Objective To build an assessment scale for estimation of nosocomial infection risk of patients with chronic benzene poisoning.
Methods Based on the nosocomial infection risk factors of patients with chronic benzene poisoning obtained in the early stage, a risk assessment scale for nosocomial infection of patients was studied with Delphi technique. Totally 100 patients with chronic benzene poisoning were selected to evaluate the reliability and validity of the scale. Then the scale was applied to assess the risk of nosocomial infection of 72 patients with chronic benzene poisoning. These patients were divided into experimental and control groups; 36 cases in the experimental group were given graded prevention according to the risk grade determined by the scale and 36 cases in the control group were given routine preventive infection measures. The incidence of infection and secondary infection in these two groups were compared.
Results The positive coefficient of consultation experts was 100% for both first and second round consultations; the expert authority coefficient was 0.76; the Kendall harmony coefficient at second round consultation was 0.729 (P < 0.05). The three dimensions with 10 items in this scale were basic condition of patients, medical examination and intervention measures. The exploratory factor analysis showed that three common factors were factors of diagnostic index, intervention and individual, which explained 56.89% of total variation and the Cronbach's α coefficient was 0.736. The patients in experimental group had statistically significant lower incidence of both infection and secondary infection(P < 0.05).
Conclusion This scale has a good reliability and validity, it could be used to evaluate the risk of nosocomial infection of patients with chronic benzene poisoning. The use of this scale and adoption of corresponding measures could effectively prevent nosocomial infection.
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