive training on smoking cessation techniques. However, the amount of training ranged from 19.8% for pharmacy students to 43.7% for nursing students. Conclusions. The Ministry of Health, Ministry of Education, health profession schools, public health organizations, and educational institutions should discourage tobacco use among health professionals and work together to develop and implement programs that train all health professionals in effective patient cessation-counseling techniques. 2

INTRODUCTION Health professionals are generally considered to be role models in communities and can contribute to tobacco control efforts by either not smoking or quitting smoking; counseling their patients not to smoke; providing smoking cessation counseling and treatment; or being community advocates for tobacco control (1). Thus, one strategy to reduce the number of smoking-related deaths is to encourage health professionals to become involved in tobacco-use prevention and cessation counseling. There have been a few studies that collected information from health professional students in various countries about their tobacco use and training as cessation counselors; however, these studies did not use a consistent survey methodology or questionnaire (2-7). In response, the World Health Organization (WHO), the U.S. Centers for Disease Control and Prevention, and the Canadian Public Health Association developed and implemented the Global Health Professionals Survey (GHPS) to collect data on tobacco use and training in cessation counseling among health professional students in WHO member states (8). This report includes data from the GHPS conducted in Lebanon in 2005 among 3rdyear students in 4 health profession disciplines (i.e., dentistry, medicine, nursing, and pharmacy). METHODS GHPS is part of the Global Tobacco Surveillance System (GTSS), which collects data through 3 surveys: the GHPS, the Global Youth Tobacco Survey, and the Global School Personnel Survey (8). The GHPS is a school-based study of 3 rd year students pursuing advanced degrees in dentistry, medicine, nursing, or pharmacy. The survey uses a core questionnaire on demographics, prevalence of cigarette smoking and use of Narguileh, knowledge and attitudes about tobacco use, exposure to secondhand smoke (SHS), desire to 3

quit smoking, and training received in counseling patients on smoking cessation techniques. The GHPS was conducted in schools during regular class sessions using an anonymous, selfadministered format for data collection. The GHPS questionnaire was translated in Arabic and back-translated to check for accuracy. The GHPS uses a standardized methodology for selecting schools and students, a consistent data collection process, and uniform data-processing procedures. For the Lebanese GHPS, a census of schools and students was selected which included 3 dental schools, 6 medical schools, 9 nursing schools, and 4 pharmacy schools. The school response rates were 100% in all 4 disciplines, and the student response rates were: dental, 64.0% of 71 students; medical, 69.0% of 243 students; nursing, 68.3% of 343 students; and pharmacy, 71.9% of 171 students. SUDAAN, a software package developed for statistical analysis of correlated data, was used to compute standard errors of the estimates and produce 95% confidence intervals which are shown as lower and upper bounds (9). Statistical differences noted are at the p< 0.05 level. RESULTS Student Characteristics Over 7 in 10 nursing and pharmacy students were females compared to 67.2% of dental students, and 44.5% of medical students. For the dental, nursing, and pharmacy students, over 9 in 10 were aged 19-24. For the medical students, 75.5% were aged 19-24 and 21.2% were 25-29. Prevalence Almost 7 in 10 dental students had ever smoked cigarettes, compared to 6 in 10 medical and nursing students, and over 5 in 10 pharmacy students (Table 1). Male students were significantly more likely than female students to have ever smoked in medical, nursing, 4

and pharmacy schools. Over 7 in 10 nursing students had ever used Narguileh, compared to 6 in 10 dental and medical students, and over 5 in 10 pharmacy students. Male nursing students (80.1%) were significantly more likely than female nursing students (66.8%) to have ever used Narguileh. Current cigarette smoking ranged from 14.8% for pharmacy students to 31.6% for dental students (Table 1). For medical, nursing and pharmacy students, males were significantly more likely than females to currently smoke cigarettes. Current use of Narguileh ranged from 20.6% for medical students to 44.9% for nursing students. Male nursing students (54.3%) were significantly more likely than female nursing students (41.6%) to currently use Narguileh. Current cigarette smoking was significantly higher than current use of Narguileh for male and female medical students. Current use of Narguileh was significantly higher than current cigarette smoking for female nursing and pharmacy students. Exposure to Secondhand Smoke (SHS) About 8 in 10 students in all 4 disciplines were exposed to SHS in public places (Table 2). About than 7 in 10 students in all 4 disciplines supported the idea of banning smoking in restaurants, whereas 4 in 10 students supported banning smoking in discos, bars, or pubs; a rate significantly lower than that for restaurants. Fewer students in nursing schools (36.5%) than in dental (50.6%), medical (51.5%), or pharmacy (48.8%) schools reported that their schools had a ban on smoking in school buildings or clinics. Students attending dental schools (28.8%) were the least likely to report high enforcement of the ban than students in medical, nursing, or pharmacy schools (61.0%, 63.2%, and 64.0%, respectively). Role Model and Training More than 8 in 10 students in medical, nursing, and pharmacy schools believed that health professionals have a role in giving advice or information on smoking cessation to their patients (Table 3). Dental students (71.8%) were significantly less likely than students in the 5

