Table 4

Independent factors associated with the Saudi public’s knowledge of and attitudes toward clinical trials

CharacteristicsKnowledgeAttitudes
B95% Wald CIP valueB95% Wald CIP value
LowerUpperLowerUpper
(Intercept)48.226.8369.480.001*57.430.7284.010.001*
Gender (reference: female)
 Male–14.1–17.49–10.650.001*–9.2–13.42–4.880.001*
Age (reference: 61+)
 18–309.2–2.8621.310.135–0.8–15.8714.330.920
 31–4011.2–0.5622.920.0623.7–10.9818.340.623
 41–6012.10.8023.440.036*10.6–3.5524.730.142
Education (reference: university, college or higher)
 Not educated–19.6–29.64–9.660.001*–18.4–30.88–5.920.004*
 High school or lower–8.2–12.10–4.370.001*–5.1–9.94–0.290.038*
Monthly income (reference: more than 15 000 SAR)
 No income–9.7–17.17–2.190.011*–1.0–10.388.340.831
 5000 SAR or less–9.1–15.48–2.790.005*0.4–7.508.350.916
 5001 to 10 000 SAR–6.9–12.71–1.000.022*0.0–7.367.280.992
 10 001 to 15 000 SAR–3.6–9.652.380.2361.2–6.288.730.749
Nationality (reference: non-Saudi)
 Saudi–1.6–6.803.630.5521.0–5.527.510.764
Residential area (reference: Eastern region)
 Central region3.6–4.9412.050.412–0.5–11.1410.080.922
 Western region1.9–7.6011.390.696–0.9–12.7311.000.886
 Northern region–10.8–20.77–0.760.035*–12.7–25.19–0.200.046*
 Southern region–1.1–10.898.760.832–5.3–17.616.930.393
Marital status (reference: other)
 Single1.4–6.949.810.736–3.1–13.557.370.563
 Married0.9–6.808.670.813–4.5–14.175.150.360
Employment (reference: housewife)
 Student–5.1–14.083.970.2722.1–9.2113.340.719
 Undergraduate student0.2–8.608.990.9653.7–7.2614.710.506
 Government sector–3.0–11.565.550.4911.0–9.7011.670.857
 Private sector–5.1–13.653.510.247–1.0–11.759.690.850
 Military–10.3–20.56–0.030.049*–0.9–13.7511.890.887
 Private work–6.4–15.542.720.169–2.8–14.188.640.634
 Retired–0.3–11.7311.190.9638.5–5.8622.760.247
 Not working–5.2–14.013.530.2413.5–7.4514.450.531
Health insurance (reference: no insurance)
 Governmental12.94.4821.330.003*10.1–0.4520.600.061
 Private16.57.0625.950.001*4.4–7.4216.180.467
 Other12.84.4921.080.003*7.9–2.5018.220.137
Chronic diseases (reference: yes)
 No–2.2–5.751.270.211–3.5–7.910.870.116
Medical background (reference: yes)
 No–4.7–8.47–0.900.015*–5.0–9.70–0.240.039*
Participated in medical research (reference: no)
 Yes6.0–1.7813.770.1311.7–8.0411.380.736
Knew somebody who had participated in medical research (reference: no)
 Yes12.37.0717.550.001*10.43.8816.970.002*
  • *Significant at α=0.05.

  • SAR, Saudi Arabian riyal.