Bulletin of the World Health Organization

Sensitivity of hospital-based surveillance for severe disease: a geographic information system analysis of access to care in Kilifi district, Kenya

Jennifer C Moïsi, D James Nokes, Hellen Gatakaa, Thomas N Williams, Evasius Bauni, Orin S Levine & J Anthony G Scott

Volume 89, Number 2, February 2011, 102-111

Table 2. All-cause and cause-specific hospitalization rate ratios (RRs) for main effects and interaction effects of travel time to Kilifi District Hospital among children less than 5 years of age, Kilifi district, Kenya, 2004–2006

Models RR (95% CI)
All admissionsa Pneumoniab Suspected meningitisc
Pedestrian (per 60 minutes)
Travel time 0.65 (0.58–0.74) 0.63 (0.57–0.71) 0.62 (0.53–0.73)
Male sex × travel time 1.06 (1.02–1.10)
Maternal educationd 0.5 to < 0.6 × travel time 1.21 (1.03–1.41) 1.26 (1.10–1.45) 1.33 (1.11–1.59)
Maternal education 0.6 to < 0.7 × travel time 1.27 (1.10–1.48) 1.28 (1.12–1.46) 1.40 (1.19–1.64)
Maternal education ≥ 0.7 × travel time 2.40 (1.31–4.42) 1.68 (0.29–9.84) 2.42 (0.83–7.04)
Vehicular (per 30 minutes)
Travel time 0.71 (0.64–0.79) 0.71 (0.64–0.78) 0.75 (0.68–0.83)
Male sex × travel time 1.07 (1.02–1.12) 1.05 (0.97–1.14) 1.11 (1.04–1.18)

CI, confidence interval.

a Final models included main effects of sex, ethnic group, maternal education, migrant status and year and interaction effects of maternal education (pedestrian) or sex (vehicular).

b Final models included main effects of sex, ethnic group, maternal education, migrant status, year and season and interaction effects of maternal education (pedestrian) or sex (vehicular).

c Final models included main effects of sex, ethnic group, maternal education, migrant status, year and season and interaction effects of sex and maternal education (pedestrian) or sex alone (vehicular).

d Categories represent the proportion of women with any education in a child’s sublocation of residence.

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