Table 3.
Model results for the effect of intervention on the probability of referral to the base hospital. Models are adjusted for step effects and contain a random effect for vision center (cluster). N=1447 total patients.
| Outcome | Overall | Urgent | Non-Urgent | |||
|---|---|---|---|---|---|---|
| # referred | OR (95% Cl) p-value |
# referred | OR (95% Cl) p-value |
# referred | OR (95% Cl) p-value |
|
| Referral Due to Fundus Photography | 112 | 2.07 (0.98, 4.40) p=0.0581 |
21 | 2.21* (0.35, 14.03) p=0.4002 |
90 | 1.93 (0.86, 4.37) p=0.1130 |
| Referral Due to Technician Exam | 373 | 1.05 (0.71, 1.56) p=0.7924 |
28 | 1.44 (0.41, 5.05) p=0.5681 |
343 | 1.00 (0.67, 1.48) p=0.9855 |
| Referral for Any Reason | 485 | 1.21 (0.83, 1.77) p=0.3198 |
49 | 1.97 (0.71, 5.48) p=0.1920 |
433 | 1.10 (0.75, 1.62) p=0.6339 |
OR, Odds Ratio; CI, Confidence Interval
*
due to the small number of referral events, the generalized linear mixed model would not converge as parameterized, simple logistic regression results reported; note: sample sizes do not sum to overall number referred due to missing data on urgency of referral.