Table 4.
Logistic Regression Testing Likelihood of Any Referral to Maternal Fetal Medicine Specialists
| Characteristic | FP or GP O.R. (95% C.I.) |
Health Dept with MD O.R. (95% C.I.) |
Health Dept only O.R. (95% C.I.) |
OB O.R. (95% C.I.) |
|---|---|---|---|---|
| Total number of conditions noted | 0.80 (0.62,1.04) | 1.01 (0.84, 1.22) | 0.52 (0.39, 0.69) | 0.91 ( 0.80, 1.04) |
| Specific Condition (reference is anemia, shown by order of magnitude for OB) | ||||
| Plurality > 2 | <0.001 (<0.00, >999.99) | 4.309 0.762, 24.381 | (no cases) | 27.73 (7.30, 105.24) |
| Suspected fetal abnormality | 30.83 (21.60,44.00) | 32.26 (25.24, 41.22) | 37.56 (24.81, 56.85) | 24.93 (21.06, 29.51) |
| Oligohydramnios | 6.292 (0.39, 101.05) | 4.61 (1.13, 18.85) | 8.92 (1.37, 58.15) | 16.54 ( 6.76 40.48) |
| Polyhydramnios | 2.12 (0.55, 8.21) | 7.67 (3.34, 17.63) | 8.30 (3.02, 22.86) | 7.34 (4.21, 12.80) |
| HIV infection | 3.10 (0.52, 18.41) | 1.86 (0.21, 16.61) | 32.53 (2.03, 520.44) | 5.06 (2.10, 12.22) |
| Cervical insufficiency | 5.26 (1.89, 14.61) | 2.41 (1.34, 4.34) | 3.09 (0.99, 9.62) | 2.40 (1.66, 3.46) |
| Maternal cardiac conditions | 3.51 (2.08, 5.93) | 2.19 ( 1.54, 3.12) | 6.86 (3.83, 12.30) | 2.35 (1.85, 2.99) |
| Eclampsia/pre-eclampsia | 1.79 (1.00, 3.20) | 1.11 (0.75, 1.63) | 1.65 (0.90, 3.01) | 2.04 (1.58, 2.62) |
| Epilepsy | 3.63 (1.84 ,7.16) | 1.64 ( 0.95, 2.84) | 2.39 (0.90, 6.33) | 2.15 (1.52, 3.03) |
| Systemic diseases | 1.86 (1.13, 3.05) | 1.70 (1.20, 2.41) | 2.26 (1.20, 4.27) | 2.00 (1.54, 2.59) |
| Placenta previa | 0.19 (0.02, 1.51) | 2.04 (0.96, 4.36) | 2.22 (0.83, 5.96) | 1.96 ( 1.17, 3.28) |
| Chronic hypertension | 1.30 (0.76, 2.23) | 1.194 (0.826, 1.73) | 1.99 (1.13, 3.52) | 1.85 (1.44, 2.36) |
| Diabetes | 2.84 (1.76, 4.59) | 1.79 (1.34, 2.40) | 1.54 (0.99, 2.41) | 1.78 (1.46, 2.17) |
| Renal disease | 1.92 (1.03, 3.56) | 2.31 (1.51, 3.52) | 3.53 (1.86, 6.70) | 1.63 (1.21, 2.20) |
| PPROM | 1.86 (1.19, 2.91) | 1.43 (1.00, 2.02) | 2.36 (1.41, 3.93) | 1.45 (1.14, 1.85) |
| Prior fetal or infant death | 1.65 (0.95, 2.87) | 0.90 (0.63, 1.30) | 2.32 (1.44, 3.74) | 1.40 (1.10, 1.78) |
| Coagulation disorders | 0.45 (0.02, 7.99) | 4.08 (1.04, 15.99) | 18.03 (1.01, 321.33) | 2.62 (0.99, 6.91) |
| Asthma | 1.22, (0.41, 3.61) | 1.10 (0.56, 2.17) | 4.25 (1.53, 11.79) | 1.53 ( 0.96 2.44) |
| PIH | 1.84 (1.29, 2.62) | 1.02 (0.81, 1.30) | 2.39 (1.65, 3.47) | 1.03 ( 0.85, 1.25) |
| Hyperemesis > 14 weeks | 1.56 (1.05, 2.31) | 0.79 (0.60, 1.04) | 2.09 (1.33, 3.28) | 1.16 (0.95, 1.42) |
