TABLE 2.
Regression Results From Ordinal and Binary Logit Models of Centers for Disease Control and Prevention Employee Characteristics: United States, 2002–2006
| 2002, Estimate, b (95% CI) | 2003, Estimate, b (95% CI) | 2004, Estimate, b (95% CI) | 2005, Estimate, b (95% CI) | 2006, Estimate, b (95% CI) | |
| Coefficient estimates from ordinal logit model (dependent variable: GSR grade) | |||||
| No. | 7611 | 7632 | 7640 | 7467 | 7479 |
| Male | 0.43*** (0.34, 0.52) | 0.45*** (0.36, 0.54) | 0.40*** (0.31, 0.49) | 0.37*** (0.28, 0.46) | 0.36*** (0.27, 0.45) |
| Some college | 0.42*** (0.25, 0.59) | 0.32*** (0.14, 0.50) | 0.29*** (0.11, 0.48) | 0.39*** (0.19, 0.59) | 0.35*** (0.16, 0.54) |
| College | 2.80*** (2.62, 2.98) | 2.61*** (2.43, 2.80) | 2.52*** (2.33, 2.71) | 2.58*** (2.38, 2.78) | 2.55*** (2.36, 2.75) |
| Master's degree | 3.88*** (3.69, 4.08) | 3.71*** (3.52, 3.91) | 3.57*** (3.37, 3.77) | 3.62*** (3.41, 3.83) | 3.60*** (3.39, 3.80) |
| Doctoral degree or more | 5.08*** (4.86, 5.30) | 4.85*** (4.63, 5.07) | 4.64*** (4.42, 4.86) | 4.65*** (4.42, 4.88) | 4.62*** (4.39, 4.84) |
| Medical officer | 3.12*** (2.83, 3.41) | 3.01*** (2.72, 3.29) | 2.95*** (2.67, 3.22) | 2.84*** (2.58, 3.11) | 2.86*** (2.60, 3.12) |
| Years of service | 0.10*** (0.09, 0.12) | 0.09*** (0.07, 0.10) | 0.09*** (0.07, 0.10) | 0.09*** (0.07, 0.10) | 0.10*** (0.09, 0.12) |
| Years of service squared | 0.00*** (0.00, 0.00) | 0.00*** (0.00, 0.00) | 0.00*** (0.00, 0.00) | 0.00*** (0.00, 0.00) | 0.00*** (0.00, 0.00) |
| OR estimates from logistic regressions (dependent variable: GSR-14+)a | |||||
| No. | 7611 | 7632 | 7640 | 7467 | 7479 |
| Male | 1.60*** (1.39, 1.83) | 1.69*** (1.48, 1.94) | 1.55*** (1.36, 1.76) | 1.54*** (1.35, 1.74) | 1.51*** (1.34, 1.71) |
| Some college | 0.71 (0.42, 1.22) | 0.76 (0.45, 1.29) | 0.52*** (0.33, 0.82) | 0.64 (0.39, 1.05) | 0.80 (0.49, 1.30) |
| College | 5.26*** (3.37, 8.21) | 5.04*** (3.24, 7.86) | 3.22*** (2.26, 4.60) | 3.91*** (2.62, 5.83) | 4.55*** (3.01, 6.86) |
| Master's degree | 11.96*** (7.64, 18.73) | 10.75*** (6.88, 16.81) | 6.98*** (4.88, 9.99) | 8.03*** (5.36, 12.01) | 9.68*** (6.41, 14.63) |
| Doctoral degree or more | 47.64*** (29.93, 75.83) | 38.79*** (24.48, 61.46) | 23.22*** (15.98, 33.74) | 26.67*** (17.60, 40.40) | 30.82*** (20.16, 47.12) |
| Medical officer | 100.68*** (53.39, 189.83) | 65.03*** (36.14, 117.00) | 107.99*** (53.16, 219.39) | 57.33*** (32.71, 100.47) | 57.29*** (32.20, 101.91) |
| Years of service | 1.12*** (1.09, 1.14) | 1.10*** (1.07, 1.13) | 1.11*** (1.08, 1.13) | 1.11*** (1.09, 1.14) | 1.12*** (1.09, 1.15) |
| Years of service squared | 1.00*** (1.00, 1.00) | 1.00*** (1.00, 1.00) | 1.00*** (1.00, 1.00) | 1.00*** (1.00, 1.00) | 1.00*** (1.00, 1.00) |
| OR estimates from logistic regressions (dependent variable: GSR-15+)b | |||||
| No. | 1564 | 1676 | 1835 | 1941 | 2053 |
| Male | 1.20 (0.95, 1.52) | 1.39*** (1.10, 1.76) | 1.36*** (1.09, 1.69) | 1.33*** (1.07, 1.64) | 1.23** (1.00, 1.50) |
| Some college | 0.78 (0.14, 4.31) | 0.34 (0.06, 2.05) | 0.15*** (0.05, 0.46) | 0.64 (0.20, 2.08) | 0.97 (0.29, 3.16) |
| College | 3.12 (0.89, 10.92) | 2.22 (0.72, 6.86) | 0.39*** (0.19, 0.78) | 1.05 (0.44, 2.51) | 1.56 (0.60, 4.05) |
| Master's degree | 4.30** (1.23, 15.08) | 2.62* (0.84, 8.14) | 0.48** (0.24, 0.98) | 1.29 (0.54, 3.08) | 1.90 (0.73, 4.95) |
| Doctoral degree or more | 6.46*** (1.84, 22.72) | 4.23** (1.36, 13.20) | 0.82 (0.41, 1.67) | 2.18* (0.91, 5.25) | 3.13** (1.20, 8.16) |
| Medical officer | 3.24*** (2.18, 4.81) | 3.17*** (2.15, 4.68) | 3.21*** (2.21, 4.65) | 3.42*** (2.40, 4.88) | 3.67*** (2.62, 5.15) |
| Years of service | 1.06*** (1.02, 1.11) | 1.05** (1.01, 1.09) | 1.05** (1.01, 1.09) | 1.07*** (1.02, 1.11) | 1.07*** (1.03, 1.11) |
| Years of service squared | 1.00 (1.00, 1.00) | 1.00 (1.00, 1.00) | 1.00 (1.00, 1.00) | 1.00 (1.00, 1.00) | 1.00 (1.00, 1.00) |
Note. CI = confidence interval; GSR = General Schedule and related series; GSR-14+ = GSR grades equal to or greater than GS-14; GSR-15+ = GSR grades equal to or greater than GS-15; OR = odds ratio. Age, age squared, and the race/ethnicity variables Black, Hispanic, and Asian/Pacific Islander were included in the regression but are not shown here for the sake of space. Estimates for ancillary parameters in the ordinal logit regressions in the top section are omitted.
a
The reported estimates are the odds ratios for promotion with all other factors held equal.
b
Conditional on GSR-14+.
*P < .1; **P < .05; ***P < .01.