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Table 2 Unadjusted (uOR) and adjusted odds ratios (aOR) and their respective 95% confidence intervals (95% CIs) for the relationship between characteristics of study population and needlestick and sharp injury (NSI) experience

From: Prevalence and associated factors for needlestick and sharp injuries (NSIs) among dental assistants in Jeddah, Saudi Arabia

Characteristic Category Unadjusted odds ratios Adjusted odds ratios
uOR 95% CI p value aOR 95% CI p value
Number of clinics worked One 1.00    1.00   
Two 1.47 0.78–2.77 0.2283 1.26 0.64–2.49 0.5009
3 or more 1.00 0.64–1.57 0.9943 1.00 0.61–1.62 0.9877
Daily working hours > 8 h 1.00    1.00   
8 h or less 1.60 0.97–2.64 0.0685 1.46 0.82–2.58 0.1949
Number of patients attended per day > 12 1.00    1.00   
12 or less 1.55 1.02–2.36 0.0398* 1.63 1.03–2.56 0.0358*
Years of experience > 3 years 1.39 0.93–2.10 0.1095 1.48 0.95–2.31 0.0853
3 years or less 1.00    1.00   
Performing procedures carrying high risk No 1.00    1.00   
Yes 1.14 0.74–1.74 0.5571 1.29 0.82–2.04 0.2646
Anti-hepatitis B vaccination No 2.31 1.34–3.96 0.0024* 1.89 1.05–3.41 0.0333*
Yes 1.00    1.00   
Wore gowns, mask, and gloves No 1.60 0.95–2.69 0.0750 1.37 0.67–2.79 0.3886
Yes 1.00    1.00   
Used eye and facial protection No 1.61 0.97–2.65 0.0629 1.14 0.60–2.18 0.6834
Yes 1.00    1.00   
Used protective films No 1.20 0.69–2.10 0.5202 0.83 0.43–1.58 0.5642
Yes 1.00    1.00   
Used disposable burs No 1.37 0.91–2.06 0.1282 1.20 0.77–1.88 0.4239
Yes 1.00    1.00   
Used high-volume suction No 1.59 0.82–3.11 0.1717 1.14 0.54–2.42 0.7288
Yes 1.00    1.00   
Recapped needles by one-hand technique No 1.87 0.90–3.87 0.0938 1.59 0.69–3.62 0.2732
Yes 1.00    1.00   
Knowledge of infection control procedures and disease transmission Good 1.00    1.00   
Poor 2.10 1.36–3.23 0.0007* 1.87 1.18–2.97 0.0082*
Formal infection control training No 1.15 0.72–1.83) 0.5500 0.86 0.52–1.45 0.5778
Yes 1.00    1.00   
Infection control unit in the clinic No 2.31 1.53–3.51 < 0.0001* 2.28 1.45–3.57 0.0003*
Yes 1.00    1.00   
  1. *p values reported were significant based on significance level of 0.05
  2. Reference category for the variable