| History of preterm birth | 0.27 (0.09, 0.95) | 1.13 (0.72, 1.75) | 2.23 (1.11, 4.47) | 0.94 (0.67, 1.32) |
| Thrombosis | 119.22 (10.97 >999.99) | 2.37 (0.38, 14.77) | 2.36 (0.16, 34.93) | 3.20 (0.78, 13.07) |
| Patient Demographic Characteristics | ||||
| Age ≥ 35 | 1.83 (1.07, 3.12) | 1.42 (0.99, 2.05) | 1.31 (0.78, 2.22) | 1.73 (1.38, 2.17) |
| Black vs. white | 1.19 (0.89, 1.59) | 1.26 (1.04, 1.52) | 1.02 (0.77, 1.36) | 1.15 (1.01, 1.31) |
| Primiparous | 1.10 (0.84, 1.44) | 1.29 (1.08, 1.54) | 0.88 (0.68, 1.14) | 1.13 (0.00, 1.28) |
| First trimester start of prenatal care | 1.39 (1.06,1.82) | 0.88 (0.74,1.05) | 1.59 (1.23, 2.07) | 1.48 (1.30, 1.69) |
| Multiple births | 5.47 (3.10, 9.64) | 1.65 (1.08, 2.53) | 1.70 (0.92, 3.14) | 2.83 (2.20, 3.65) |
| Less than high school vs high school | 0.94 (0.72, 1.24) | 1.22 (1.02, 1.46) | 0.90 (0.70, 1.17) | 1.09 (0.95, 1.24) |
| Gestational age at delivery | 0.91 (0.87, 0.95) | 1.02 (0.99, 1.06) | 0.93 (0.89, 0.97) | 0.94 (0.92, 0.96) |
| County Characteristics | ||||
| Hospital in county offering high risk OB | 0.37 (0.28, 0.49) | 0.81 (0.68, 0.97) | 0.58 (0.43, 0.78) | 0.76 (0.67, 0.87) |
| Rural residential county vs small towns | 1.21 (0.87, 1.69) | 0.85 (0.69, 1.03) | 0.63 (0.44, 0.90) | 0.98 (0.84, 1.14) |
| Urban residential county vs small towns | 0.80 (0.58, 1.10) | 1.02 (0.83, 1.24) | 1.91 (1.38, 2.65) | 1.09 (0.93, 1.26) |
| Pulaski county | 6.03 (3.08, 11.81) | 1.54 (1.05, 2.26) | 0.35 (0.21, 0.61) | 1.36 (1.10, 1.68) |
| Months elapsed since 4/2001 | 1.00 (0.98,1.02) | 0.97 (0.96,0.98) | 1.02 (1.00,1.04) | 1.00 (0.99, 1.01) |
| Exposure to ANGELS Intervention | ||||
| Any MD call to Angels Call Center from residence county | 1.26 (0.80, 1.99) | 1.10 (0.87, 1.40) | 1.14 (0.78, 1.68) | 1.46 (1.22, 1.76) |
| Any PT call to ANGELS Call Center from Residence County | 1.05 (0.61, 1.80) | 1.12 (0.83, 1.50) | 0.98 (0.56, 1.73) | 0.85 (0.67, 1.08) |
| Any MD teleconference participation in residence county | 1.53 (1.08, 2.15) | 1.86 (1.42, 2.43) | 1.74 (1.09, 2.79) | 1.38 (1.14, 1.67) |
| Number of practice guidelines completed | 1.00 (0.99, 1.01) | 1.00 (0.99, 1.00) | 0.97 (0.96, 0.98) | 1.00 (1.00, 1.01) |
| Distance to closest telemedicine facility | 1.00 (1.00, 1.01) | 1.00 (1.00, 1.00) | 1.00 (1.00, 1.01) | 1.01 (1.00, 1.01) |
| Distance to UAMS | 0.99 (0.99, 1.00) | 1.00 (0.99, 1.00) | 0.99 (0.99, 0.99) | 0.99 (0.99, 0.99) |
The analysis has been adjusted for all the other variables (variables that are not significant are not shown)