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Biomedical subjects

Niaman Nazir

Publications and source records attributed to Niaman Nazir.

At least 19 recordsLinked to original sources
PubMed2006

Confirmatory factor analysis of the child-feeding questionnaire among parents of adolescents.

We investigated the validity of the child-feeding questionnaire (CFQ) among parents of adolescents. The original CFQ was developed to assess perceptions of obesity-proneness and child-feeding practices among parents of 2- to 11-year-old children. We modified the CFQ to make it applicable to parents of adolescents and added one item on monitoring sugared beverages. Confirmatory factor analysis was conducted using the latent variable approach. Factor scores were related to adolescent body mass index percentiles (BMI%) using structural equation modeling. The modified CFQ was completed by 260 parent/guardians (mean age 39.8 years; 92% female; 55% Black, 35% White, 10% Other). The original published measurement model was fit to our sample and yielded an acceptable fit (CFI = 0.95, TLI = 0.93, RMSEA = 0.05). Adding the extra variables decreased the fit; however, minor modifications improved the fit without changing the factor structure (CFI = 0.95, TLI = 0.94, RMSEA = 0.05). Cronbach's alphas for the subscales ranged from 0.60 to 0.88. The factors, parental perceptions of child weight, concern for child weight, monitoring and restriction were positively associated, and pressure to eat was inversely associated with adolescent BMI%. In conclusion, the psychometric properties of the modified CFQ tested among parents of a multi-ethnic adolescent sample were similar to those of the original CFQ.

Adolescent↗
PubMed2006

Fruit, vegetable, and fat intake among non-Hispanic black and non-Hispanic white adolescents: associations with home availability and food consumption settings.

OBJECTIVE: This study sought to explore home food availability and common settings of food consumption as correlates of fruit, vegetable, and fat intake among a sample of non-Hispanic black and non-Hispanic white adolescents. PARTICIPANTS AND DESIGN: Adolescents (n=144 black, 84 white) and their parents completed a cross-sectional survey in an urban adolescent health clinic. The adolescent survey included screening measures for fruit, vegetable, and fat intake and items on frequency of eating meals with family, while watching television, and at three types of restaurants. Parents provided information on home availability of foods. MAIN OUTCOMES: Correlates of fruit, vegetable, and fat consumption. STATISTICAL ANALYSIS: Spearman correlations for associations among variables, t tests for mean comparisons, and multiple stepwise regression conducted separately for black and white adolescents. RESULTS: In multiple regression, home availability was not significantly associated with fruit, vegetable, or fat intake except for fruit intake among white adolescents only. Use of non-fast-food restaurants was the strongest positive predictor of vegetable intake. For both black and white adolescents, fast-food and buffet restaurant use and eating while watching television were the strongest predictors of fat intake. CONCLUSIONS: Compared with restaurant use and eating while watching television, home availability had a relatively small impact on fruit, vegetable, and fat consumption for both black and white adolescents. Intervention programs on adolescent nutrition should target not just availability of healthful foods, but also ease of access, such as the preparation of fruits and vegetables so that they are flavorful and ready to eat.

Adolescent↗
PubMed2006

Correlates of home smoking restrictions among rural smokers.

The prevalence of smoking is greater and smoking restrictions are less common in rural areas in comparison to urban areas. Consequently, rural smokers and their families are at increased risk for adverse health consequences from smoking. The presence of home smoking restrictions (i.e., limiting or banning cigarette smoking in the home) can be a mediator for smoking cessation and can reduce health risks for those who live with smokers. The purpose of the present study was to identify correlates of home smoking restrictions among rural smokers. We surveyed 472 smokers from 40 rural Kansas primary care practices who were enrolled in a smoking cessation intervention study. We assessed the prevalence of home smoking restrictions and examined the relationship between such restrictions, demographic variables, comorbid diagnoses, and psychosocial measures of smoking abstinence self-efficacy and motivation to quit. Complete home smoking restrictions were found among 25.4% of rural smokers with an additional 28.3% reporting some restrictions. Restrictions were associated with younger age, higher controlled motivation to quit (i.e., motivation from external pressure), the presence of children under age 6 years living in the home, fewer friends who smoke, and a partner who does not smoke. Smokers with a comorbid diagnosis of high cholesterol, chronic lung disease, or heart disease were less likely to have restrictions. Most smokers in rural primary care practices do not have home smoking restrictions, particularly those without children or a nonsmoking partner and those with significant risk factors for smoking-related illnesses. These patients may be critical targets for broaching issues of home smoking restrictions.

