Table 3.
Association between health management information systems and cohort incidence rates, accounting for potential confounders in the relationship
| Site | Covariate | Year | Unadjusted | Adjusted | ||||
|---|---|---|---|---|---|---|---|---|
| IRR | 95% CI | P-value | IRR | 95% CI | P-value | |||
| Walukuba | Effect of cohort incidence* by year | 2011 | 1.01 | 0.42–2.40 | < 0.001 | 0.39 | 0.13–1.19 | < 0.001 |
| 2012 | 2.75 | 2.35–3.21 | 2.67 | 2.23–3.20 | ||||
| 2013 | 4.26 | 3.40–5.34 | 4.37 | 3.45–5.55 | ||||
| 2014 | 21.26 | 10.62–42.56 | 14.13 | 6.70–29.78 | ||||
| Recording | – | – | – | 1.07 | 1.02–1.13 | 0.005 | ||
| HF availability | – | – | – | 0.95 | 0.91–0.99 | 0.017 | ||
| HF accessibility | – | – | – | 0.97 | 0.93–0.99 | 0.042 | ||
| Kihihi | Effect of cohort incidence* by year | 2011 | 3.07 | 2.38–3.97 | 0.017 | 7.18 | 5.38–9.58 | < 0.001 |
| 2012 | 1.83 | 1.63–2.05 | 1.71 | 1.51–1.95 | ||||
| 2013 | 1.45 | 1.40–1.50 | 1.50 | 1.44–1.55 | ||||
| 2014 | 1.51 | 1.47–1.54 | 1.39 | 1.35–1.43 | ||||
| Recording | – | – | – | 0.85 | 0.83–0.87 | < 0.001 | ||
| HF availability | – | – | – | 1.03 | 1.00–1.07 | 0.023 | ||
| HF accessibility | – | – | – | 0.88 | 0.86–0.90 | < 0.001 | ||
| Nagongera | Effect of cohort incidence* by year | 2011 | 1.17 | 1.09–1.26 | < 0.001 | 1.09 | 1.01–1.17 | < 0.001 |
| 2012 | 1.14 | 1.10–1.18 | 1.22 | 1.17–1.27 | ||||
| 2013 | 1.46 | 1.40–1.52 | 1.33 | 1.27–1.39 | ||||
| 2014 | 1.30 | 1.25–1.35 | 1.34 | 1.28–1.39 | ||||
| Recording | – | – | – | 1.01 | 0.99–1.03 | 0.256 | ||
| HF availability | – | – | – | 1.09 | 1.07–1.11 | < 0.001 | ||
| HF accessibility | – | – | – | 0.93 | 0.91–0.94 | < 0.001 | ||
IRR = incidence rate ratio.
*
Cohort incidence rates were age-standardized using the site-specific recruitment population structure as standard population. Other covariates are standardized around their means to obtain the corresponding z-score for each.