Table 1 Characteristics at baseline for all patients and patients with a colonoscopy
All Patients | With Colonoscopy | Univariate | Likelihood Ratio | |||
|---|---|---|---|---|---|---|
N | (% of all) | N | (% row) | HR | p-value | |
All | 1596 | 100.00% | 556 | 34.80% | ||
Age | 0.0040 | |||||
50–54 | 498 | 31.20% | 200 | 40.20% | ref | |
55–59 | 425 | 26.60% | 156 | 36.70% | 0.91 | |
60–64 | 377 | 23.60% | 122 | 32.40% | 0.76 | |
65–69 | 202 | 12.70% | 62 | 30.70% | 0.71 | |
70–75 | 94 | 5.90% | 16 | 17.00% | 0.37 | |
Sex | 0.4032 | |||||
Male | 757 | 47.40% | 275 | 36.30% | ref | |
Female | 839 | 52.60% | 281 | 33.50% | 0.9 | |
BMI | 0.1467 | |||||
< 24 | 420 | 26.30% | 143 | 34.10% | ref | |
25–29 | 453 | 28.40% | 149 | 32.90% | 0.98 | |
30–34 | 349 | 21.90% | 137 | 39.30% | 1.22 | |
35–39 | 209 | 13.10% | 65 | 31.10% | 0.89 | |
40+ | 165 | 10.30% | 62 | 37.60% | 1.15 | |
Language | 0.0780 | |||||
Non-English | 312 | 19.60% | 95 | 30.50% | ref | |
English | 1284 | 80.50% | 461 | 35.90% | 1.26 | |
Race | 0.0599 | |||||
Non-White | 266 | 16.70% | 72 | 27.10% | ref | |
White | 1330 | 83.30% | 484 | 36.40% | 1.48 | |
Ethnicity | 0.0270 | |||||
Non-Hispanic | 1445 | 90.50% | 496 | 34.30% | ref | |
Hispanic | 151 | 9.50% | 60 | 39.70% | 1.21 | |
Insurance | 0.5652 | |||||
Uninsured | 265 | 16.60% | 86 | 32.50% | ref | |
Medicaid | 748 | 46.90% | 282 | 37.70% | 1.18 | |
Medicare | 435 | 27.30% | 136 | 31.30% | 0.94 | |
Commercial | 148 | 9.30% | 52 | 35.10% | 1.1 | |
Tobacco Use | 0.9812 | |||||
Never/Quit | 1153 | 72.20% | 393 | 34.10% | ref | |
Current User | 443 | 27.80% | 163 | 36.80% | 1.11 | |
Percent of Census Tract with College Degree | 0.0697 | |||||
4.9–14.6 | 346 | 21.70% | 125 | 36.10% | ref | |
14.7–19.9 | 337 | 21.10% | 96 | 28.50% | 0.73 | |
19.9–25.7 | 324 | 20.30% | 125 | 38.60% | 1.08 | |
26.0–36.8 | 282 | 17.70% | 94 | 33.30% | 0.88 | |
36.9–77.7 | 307 | 19.20% | 116 | 37.80% | 1.04 | |
Percent of Census Tract Households below FPL | 0.2315 | |||||
2.7–11.4 | 283 | 17.70% | 105 | 37.10% | ref | |
11.4–14.8 | 288 | 18.10% | 100 | 34.70% | 0.91 | |
14.9–19.4 | 309 | 19.40% | 105 | 34.00% | 0.89 | |
19.5–25.8 | 333 | 20.90% | 131 | 39.30% | 1.05 | |
26.1–53.9 | 383 | 24.00% | 115 | 30.00% | 0.75 | |
Census Tract Median Household Income | 0.6530 | |||||
$14,000 - $36,000 | 331 | 20.70% | 101 | 30.50% | ref | |
$36,000 - $41,000 | 330 | 20.70% | 125 | 37.90% | 1.32 | |
$41,000 - $47,000 | 353 | 22.10% | 117 | 33.10% | 1.11 | |
$47,000 - $56,000 | 286 | 17.90% | 101 | 35.30% | 1.18 | |
$56,000 - $149,000 | 296 | 18.60% | 112 | 37.80% | 1.33 | |
Census Tract Unemployment | 0.0009 | |||||
2.6–8.1 | 323 | 20.20% | 132 | 40.90% | ref | |
8.2–10.2 | 285 | 17.90% | 83 | 29.10% | 0.65 | |
10.2–12.7 | 293 | 18.40% | 88 | 30.00% | 0.68 | |
12.7–15 | 397 | 24.90% | 146 | 36.80% | 0.87 | |
15.0–32.4 | 298 | 18.70% | 107 | 35.90% | 0.84 | |
Census Tract Population Density (People per square mile of land area) | 0.2521 | |||||
0.8–174 | 238 | 14.90% | 96 | 40.30% | ref | |
176–1571 | 217 | 13.60% | 62 | 28.60% | 0.67 | |
1574 - 3770 | 289 | 18.10% | 83 | 28.70% | 0.64 | |
3781 - 6576 | 358 | 22.40% | 144 | 40.20% | 0.98 | |
6593 - 26,873 | 494 | 31.00% | 171 | 34.60% | 0.8 | |
Census Tract GINI Income Inequality | 0.4162 | |||||
0.27–0.38 | 329 | 20.60% | 102 | 31.00% | ref | |
0.38–0.41 | 326 | 20.40% | 115 | 35.30% | 1.15 | |
