Table 4.
Summary of unweighted and weighted prevalence among NYC INSIGHT Common Data Model patients in 2018
| Indicator | Crude prevalencea (95% confidence interval) |
Weighted prevalenceb (95% confidence interval) |
Internal validationc | External validationd |
|---|---|---|---|---|
| (Prevalence ratio) | (Prevalence ratio) | |||
| Risk factors (%) | ||||
| Adult obesity | 33.4 (33.3–33.5) | 31.3 (31.2–31.5) | 1.11* | 1.02 |
| Childhood obesity | 24.4 (24.1–24.6) | 22.3 (22.0–22.6) | 1.18* | 1.19 |
| Smoking | 10.9 (10.8–10.9) | 11.7 (11.6–11.8) | 1.67* | 0.87 |
| Screening and immunization (%) | ||||
| Breast cancer screening | 24.2 (24.1–24.4) | 24.1 (24.0–24.2) | 0.54 | 0.32 |
| Cervical cancer screening | 10.6 (10.6–10.7) | 10.7 (10.6–10.7) | 0.23 | 0.13 |
| Colorectal cancer screening | 16.6 (16.5–16.7) | 16.7 (16.6–16.8) | 0.42 | 0.24 |
| Hepatitis C testing | 5.0 (4.9–5.1) | 4.8 (4.8–4.9) | 0.17 | 0.12 |
| HBV vaccination initiation | 35.9 (35.0–36.9) | 35.3 (34.4–36.2) | 0.40 | 0.46 |
| HBV vaccination completion | 8.4 (8.0–8.8) | 7.9 (7.6–8.3) | 0.14 | – |
| HPV vaccination initiation | 21.4 (21.1–21.7) | 21.1 (20.8–21.3) | 0.53 | – |
| HPV vaccination completion | 10.7 (10.5–11.0) | 10.6 (10.3–10.8) | 0.90 | 0.18 |
| Quality of care (%) | ||||
| Breast: any diagnostic test | 86.8 (86.3–87.2) | 85.9 (85.4–86.4) | 1.31 | – |
| Breast: timely diagnostic test | 86.1 (85.6–86.5) | 85.1 (84.6–85.7) | 1.34 | – |
| Breast: timely diagnosis | 79.2 (76.6–81.8) | 77.8 (74.7–80.8) | 1.08 | – |
| Cervical: any diagnostic test | 48.3 (47.5–49.1) | 46.1 (45.2–47.1) | 0.77 | – |
| Cervical: timely diagnostic test | 40.3 (39.5–41.1) | 38.6 (37.7–39.6) | 0.67 | – |
| Cervical: timely diagnosis | 63.6 (48.8–78.4) | 57.1 (34.7–79.6) | 1.14 | – |
| Colorectal: any diagnostic test | 82.6 (81.4–83.8) | 82.2 (80.8–83.5) | 1.35 | – |
| Colorectal: timely diagnostic test | 21.6 (17.6–25.5) | 21.2 (16.8–25.6) | 1.38 | – |
| Colorectal: timely diagnosis | 72.9 (63.9–82.0) | 68.5 (55.6–81.4) | 0.91 | – |
| Incidence and prevalence (per 1000) | ||||
| Breast cancer incidence | 4.7 (4.6–4.9) | 4.1 (4.0–4.2) | 0.66 | 3.42 |
| Breast cancer prevalence | 33.1 (32.8–33.5) | 27.4 (27.2–27.6) | 0.91 | 1.52 |
| Cervical cancer incidence | 0.3 (0.3–0.4) | 0.3 (0.3–0.3) | 1.92 | 1.40 |
| Cervical cancer prevalence | 1.8 (1.7–1.9) | 1.6 (1.5–1.6) | 1.11 | 1.78 |
| Colorectal cancer incidence | 1.0 (0.9–1.0) | 0.8 (0.8–0.8) | 0.83 | 1.98 |
| Colorectal cancer prevalence | 5.2 (5.1–5.3) | 4.1 (4.0–4.2) | 1.13 | 1.14 |
aUnweighted prevalence within the INSIGHT patient population
bWeighted to total NYC population using IPUMS USA 2018 data
cPrevalence ratio comparing the crude INSIGHT estimate to the estimate calculated within the NYU patient population using the full NYU EHR
dPrevalence ratio comparing the weighted INSIGHT estimate to the reported estimates from external data sources as follows: NYC Health and Nutrition Examination Survey (adult obesity), NYC FITNESSGRAM (childhood obesity), NYC Community Health Survey (breast, cervical, and colorectal cancer screening), NYC Citywide Immunization Registry (HBV initiation and HPV completion), and NYS Cancer Registry (breast, cervical, and colorectal incidence and prevalence)
*Internal validation found to be statistically equivalent through the two one-sided t-tests of equivalence using a 5-point equivalence margin