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Table 3 Factors associated with inaccurate blood smear malaria microscopy

From: Assessment of the accuracy of malaria microscopy in private health facilities in Entebbe Municipality, Uganda: a cross-sectional study

Variable Inaccurate result n/N (%) Univariate analysis Multivariate analysis
OR (95% CI)a p-value OR (95% CI)a p-value
Age of the patient (years)
 < 5 2/50 (4.0) Reference group Reference group
 5–15 8/42 (19.1) 1.75 (0.24–12.8) 0.58 1.57 (0.22–11.3) 0.66
 ≥ 15 19/229 (8.3) 0.83 (0.14–5.11) 0.84 0.58 (0.10–3.40) 0.55
Sex of the patient
 Female 15/174 (8.6) Reference group Reference group
 Male 14/147 (9.5) 1.26 (0.45–3.49) 0.66 1.13 (0.41–3.09) 0.82
Reported bed-net use
 Yes 24/273 (8.8) Reference group Reference group
 No 5/48 (10.4) 0.95 (0.22–4.14) 0.95 1.06 (0.25–4.51) 0.94
Age of technician (years)
 ≥ 30 2/97 (2.1) Reference group Reference group
 < 30 27/224 (12.1) 9.88 (0.51–191) 0.13 0.53 (0.06–4.60) 0.57
Qualification of microscopist
 Lab technician 14/183 (7.7 Reference group Reference group
 Lab assistant 15/138 (10.9) 1.24 (0.09–16.4) 0.87 0.70 (0.15–3.35) 0.66
Experience of technician (years)
 ≥ 5 5/183 (2.7) Reference group Reference group
 < 5 24/138 (17.4) 5.26 (0.43–63.8) 0.19 9.74 (1.06–89.5) 0.04
Refresher training in malaria microscopy
 Yes 12/152 (7.9) Reference group Reference group
 No 17/169 (10.1) 2.84 (0.20–40.3) 0.44 2.87 (0.22–37.5) 0.42
Patient load in the laboratory
 ≥ 5 patients 7/250 (2.8) Reference group Reference group
 < 5 patients 22/71 (31.0) 38.3 (2.72–539) 0.007 38.8 (9.65–156) < 0.001
Lighting in the laboratory
 Insufficient 17/276 (6.2) Reference group Reference group
 Sufficient 12/45 (26.7) 13.6 (0.35–527) 0.16 2.55 (0.27–24.1) 0.42
Laboratory space
 Insufficient 2/43 (4.7) Reference group Reference group
 Sufficient 27/278 (9.7) 1.21 (0.02–78.5) 0.93 1.33 (0.03–57.4) 0.88
Re-used slides
 Sometimes 14/231(6.1) Reference group Reference group
 Always 15/90 (16.7) 7.26 (0.51–103) 0.14 1.27 (0.11–14.7) 0.85
  1. aAdjusted for repeated observations at the same health facility and by the same laboratory personnel