Adult↗
PubMed2005

An empirical chart analysis of the suitability of telemedicine for hospice visits.

Telehospice (TH) utilizes telemedicine technology to provide care at the end of life. A bistate project was launched in 1998 to study the use of home-based telemedicine for routine hospice care. Videophones were deployed for telenursing visits and evaluations by social workers. In order to determine what proportion of home hospice visits could be performed using currently available telemedicine technology, we reviewed clinical records retrospectively for hospice nurse home visits. Clinical notes documenting home nursing visits were obtained from two large hospices, one based in Kansas, and the other in Michigan. Records were randomly selected for patients who received hospice nurse visits during the month of January 2000. The charts were reviewed for patient demographic information, patient assessments, teaching activities, and interventions. Five hundred ninety-seven nursing notes were analyzed using an 85-item coding instrument. After careful review of the records, the coders also made a subjective observation regarding the suitability of each visit for telemedicine. As part of this analysis, we found that 64.5% of home hospice nursing visits could be performed by telemedicine. Using TH, it is possible to reduce the number of in-person visits, thereby significantly decreasing the cost of providing hospice care.

Empirical Research↗
PubMed2004

Reading nutrition labels and fat consumption in adolescents.

We studied the relationship between reading nutrition labels and percent calorie intake from fat. In adolescent boys, reading nutrition labels was associated with higher fat intake. In girls, fat intake did not differ by frequency of nutrition label reading. Nutrition label reading does not translate into healthier diet in adolescents.

Adolescent↗
PubMed2004

Direct observation of physician counseling on dietary habits and exercise: patient, physician, and office correlates.

BACKGROUND: This study documented the frequency and correlates of directly observed physicians' counseling on dietary habits and exercise in private medical practices. METHODS: Trained medical students observed physician, office, and patient characteristics in 4344 patient visits in 38 nonmetropolitan primary care physician offices. RESULTS: Counseling rates ranged from 0% in some offices to 55% in others. Physicians counseled patients on dietary habits in 25% of visits and exercise in 20% of visits. Physicians counseled new patients 30% more often than established ones (P < 0.05). Dietary counseling was associated with having dietary and exercise brochures in the office (P < 0.05). When counseling occurred, physicians (rather than patients) initiated both dietary and exercise counseling 61% of the time. Counseling for dietary habits was associated with counseling for exercise (P < 0.05); some physicians may be more likely to give preventive counseling. Counseling was not associated with physicians' age, years in practice, or number of patients per week. CONCLUSION: Physician counseled patients in 20-25% of visits, and this was not affected by physician characteristics. Results suggest that physician counseling protocols and other office prompts should be developed and promoted. Strategies targeting both physician and the health care system may improve the consistency of physician preventive counseling practices.

Counseling↗
PubMed2004

Use of a brief Smoking Consequences Questionnaire for Adults (SCQ-A) in African American smokers.

Purposes of the present study were to (a) examine psychometric properties of a brief Smoking Consequences Questionnaire-Adult (SCQ-A) among an African American sample and (b) explore differences in smoking expectancies across levels of smoking-nicotine dependence. Four hundred eighty-four smokers attending an urban health clinic completed the brief SCQ-A. Maximum likelihood factor extraction with a varimax rotation specifying 9 factors replicated 9 factors of the original SCQ-A. Evidence for the brief SCQ-A's reliability and validity was found. Heavier and/or more dependent smokers had significantly higher scores than lighter and/or less dependent smokers on positive expectancies SCQ-A subscales. Results suggest the brief SCQ-A may be a useful alternative to the full scale SCQ-A. Results also provide evidence for the SCQ-A's validity with African American smokers.

Adult↗
PubMed2004

Office systems and their influence on mammography use in rural and urban primary care.

