Table 2. Pain Diagnoses of Patients Screened.
| Variable | Overall sample (n = 31 600), No. (%) | Screening result, No. % | Cramer V (95% CI) | P valuea | |
|---|---|---|---|---|---|
| Negative (n = 21 338) | Positive (n = 10 262) | ||||
| Documented pain diagnosis in year before screening (n = 31 600) | |||||
| Had existing pain diagnosisb | 11 725 (37.1) | 5948 (27.9) | 5777 (56.3) | 0.276 (0.264-0.287)c | <.001 |
| No existing pain diagnosis | 19 875 (62.9) | 15 390 (72.1) | 4485 (43.7) | ||
| Newly documented pain diagnosis among those with no existing pain diagnosis at screening (n = 19 875) | |||||
| New pain diagnosisd | 5232 (26.3) | 2862 (18.6) | 2370 (52.8) | 0.325 (0.310-0.340)e | <.001 |
| No new pain diagnosis | 14 643 (73.7) | 12 528 (81.4) | 2115 (47.2) | ||
a
P values adjusted for multiple comparisons using the Holm method; all P values significant at P < .001 owing to sample size.
b
Chronic pain condition diagnosis documented within 365 days before screening.
c
Weak strength of association.
d
No existing pain diagnosis and a documented chronic pain diagnosis on the day of screening or within 90 days postscreening.
e
Moderate strength of association.