HIV-1 risk and vaccine acceptability in the Ugandan military.

Between July and October 1993, 570 19- to 22-year-old volunteers were screened for HIV-1, with a resulting seroprevalence rate of 18.3% (95% CI: 14.0%, 22.6%). A cohort of 249 HIV-1-noninfected military recruits in the Ugandan Peoples' Defense Forces was followed prospectively for up to 18 months to document rates of HIV-1 seroprevalence, seroconversion, and knowledge and attitudes related to vaccine acceptability. The HIV-1 seroincidence rate was 3.56 per 100 person-years (95% CI: 1.49, 5.62) over 309 person-years of observation. At the 3- and 12-month visits, subjects were interviewed on issues of acceptance and knowledge about vaccines, including anti-HIV vaccines in particular. More than 90% believe that HIV vaccines will not cause HIV infection, and if offered, 88% report that they would take the vaccine if they were not already infected. Nonvaccine prevention methods were considered less reliable; monogamy and condom use were considered effective by only 33.5% and 69.3% of the cohort respectively. After completing the vaccine acceptability questionnaire at the 12-month visit, subjects were offered an approved polyvalent meningococcal vaccine as an indicator of general vaccine acceptance. All subjects reported receiving at least one previous vaccination, and 95% willingly accepted the meningococcal vaccination. The Ugandan military is a stable population at substantial risk for HIV-1 infection and may be a suitable population for vaccine efficacy trials.

An assessment of the Health Assessment Questionnaire functional ability index among women with systemic lupus erythematosus.

The validity of the Health Assessment Questionnaire (HAQ) functional ability instrument was tested in 120 women with definite systemic lupus erythematosus (SLE) from rheumatology clinics at 2 local tertiary care institutions. Reliability and validity results for this population of women (mean age: 41 years +/- 13; age at diagnosis 33 years +/- 13) indicate that (1) the HAQ was internally reliable (standardized alpha = 0.9443) with no interitem correlation exceeding (r = 0.75); (2) confirmatory factor analysis identified 2 predominant factors among the HAQ components suggestive of large limb gross movements (e.g., walking, arising) and small limb fine movements (e.g., the ability to eat and firmly grip objects). Cumulatively, the 2 factors accounted for 64% of the variation in HAQ ability response. The HAQ response was also valid when compared to the overall disability index (r = 0.65 to 0.82) and other common disease variables that were reported by the patient and collected by the physician at the time of clinical examination. In addition, when stratified by active and inactive disease as defined by the Lupus Activity Criteria Count, inactive patients reported lower disability components (dress, arise, eat, walk, hygiene, reach, grip and activity) than active patients. These findings confirm the valid use of the HAQ as a measure of disability, when compared with other clinical measures of disease status and activity, in female patients with SLE.

Clinical management of keratoconus. A multicenter analysis.

The clinical management of 746 eyes in 417 patients referred for keratoconus from January 1984 through January 1988 was retrospectively analyzed. In 357 patients, 554 eyes (74%) did not require surgery and were managed with contact lenses or spectacles, 156 eyes (21%) in 137 patients either underwent penetrating keratoplasty (PK) (140 eyes) or surgery was recommended (16 eyes), and 36 eyes (4%) in 34 patients underwent epikeratoplasty. Comparing baseline and final examination findings, the nonsurgical group showed a significant improvement in average best-corrected visual acuity from 20/30 to 20/25, the PK group from 20/70 to 20/25, and the epikeratoplasty group from 20/40 to 20/30. Average keratometry was unchanged in the nonsurgical group, but decreased by 10.7 diopters (D) for the PK group and 6.5 D for the epikeratoplasty group. Corneal cylinder was unchanged in the nonsurgical group, whereas there was a reduction of the percentage of eyes with indeterminant cylinder from 55 to 2% in the PK group and from 36 to 0% in the epikeratoplasty group. Previous contact lens history, best-corrected visual acuity of 20/50 or worse, and average keratometry of 55 D or greater at baseline were associated with a significant risk for PK. No baseline variables were associated with significant risk for epikeratoplasty, suggesting that this group was similar to the nonsurgical group, except for contact lens intolerance. The nonsurgical management of keratoconus continues to play a predominant role in the management of this disorder in a referral population.