CONTEXT: Breast cancer screening rates are lower in rural communities. Although studies have addressed barriers to mammography for rural residents, physician practice barriers have received less attention. PURPOSE: Controlled clinical trials have shown that the use of office reminder systems in primary care practices is related to increased clinical care rates. Therefore, we compared office systems use in primary care practices located in rural and urban communities and assessed the impact of these systems on rural-urban differences in mammography utilization. METHODS: We identified female Kansas Medicare beneficiaries aged 65 to 79 from Medicare claims data (N = 24,030) and determined which beneficiaries received a mammogram between April 1, 1999, and March 31, 2001. We linked beneficiaries to their primary care providers and obtained surveys from 180 primary care practices on their use of office reminder systems. FINDINGS: Mammography rates ranged from 20% to 92% (mean = 65%) among the 180 practices. Flowsheets with a mammography prompt were used by 33% of the practices, 38% utilized nonphysician staff to identify women due for mammograms, and 15% used computerized reminder systems. Urban practices used flowsheets more often than rural practices (44% versus 16%, P < 0.001). A multivariable regression model demonstrated higher mammography rates in urban practices, group practices, and practices using mammography flowsheets. CONCLUSIONS: Despite success in randomized controlled trials, reminder systems are not used often by primary care providers and are used even less often in rural compared to urban practices. Consistent implementation may be a major barrier to the successful adaptation of flowsheets by primary care offices.

Aged↗
PubMed2004

Cigarette smoking among marijuana users in the United States.

The vast majority of drug users smoke cigarettes. Most use marijuana and no other illicit drug. We analyzed adult responses to the 1997 NHSDA (n = 16,661) to explore relationships between marijuana use and cigarette smoking. Multivariate analyses controlled for other illicit drug use and other potential covariates. Nearly three-quarters of current marijuana users (74%) smoked cigarettes. Compared to nonusers, the adjusted odds of being a smoker were 5.43 for current marijuana users, 3.58 for past year marijuana users, and 2.02 for former marijuana users. Odds for cigarette smoking among current poly-drug users, compared to nonusers, were 2.3 to 1. Level of cigarette smoking was directly associated with frequency of marijuana use. Nationwide, an estimated 7 million adults smoke both substances and are at increased risk for respiratory illnesses and mortality. Cigarette smoking is a major co-morbidity of marijuana use and smoking cessation should be addressed among marijuana users in addition to their other illicit drug involvement.

Adult↗
PubMed2004

Differences in smoking and quitting experiences by levels of smoking among African Americans.

BACKGROUND: Despite smoking fewer cigarettes per day than their White counterparts, African Americans have higher tobacco-related morbidity and mortality. Since most tobacco control efforts have focused on heavy smokers, little is known about smoking and quitting experiences of African-American occasional and light smokers. METHODS: We conducted a survey of 484 African-American smokers, which included: 104 occasional (smoked in < or = 25 of last 30 days), 176 light [smoked 1-10 cigarettes per day (cpd)], 69 moderate (11-19 cpd), and 135 heavy (> or = 20 cpd) attending an inner-city clinic. The survey assessed their sociodemographic characteristics, smoking characteristics, and cessation experiences. RESULTS: Compared with moderate and heavy smokers, occasional and light smokers were, on average, younger, more likely to be female, and more likely to initiate regular smoking at an older age. Forty percent of occasional smokers used other tobacco products compared to 23.3%, 24.6%, and 27.4% for light, moderate, and heavy smokers, respectively. Motivation and confidence to quit were higher among occasional and light smokers. Interest in participating in a formal cessation program was equally high in all 4 groups (mean ranged from 7.6-8.0 on a scale of 1-10). The use of pharmacotherapy for smoking cessation was similar, and generally low, among all 4 groups. CONCLUSIONS: High levels of motivation for smoking cessation exist among African-American occasional and light smokers. The interest of these lighter smokers in smoking cessation represents a window of opportunity to design programs for a group that has been excluded from most cessation interventions.

Adult↗
PubMed2004

African-American menthol and nonmenthol smokers: differences in smoking and cessation experiences.

