Table 3. Comparison of four factors between respondents in different groups.
| Variables | Factor 1: SE, median (IQR) |
Factor 2: PC, median (IQR) |
Factor 3: S&D, median (IQR) |
Factor 4 R&Q, median (IQR) |
|---|---|---|---|---|
| Region | ||||
| Eastern (n=1,469) | 3.2 (2.8–3.8) | 3.7 (3.0–4.0) | 3.0 (2.5–3.6) | 3.6 (3.0–4.0) |
| Central (n=596) | 3.4 (2.8–3.8) | 3.7 (3.0–4.0) | 3.1 (2.6–3.7) | 3.6 (3.1–4.0) |
| Western (n=328) | 3.4 (2.8–4.0) | 3.7 (3.0–4.0) | 3.0 (2.5–3.7) | 3.4 (3.1–4.0) |
| U value (P value) | 0.192 (0.662) | 0.122 (0.726) | 2.879 (0.090) | 0.782 (0.377) |
| Age, years | ||||
| 21–30 (n=2,015) | 3.2 (2.8–3.8) | 3.7 (3.0–4.0) | 3.0 (2.5–3.6) | 3.6 (3.0–4.0) |
| Over 31 (n=378) | 3.4 (3.0–4.0) | 4.0 (3.3–4.0) | 3.0 (2.4–3.7) | 3.7 (3.2–4.0) |
| U value (P value) | −1.990 (0.047)* | −2.944 (0.003)* | −1.482 (0.138) | −3.099 (0.002)* |
| Gender | ||||
| Male (n=213) | 3.6 (3.0–4.0) | 4.0 (3.3–4.0) | 3.2 (2.8–3.8) | 3.7 (3.1–4.0) |
| Female (n=2,180) | 3.2 (2.8–3.8) | 3.7 (3.0–4.0) | 3.0 (2.5–3.6) | 3.6 (3.0–4.0) |
| U value (P value) | −3.795 (<0.001)* | −2.619 (0.009)* | −2.347 (0.019)* | −2.253 (0.024)* |
| Respondent | ||||
| CRCs (n=2,147) | 3.4 (2.8–4.0) | 3.7 (3.0–4.0) | 3.0 (2.5–3.6) | 3.6 (3.0-4.0) |
| Non-CRCs (n=246) | 3.4 (3.0–4.0) | 4.0 (3.3–4.0) | 3.0 (2.5–3.7) | 3.7 (3.3–4.0) |
| U value (P value) | −2.429 (0.015)* | −4.343 (<0.001)* | −0.545 (0.586) | −3.840 (<0.001)* |
*, P<0.05, statistically significant. SE, subject enrollment; IQR, interquartile range; PC, patient care; S&D, study supplies and data management; R&Q, research milestones and quality management; CRCs, clinical research coordinators.