Table 5.
Multiple regression analysis of the factors significantly independently associated with the adjusted scores of the four system-specific domains and the total score (general linear model—multivariate model).
| Dependent Variables (Domain Scores) |
Significant Independent Variables | B | Sig. | 95% Confidence Interval | Observed Power | |
|---|---|---|---|---|---|---|
| Lower Bound | Upper Bound | |||||
| CNS | Survey year | −1.518 | <0.001 | −1.885 | −1.151 | 1.000 |
| NICU type | 0.553 | 0.036 | 0.035 | 1.070 | 0.554 | |
| Sex | 0.423 | 0.045 | 0.009 | 0.837 | 0.519 | |
| CVS | Survey year | −0.760 | <0.001 | 2.583 | 3.671 | 1.000 |
| Expertise level | 0.578 | 0.015 | 0.114 | 1.043 | 0.685 | |
| Respiratory system | Survey year | −2.802 | <0.001 | 3.228 | 5.246 | 1.000 |
| Other systems * | Survey year | −1.258 | <0.001 | 0.783 | 1.719 | 0.999 |
| Total domain sum score | Survey year | −6.337 | <0.001 | 8.560 | 12.569 | 1.000 |
| NICU type | 1.748 | 0.037 | 0.110 | 3.386 | 0.554 | |
| Expertise level | 1.607 | 0.066 | −0.106 | 3.321 | 0.453 | |
Independent variables included in the model: survey years; NICU type (public vs. private); and respondents’ sex, expertise level (certified neonatologists/pediatricians vs. fellows), and years of work in NICU. * “Other systems” includes three items: metabolic and endocrine effects, growth, and deterioration of infants’ general condition; CNS, central nervous system; CVS, cardiovascular system.