BACKGROUND: Despite smoking fewer cigarettes per day, African Americans have lower cessation rates and experience disproportionately higher rates of smoking-related health consequences. Because of their high preference for menthol cigarettes, it has been suggested that smoking menthol cigarettes may contribute to the excess smoking-related morbidity experienced by African Americans. Smoking menthol cigarettes could increase health risks from smoking if smokers of menthol cigarettes have lower cessation rates and thereby have longer duration of smoking compared to smokers of nonmentholated cigarettes. Few studies have examined associations between smoking of mentholated cigarettes and smoking cessation among African Americans. This study examined the smoking patterns of menthol cigarette smokers and their smoking cessation experiences. METHODS: A cross-sectional survey of 480 African-American smokers at an inner-city health center. Survey examined sociodemographics, smoking characteristics, and smoking cessation experiences of participants. Menthol smokers (n = 407) were compared to nonmenthol smokers (n = 73) in these characteristics. RESULTS: Menthol smokers were younger and more likely to smoke cigarettes with longer rod length, with filters, and those high in nicotine and tar. Although both groups did not differ by number of past quit attempts, time since most recent quit attempt was shorter for menthol smokers. The durations of most recent and longest-ever quit attempts were nonsignificantly shorter for menthol, compared to nonmenthol smokers. CONCLUSIONS: These data suggest that African-American menthol smokers are less successful with smoking cessation. Prospective studies are needed to confirm these findings and examine mechanisms underlying such differences.

Adolescent↗
PubMed2003

Depressive symptoms and smoking cessation among inner-city African Americans using the nicotine patch.

This study examined the relationship between depressive symptoms and smoking cessation among a sample of inner-city African American smokers using the nicotine patch. Analyses were conducted on data from a previous randomized trial that tested the effects of culturally sensitive vs. standard self-help quitting materials. The study sample consisted of 498 African American smokers (mean age = 42.95, SD = 10.40; 60% female) recruited from a large hospital. Participants in both groups received 8 weeks of nicotine replacement therapy. Level of smoking, quit status, and depressive symptoms (Medical Outcomes Survey Short Depression Screen) were assessed at baseline, week 4 (mid-treatment), and 6-month follow-up. Analyses that controlled for randomization group generally did not support the hypothesis that baseline levels of depressive symptoms predict smoking at Week 4 or Month 6. Cross-sectional analyses at each time point indicated that depressive symptoms were positively associated with smoking level (both: beta = 0.24, p < .05). Changes (increases) in depressive symptoms from baseline to week 4 predicted higher smoking levels at follow-up (beta = 0.19, p < .05). Although the results indicated a significant association between depressive symptoms and level of smoking, they generally did not support the notion that depressive symptoms are associated with failure to quit.

Administration, Cutaneous↗
PubMed2002

A population-based study of cigarette smoking among illicit drug users in the United States.

AIMS: People who use illicit drugs are thought to have high rates of cigarette smoking; however, few population-based studies have been reported. We describe smoking patterns among illicit drug users, assess whether cigarette smoking is more prevalent among illicit drug users than it is among non-users and explore how smoking relates to level and type of drug use. DESIGN, SETTING, PARTICIPANTS: We used adult responses to the 1997 National Household Survey on Drug Abuse (n = 16 661). Multivariate analyses used SUDAAN to adjust standard errors for the sampling design and controlled for age, race, sex, education, depression, treatment history and alcohol. MEASUREMENTS: Smoking rates, cessation rates and smoking levels. FINDINGS: Seventy-one per cent of recent illicit drug users smoked cigarettes at least once in the past month. Their adjusted odds of being a smoker were much greater than for the general population (OR = 3.07, P < 0.0001). Their quit rate, although substantial, was half that of non-users (23% versus 56%, P=0.0001). Odds of being a smoker were higher for poly- versus monodrug users (OR = 2.35, P=0.0020) and rose with increased drug use (OR = 1.36, P=0.0374). Illicit drug users who perceived smoking to be risky were four times less likely to smoke (OR = 0.23, P=0.0008). CONCLUSIONS: Although most recent illicit drug users smoke, some are able to quit. Better understanding of concurrent cigarette and illicit drug use may provide impetus for policy change and shed light on underlying mechanisms of addiction. Clinicians, policy makers and user advocates should address tobacco use in drug treatment and in harm reduction interventions.

Adolescent↗
PubMed2002

Smoking characteristics of a homeless population.