other 3 disciplines to believe health professionals have such a role. More than 9 in 10 students in all 4 disciplines believed that health professionals should receive training on smoking-cessation techniques. However, the percentage of students who received training ranged from 19.8% for pharmacy students to 43.7% for nursing students. DISCUSSION Health professionals who use tobacco send an inconsistent message to patients whom they counsel to quit smoking. Findings from the GHPS conducted in Lebanon show that tobacco use among health professional students is high. Current cigarette smoking ranged from 14.8% for pharmacy students to 31.6% for dental students; while current use of Narguileh ranged from 20.6% for medical students to 44.9% for nursing students. Current cigarette smoking and current Narguileh use among female students in dental and nursing schools was as high or higher than the smoking rate for adult females in Lebanon (30.6%) (10). Current cigarette smoking and current Narguileh use among male students in nursing schools was as high or higher than the smoking rate for adult males in Lebanon (42.3%) (10). These results suggest that Lebanon s tobacco control program needs to be broad and include cigarette smoking and Narguileh use for both males and females. On February 3, 1993 the Lebanon Ministry of Interior issued a decree (Number 1/213) which stated that smoking in hospitals, infirmaries, pharmacies, elevators, theaters, health clubs, public transport, and all educational institutions should be prohibited (11). In Lebanon, a decree issued by a Minister is not legally binding on institutions or individuals; so enforcement of the decree is up to the institutions. Data from the GHPS shows that over 8 in 10 students in all 4 disciplines report exposure to SHS in public places. The data also indicate that half of the dental and medical students report their schools have an official policy banning smoking in school buildings; but enforcement in the dental schools is very low 6

(28.8%) compared to the medical schools (61.0%). Less than half of the students in nursing and pharmacy schools reported that their schools have a policy; but where the policy exists, enforcement is high (over 60%). These findings suggest the Ministry of Health, Ministry of Education, and all educational institutions should work together in support of a national law that, after being passed by Parliament, would be implemented and have strong enforcement provisions. GHPS data from Lebanon show that less than 20% of pharmacy students, about 3 in 10 dental and medical students, and 4 in 10 nursing students received formal training in patient tobacco-cessation counseling, even though more than 90% of the same students wanted this type of training to be included in their formal curricula. The GHPS findings suggest that the Ministry of Health, Ministry of Education, and all academic institutions in Lebanon should work together in developing, testing, and implementing successful patient cessation-counseling training programs for health professionals. The students recognize their responsibility to provide patients with tobacco-cessation counseling and want to be properly trained to do so; however, to date, the majority of students have not received this training. CONCLUSIONS All health profession schools, public health organizations, and education officials should discourage tobacco use among health professionals and work together with the Ministry of Health, Ministry of Education, and all education institutions to strengthen the national tobacco control action plan in Lebanon, with especial emphasis on training all health professionals in effective patient cessation-counseling techniques. Lebanon ratified the WHO Framework Convention on Tobacco Control (WHO FCTC) on December 7, 2005 (12). As a party to the WHO FCTC, Lebanon has an obligation to develop and implement a national action plan to curb tobacco consumption. The GHPS data can serve as part of the 7

evidence base for monitoring and evaluating progress toward meeting the objectives of the WHO FCTC as well as meeting the overall objectives of the tobacco control program in Lebanon. Acknowledgement The GHPS team would like to thank all those who contributed in writing this report, the field coordinator Miss Simone Abou Jaoude and the ten administrators who applied GHPS in Lebanon. 8

References 1. The American Cancer Society and the International Union Against Cancer. Engaging Doctors in Tobacco Control. Tobacco Control Strategy Planning, Companion Guide #2. July 22, 2005. 2. Fiore MC, Bailey WC, Cohen SJ, et al. Treating Tobacco Use and Dependence. Clinical Practice Guideline. Rockville, MD: US Department of Health and Human Services; 2000. 3. Lancaster T, Stread L, Silagy C, et al. Effectiveness of interventions to help people stop smoking: findings from the Cochrane Library. BMJ. 2000;321:355-358. 4. Gupta PC, Ray CS. Smokeless tobacco and health in India and South Asia. Respirology. 2003;8:419-431. 5. Naskar NN, Bhattacharya SK. A study on drug abuse among the undergraduate medical students in Calcutta. J Indian Med Assoc. 1999;97:20-21. 6. Mammas IN, Bertsias GK, Linardakis M, Tzanakis NE, Labadarios DN, Kafatos AG. Cigarette smoking, alcohol consumption, and serum lipid profile among medical students in Greece. Eur J Public Health. 2003;13:278-282. 7. Vakeflliu Y, Argjiri D, Poposhi I, Agron S, Melani AS. Tobacco smoking habits, beliefs, and attitudes among medical students in Tirana, Albania. Prev Med. 2002;34:370-373. 8. Global Tobacco Surveillance System Collaborative Group. Tobacco use and cessation counseling Global Health Professionals Survey, pilot study, 10 countries, 2005. Tobacco Control. 2006;15(suppl 2):ii31-ii34. 9. Shah BV, Barnwell BG, Bieler GS. Software for the Statistical Analysis of Correlated Data (SUDAAN): User s Manual. Release 7.5, 1997 [software documentation]. Research Triangle Park, NC: Research Triangle Institute; 1997. 10. Mackay J, Eriksen M, Shafey O. The tobacco Atlas (2 nd Edition). The American Cancer Society; 2006. 11. Ministry of Interior Decree Number 1/213. February 3, 1993. All Tobacco Legislation in Lebanon is deposited at the Ministry of Finance, 1/8597. 12. World Health Organization (WHO). WHO Framework Convention on Tobacco Control. Geneva, Switzerland: WHO; 2003. Available at: http://www.who.int/tobacco/framework. 9