0.41–0.43 | 326 | 20.40% | 122 | 37.40% | 1.24 | |
0.43–0.47 | 256 | 16.00% | 97 | 37.90% | 1.26 | |
0.47–0.82 | 359 | 22.50% | 120 | 33.40% | 1.09 | |
Low access Census Tract at 1/2 mile for urban areas or 5 miles for rural areas | 0.8152 | |||||
No | 309 | 19.40% | 121 | 39.20% | ref | |
Yes | 1287 | 80.60% | 435 | 33.80% | 0.81 | |
Emergency Room Visits per 1000 Medicare Enrollees (County) | 0.7264 | |||||
0 | 356 | 22.30% | 107 | 30.10% | ref | |
1 | 914 | 57.30% | 337 | 36.90% | 1.24 | |
2+ | 326 | 20.40% | 112 | 34.40% | 1.16 | |
Urban/Rural County | 0.7809 | |||||
Cluster (10-50 k population) | 276 | 17.30% | 84 | 30.40% | ref | |
Rural (< 10 K population) | 246 | 15.40% | 97 | 39.40% | 1.39 | |
Urban (50 k + population) | 1074 | 67.30% | 375 | 34.90% | 1.16 | |
Charlson Comorbidity | 0.7870 | |||||
0 | 705 | 44.20% | 259 | 36.70% | ref | |
1 | 465 | 29.10% | 159 | 34.20% | 0.94 | |
2 | 213 | 13.40% | 71 | 33.30% | 0.89 | |
3+ | 213 | 13.40% | 67 | 31.50% | 0.83 | |
Asthma/COPD dx in 2 years prior to index | 0.1816 | |||||
No | 1122 | 70.30% | 404 | 36.00% | ref | |
Yes | 474 | 29.70% | 152 | 32.10% | 0.87 | |
Diabetes dx in 2 years prior to index | 0.2072 | |||||
No | 881 | 55.20% | 322 | 36.60% | ref | |
Yes | 715 | 44.80% | 234 | 32.70% | 0.86 | |
Severe mental illness | 0.7889 | |||||
No | 1455 | 91.20% | 504 | 34.60% | ref | |
Yes | 141 | 8.80% | 52 | 36.90% | 1.09 | |
Mood disorder (Depression, Bipolar) dx in 2 years prior to index | 0.6492 | |||||
No | 1006 | 63.00% | 342 | 34.00% | ref | |
Yes | 590 | 37.00% | 214 | 36.30% | 1.1 | |
Substance/alcohol abuse dx in 2 years prior to index | 0.6928 | |||||
No | 1264 | 79.20% | 434 | 34.30% | ref | |
Yes | 332 | 20.80% | 122 | 36.80% | 1.14 | |
Long term anticoagulant use | 0.0353 | |||||
No | 1545 | 96.80% | 546 | 35.30% | ref | |
Yes | 51 | 3.20% | 10 | 19.60% | 0.5 | |
Blood in Stool prior to abnormal FIT | 0.3026 | |||||
No | 1538 | 96.40% | 538 | 35.00% | ref | |
Yes | 58 | 3.60% | 18 | 31.00% | 0.86 | |
Hemorrhoid/Anal Fissure prior to abnormal FIT | 0.3546 | |||||
No | 1514 | 94.90% | 526 | 34.70% | ref | |
Yes | 82 | 5.10% | 30 | 36.60% | 1.08 | |
Prior CRC screening | 0.2966 | |||||
No | 985 | 61.70% | 362 | 36.80% | ref | |
Yes | 611 | 38.30% | 194 | 31.80% | 0.82 | |
Flu shot within 1 year of index date | 0.0000 | |||||
No | 1368 | 85.70% | 452 | 33.00% | ref | |
Yes | 228 | 14.30% | 104 | 45.60% | 1.57 | |
Number of outpatient encounters in the year prior to index date | 0.3248 | |||||
0 | 203 | 12.70% | 85 | 41.90% | ref | |
1 | 173 | 10.80% | 52 | 30.10% | 0.65 | |
2 | 196 | 12.30% | 59 | 30.10% | 0.64 | |
3 | 209 | 13.10% | 80 | 38.30% | 0.86 | |
4 | 147 | 9.20% | 50 | 34.00% | 0.73 | |
5 | 119 | 7.50% | 42 | 35.30% | 0.79 | |
6+ | 549 | 34.40% | 188 | 34.20% | 0.77 | |
Count of no-show encounters in the year prior to index date | 0.0022 | |||||
0 | 1128 | 70.70% | 394 | 34.90% | ref | |
1 | 253 | 15.90% | 99 | 39.10% | 1.16 | |
2+ | 215 | 13.50% | 63 | 29.30% | 0.82 | |
Health Center | 0.0000 | |||||
HC 8 | 155 | 9.70% | 31 | 20.00% | ref | |
HC 7 | 70 | 4.40% | 19 | 27.10% | 1.45 | |
HC 4 | 104 | 6.50% | 44 | 42.30% | 2.57 | |
HC 2 | 615 | 38.50% | 193 | 31.40% | 1.62 | |
HC 5 | 287 | 18.00% | 139 | 48.40% | 3.03 | |
HC 6 | 232 | 14.50% | 66 | 28.50% | 1.43 | |
HC 3 | 133 | 8.30% | 64 | 48.10% | 3.12 | |