When addressing tobacco control and smoking cessation measures, the homeless have been perceived as a difficult to reach population. The purpose of this study was to examine the smoking characteristics of a homeless population. Data were derived from a larger study that examined smoking among inner-city residents. Homeless smokers (n = 107) were compared to nonhomeless smokers (n = 491) on sociodemographics, smoking characteristics, motivation to quit, and smoking cessation experiences. Results showed that homeless smokers were more likely to be white, smoke more cigarettes per day, initiate smoking at a younger age, and have a longer smoking history. Knowledge about the risks of smoking and the benefits of quitting was equally high in both groups. Homeless smokers were less likely to be preparing to quit smoking compared to nonhomeless smokers. These factors place homeless smokers at increased risk of tobacco-related diseases. Programs are needed to design and test effective cessation interventions for homeless smokers.

Adolescent↗
PubMed2002

Smoking reduction practices among African American smokers.

Despite smoking fewer cigarettes per day than Caucasians, African Americans bear a disproportionate share of health consequences of smoking. Because the risk of many tobacco-related diseases is dose-dependent, smoking reduction has been suggested as a method to reduce harm for smokers. Little information exists about behavioral smoking-reduction strategies and whether such strategies result in smoking fewer cigarettes. We conducted a survey of 484 African American smokers classified as occasional, light, moderate, and heavy smokers. The survey examined sociodemography, smoking characteristics, and eight smoking reduction strategies, including intentional limiting of smoking, smoking less than half of a cigarette, setting a daily limit for smoking, changing cigarette brand, reducing number of cigarettes, smoking only on some days, switching to a lighter tar cigarette, and not inhaling deeply. Compared to moderate and heavy smokers, occasional and light smokers were more likely to have engaged in most of these strategies. Smokers who used >or= 4 strategies on average smoked 11 cigarettes per day (cpd), compared to 14 cpd and 18 cpd for those who used 1 to 3 strategies and no strategies respectively (p <.0001). After analyses controlled for age, gender, and education, the number of smoking reduction strategies utilized was a significant predictor of smoking 10 or fewer cigarettes per day. This study provides evidence that African American smokers who engaged in multiple smoking reduction strategies smoked fewer cigarettes per day. Smokers not interested in quitting but willing to reduce their smoking should be encouraged to utilize a variety of smoking reduction strategies.

Adult↗
PubMedDate not supplied

Assessing overweight, obesity, diet, and physical activity in college students.

The authors surveyed 738 college students aged 18 to 27 years to assess overweight, obesity, dietary habits, and physical activity. They used BMI (body mass index) > or = 25 kg/m2 or BMI > or = 85th percentile and BMI > or = 30 kg/m2 or BMI > or = 95th percentile to estimate overweight and obesity in those aged < or = 19 years. To define overweight and obesity in those > or = 20 years, they used BMI > or = 25 kg/m2 and > or = 30 kg/m2. They found overweight rates of 21.6% using BMI directly and 16.2% using BMI percentile and obesity rates of 4.9% using BMI directly and 4.2% using BMI percentile. More than 69% of the participants reported < 5 servings of fruits and vegetables per day and more than 67% reported < 20 g of fiber per day; participants reported physical activity on fewer than 3 d/wk. Most college students are not meeting dietary and physical activity guidelines, suggesting the need for prevention interventions and increased understanding of overweight in college students.

Adolescent↗
PubMedDate not supplied

Variations in diabetes care and the influence of office systems.

Although a variety of office tools have been shown to improve diabetes care, the use and effectiveness of these tools outside the context of clinical trials is largely unknown. We surveyed primary care practices in Kansas. Using Medicare claims, we identified patients with diabetes, linked them to practices, and assessed the use of glycohemoglobin (GHb) tests, eye examinations, and lipid profiles. Performance rates among practices ranged from 15% to 100% (mean = 84%) for GHb tests, 20% to 100% (mean = 70%) for lipid profiles, and 50% to 100% (mean = 78%) for eye examinations. None of the practices used computerized tracking systems, 29% used diabetes flowsheets, and 33% allocated specific diabetes care responsibilities to nonphysician personnel. Neither use of flowsheets nor use of nonphysician personnel was associated with improvements in diabetes care. Although practices varied widely in their care of patients with diabetes, as currently implemented, office system tools have not led to consistently better performance.

Adult↗