Table 2.
Reliability Measures for Single Items—Analytical Organizational Properties
| Item | ρx |
 at nj=N/J
|
 Needed for  =0.7 |
N, J | η2 | F Ratio (p-Value) |
|---|---|---|---|---|---|---|
| Knowledge and expertise | ||||||
| Response to rising HIV viral load | 0.063 | 0.184 | 34.7 | 299, 89 | 0.344 | 1.25 (.100) |
| Contraindication for AZT | 0.151 | 0.375 | 13.1 | 299, 89 | 0.407 | 1.64 (.002) |
| When to add fourth drug to regimen | 0.071 | 0.205 | 30.4 | 299, 89 | 0.360 | 1.34 (.046) |
| # determinations for baseline VL | 0.079 | 0.224 | 27.1 | 299, 89 | 0.357 | 1.33 (.052) |
| Resistance, reverse transcriptase | 0.169 | 0.406 | 11.5 | 299, 89 | 0.419 | 1.72 (<.001) |
| Resistance, protease inhibitors | 0.120 | 0.314 | 17.1 | 299, 89 | 0.379 | 1.45 (.016) |
| Self-assessed HIV expertise | 0.279 | 0.563 | 6.0 | 293, 88 | 0.498 | 2.34 (<.001) |
| Infectious disease certification* | 0.557 | 0.763 | 1.9 | 205, 80 | 0.727 | 4.22 (<.001) |
| Time allocation | ||||||
| Hrs/week on patient care | 0.278 | 0.559 | 6.1 | 293, 88 | 0.491 | 2.23 (<.001) |
| … on administration | 0 | 0 | — | 291, 89 | 0.253 | 0.78 (.908) |
| … on teaching/precepting | 0.253 | 0.525 | 6.9 | 286, 88 | 0.472 | 2.04 (<.001) |
| … on research | 0.291 | 0.574 | 5.7 | 292, 89 | 0.500 | 2.30 (<.001) |
| Behaviors with patients | ||||||
| Frequency discuss guidelines | 0 | 0 | — | 297, 89 | 0.286 | 0.61 (.606) |
| Give patients resource info | 0.109 | 0.588 | 19.0 | 297, 89 | 0.383 | 1.47 (0.014) |
| Give patients written materials | 0.115 | 0.302 | 18.0 | 297, 89 | 0.359 | 1.32 (0.054) |
| Educate family/friends of patients | 0.179 | 0.423 | 10.7 | 298, 89 | 0.431 | 1.80 (<.001) |
| Patient load | ||||||
| # outpatients seen per week | 0.648 | 0.860 | 1.3 | 296, 89 | 0.743 | 6.81 (<.001) |
| % of patients seen with HIV | 0.573 | 0.816 | 1.7 | 294, 89 | 0.695 | 5.32 (<.001) |
| # HIV patients in clinician panel | 0.531 | 0.781 | 2.1 | 292, 89 | 0.662 | 4.30 (<.001) |
| Other clinic activities | ||||||
| Participation in clinic decisions | 0.077 | 0.214 | 28.0 | 292, 89 | 0.353 | 1.26 (.093) |
| Use computer for patient care† | 0.461 | 0.706 | 2.7 | 210, 75 | 0.646 | 3.32 (<.001) |
| Use e-mail with patients | 0.363 | 0.648 | 4.1 | 287, 89 | 0.561 | 2.87 (<.001) |
| % HIV patients in clinical trials | 0.348 | 0.630 | 4.4 | 281, 88 | 0.557 | 2.79 (<.001) |
| Clinician practice satisfaction | 0.154 | 0.383 | 12.6 | 296, 88 | 0.406 | 1.64 (.002) |
| On-site access to HIV expert | 0.115 | 0.305 | 17.9 | 300, 89 | 0.408 | 1.65 (.002) |
| Sociodemographic composition | ||||||
| Gender | 0.044 | 0.141 | 50.9 | 322, 90 | 0.303 | 1.13 (.230) |
| White/nonwhite | 0.320 | 0.603 | 5.0 | 287, 89 | 0.539 | 2.63 (<.001) |
| Age | 0 | 0 | — | 298, 89 | 0.282 | 0.93 (.645) |
| Years since MD* | 0.068 | 0.158 | 32.1 | 206, 80 | 0.453 | 1.32 (.081) |
| Physician/nonphysician | 0.196 | 0.452 | 9.5 | 299, 89 | 0.434 | 1.83 (<.001) |
*
Asked only of physicians.
†
Asked only when computer reported available in clinic.