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. Author manuscript; available in PMC: 2019 Nov 29.
Published in final edited form as: Vaccine. 2018 Nov 3;36(50):7618–7624. doi: 10.1016/j.vaccine.2018.10.091

Table 2:

Hazard Ratios for time to next infection among originally uninfected participants, Cox Proportional Hazards Regression. Results were stratified by ethnicity.

Variable Univariate HR (95% CI) P Value Adjusted HR (95% CI) P Value
age 0.93 (0.87–0.99) 0.026 0.93 (0.87–1.00) 0.037
J8 0.99 (0.96–1.02) 0.480 1.00 (0.97–1.03) 0.940
school
    urban reference reference
    rural 1 1.51 (0.86–2.65) 0.150 1.47 (0.83–2.59) 0.180
    rural 2 1.70 (1.03–2.82) 0.038 1.64 (0.97–2.77) 0.060