Table 1 Prevalence of Tobacco Use among Third-Year Dental, Medical, Nursing, and Pharmacy Students by Gender, Lebanon GHPS, 2005 Lifetime Use Current Use Cigarettes Narguileh Cigarettes Narguileh Dental Total 67.4 (60.0-74.0) 65.4 (57.8-72.4) 31.6 (24.4-39.7) 37.3 (30.1-45.1) Male 66.9 (54.1-77.7) 65.5 (56.1-73.8) 34.8 (23.2-48.7) 30.6 (21.0-42.4) Female 67.6 (58.5-75.5) 65.3 (51.7-76.8) 30.0 (21.4-40.3) 40.5 (31.2-50.6) Medical Total 63.0 (59.5-66.4) 65.2 (61.7-68.6) 27.4 (24.3-30.7) 20.6 (17.8-23.6) Male 71.0 (66.5-75.1) 69.3 (64.6-73.6) 35.9 (31.5-40.6) 22.0 (18.3-26.2) Female 52.2 (46.7-57.6) 60.0 (54.5-65.2) 27.4 (24.3-30.7) 18.6 (14.8-23.1) Nursing Total 64.3 (61.2-67.2) 70.2 (67.3-73.0) 26.9 (24.2-29.7) 44.9 (41.8-48.0) Male 81.4 (76.2-85.7) 80.1 (74.9-84.5) 43.0 (37.1-49.1) 54.3 (48.3-60.1) Female 58.7 (55.1-62.2) 66.8 (63.3-70.1) 21.5 (18.7-24.7) 41.6 (38.1-45.2) Pharmacy Total 55.2 (51.0-59.3) 55.4 (51.3-59.4) 14.8 (12.2-17.8) 21.5 (18.4-24.9) Male 73.7 (65.8-80.3) 62.9 (54.7-70.4) 23.8 (17.5-31.4) 21.8 (15.7-29.3) Female 49.6 (44.9-54.3) 53.1 (48.4-57.8) 12.0 (9.4-15.2) 21.4 (17.9-25.4) 10

Table 2: Exposure to Secondhand Smoke (SHS) in public places, attitudes toward banning SHS, and school policy and enforcement regarding SHS, Third-Year Dental, Medical, Nursing, and Pharmacy, Lebanon GHPS, 2005 Exposed to smoke in public places during the past week Dental 77.0 (69.9-82.9) Medical 80.7 (77.8-83.3) Nursing 83.0 (80.5-85.2) Thought smoking should be banned in restaurants Thought smoking should be banned in discos, bars, or pubs Percentage of colleges with an official policy banning smoking in college buildings and clinics Of colleges that had an official policy banning smoking in school buildings and clinics, percentage that enforced it 61.7 (53.7-69.2) 41.3 (33.8-49.2) 50.6 (42.8-58.4) 28.8 (20.1-39.3) 69.6 (66.3-72.8) 46.7 (43.2-50.3) 51.5 (47.9-55.0) 61.0 (56.1-65.7) 68.5 (65.5-71.3) 43.5 (40.5-46.6) 36.5 (33.6-39.6) 63.2 (58.0-68.0) Pharmacy 81.6 (78.2-84.6) 66.8 (62.9-70.5) 47.9 (43.9-52.0 48.8 (44.8-52.9) 64.0 (58.3-69.3) 11

Table 3: Percentage of Third-Year Dental, Medical, Nursing, and Pharmacy Students Who Reported That Health Professionals have a Responsibility to Counsel Patients about Smoking and Cessation, Lebanon GHPS, 2005 Dental Medical Nursing Pharmacy Percentage who thought health professionals have a role in giving advice or information about smoking cessation to patients Percentage who thought health professionals should get specific training on cessation techniques Percentage who learned cessation approaches to use with patients 71.8 (63.9-78.6) 95.2 (91.5 97.4) 32.9 (26.2-40.3) 89.9 (87.6-91.8) 93.8 (91.8-95.3) 29.1 (26.0-32.5) 85.4 (83.1-87.4) 96.4 (94.9-97.4) 43.7 (40.6-46.8) 86.1 (83.0-88.7) 97.1 (95.4-98.2) 19.8 (16.7-23.3) 12