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Tables 3 and 4 present the findings on effects of preschool vitamin A supplementation on risks of failing screening and hearing loss, respectively.
Differences in risk of failing screening and exhibiting hearing loss in adolescents and young adults in the supplementation groups were estimated by the odds ratio and absolute risk difference.
A median of 45% (range 12% [ 30] to 71% [ 44]) of those approached about the study screened eligible (with the remainder in some studies refusing as well as failing screening).
Compared with placebo, receipt of vitamin A had no overall effect on the risk of failing screening (odds ratio 0.97, 95% confidence interval 0.69 to 1.35; absolute risk difference −0.3%, 95% confidence interval −3.9%to3.2%2%), but seemed to reduce the risk of hearing loss, by 17% (0.83, 0.62 to 1.12; −1.0%, −2.7% to 0.7%).
A few studies in the audiology literature have focused on the self-assessment of hearing loss, 8 immediate reactions to the diagnosis of hearing loss, 9 10 actions taken after failing screening tests, 11 attitudes towards hearing loss and the use of hearing aids 12 13 and the ways in which PHI cope with their condition.
Among participants without reported ear discharge over any of the five four-monthly weekly reports, preschool vitamin A supplementation had no effect on the risk either of failing screening (1.17, 0.78 to 1.76; 1.2%, −1.9%to4.2%2%) or hearing loss (1.07, 0.64 to 1.80; 0.2%, −1.5% to 1.9%).
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"Can you please give us the response and refusal rates for your most recent national poll?": An ARG representative said," For the nationwide survey conducted September 20-22: Total adults contacted: 5,310 Total adults screened: 2,075* Total failing screen or dropping out: 875 Total sample size: 1,200.
Schools were stratified by three variables, information on which was collected during the baseline survey and screening: county; the total number of students in grades 4 and 5; and the number of students failing vision screening in grades 4 and 5. Within each stratum a school was randomly assigned to one of the six treatment arms.
In patients failing hearing screening, exposure to ototoxic medication was assessed in the light of other risk factors for hearing loss.
Compared with the FAS population, patients failing the screening test (n = 60) were younger, had diabetes of shorter duration, had presented more ketoacidosis events, and had lower levels of education (Table 1).
Recent court rulings have also criticised the system for failing to screen out victims of torture and trafficking from the fast-track.
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