Table 3.
Results from adjusteda quantile regression for the diagnostic interval, primary care subinterval, and specialist care subinterval.
| Diagnostic interval | Primary care subinterval | Specialist care subinterval | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 50th percentile | 90th percentile | 50th percentile | 90th percentile | 50th percentile | 90th percentile | |||||||
| Characteristic | B | Confidence interval (95%) | B | Confidence interval (95%) | B | Confidence interval (95%) | B | Confidence interval (95%) | B | Confidence interval (95%) | B | Confidence interval (95%) |
| Intercept | 31.2 | 27.6–34.7 | 126.8 | 116.9–136.7 | 23.5 | 21.2–25.8 | 99.3 | 90.3–108.3 | 1.0 | −0.5–1.5 | 68.9 | 61.4–76.5 |
| Patient factors | ||||||||||||
| Sex | ||||||||||||
| Male | −1.1 | −2.6–0.4 | −4.3 | −8.5–−0.1 | −1.0 | −1.9–−0.1 | −2.1 | −5.8–1.6 | 0.0 | −0.2–0.2 | −5.9 | −9.5–−2.2 |
| Female | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref |
| Age | ||||||||||||
| 20–45 | 2.7 | 0.3–5.0 | 16.1 | 9.2–23.1 | 2.2 | 0.6–3.9 | 15.9 | 10.0–21.9 | 0.0 | −0.2–0.2 | −0.8 | −7.3–5.8 |
| 46–55 | 0.4 | −1.6–2.4 | 0.3 | −5.9–6.5 | 0.4 | −1.2–1.9 | 4.3 | −1.3–9.9 | 0.0 | −0.2–0.2 | −6.7 | −12.8–−0.7 |
| 56–65 | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref |
| 66–75 | 1.6 | −0.7–3.9 | −1.3 | −7.4–4.8 | −0.1 | −1.5–1.3 | −3.8 | −9.0–1.5 | 0.3 | −0.2–0.9 | 2.1 | −3.4–7.7 |
| 76–85 | 0.3 | −2.2–2.8 | −12.2 | −18.2–−6.1 | −1.5 | −3.1–0.1 | −10.3 | −15.8–−4.8 | 0.3 | −0.4–1.1 | −2.9 | −8.3–2.5 |
| >85 | 1.8 | −1.5–5.1 | −15.2 | −22.6–−7.8 | −0.4 | −2.6–1.7 | −13.2 | −19.6–−6.8 | 0.0 | −1.6–1.6 | −4.5 | −13.5–4.4 |
| Comorbidity Minor ADG | ||||||||||||
| 0–1 | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref |
| 2 | 3.1 | 0.2–6.0 | 10.4 | 1.1–19.7 | 1.3 | −0.7–3.4 | 5.5 | −2.8–13.8 | 0.0 | −0.3–0.3 | 2.2 | −3.8–8.3 |
| 3 | 2.9 | 0.0–5.7 | 12.2 | 2.6–21.8 | 0.7 | −1.2–2.6 | 5.9 | −2.3–14.1 | 0.0 | −0.3–0.3 | 1.2 | −6.0–8.3 |
| 4 | 5.7 | 2.7–8.8 | 11.6 | 3.4–19.7 | 1.2 | −1.0–3.4 | 4.0 | −4.4–12.3 | 0.0 | −0.5–0.5 | 7.4 | 0.2–14.7 |
| 5 | 6.8 | 3.8–9.7 | 8.1 | −0.8–17.1 | 1.9 | −0.2–3.9 | 0.9 | −5.8–7.7 | 0.0 | −0.4–0.4 | 4.8 | −2.4–12.0 |
| 6 | 3.2 | 0.0–6.5 | 9.7 | 0.5–18.9 | 0.5 | −1.7–2.6 | 2.4 | −5.3–10.1 | 0.0 | −0.4–0.4 | 11.8 | 3.4–20.3 |
| 7 | 5.3 | 2.0–8.6 | 6.0 | −3.2–15.2 | 0.4 | −2.0–2.7 | −0.4 | −8.7–7.8 | 2.0 | 0.9–3.1 | 14.0 | 5.5–22.4 |
| 8 | 3.9 | 0.6–7.3 | 6.0 | −2.4–14.3 | −1.1 | −3.4–1.3 | −1.6 | −9.4–6.2 | 0.0 | −0.7–0.7 | 11.7 | 1.3–22.1 |
| 9+ | 10.0 | 6.1–13.9 | 8.9 | −0.2–17.9 | −0.4 | −2.5–1.8 | −0.1 | −9.0–8.8 | 5.0 | 3.8–6.2 | 15.7 | 8.1–23.3 |
| Major ADG | ||||||||||||
| 0 | −1.9 | −3.7–−0.2 | −10.0 | −14.9–−5.0 | −0.8 | −1.9–0.3 | −2.2 | −6.6–2.2 | 0.0 | −0.3–0.3 | −10.0 | −14.1–−6.0 |
| 1 | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref |
| 2 | 2.6 | −0.1–5.3 | 4.7 | −1.6–11.0 | −0.3 | −1.7–1.1 | 4.8 | −0.4–10.1 | 1.3 | 0.2–2.4 | 3.2 | −2.4–8.8 |
| 3+ | 6.7 | 3.6–9.7 | 14.4 | 7.0–21.8 | 0.4 | −1.2–2.0 | 10.4 | 4.0–16.8 | 3.3 | 1.8–4.9 | 17.3 | 10.1–24.5 |
| Material deprivation quintile | ||||||||||||
| 1–least deprived | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref |
| 2 | 0.00 | −2.2–2.2 | −0.6 | −6.9–5.8 | 0.5 | −1.0–2.1 | −1.9 | −7.3–3.4 | 0.0 | −0.2–0.2 | −3.1 | −8.0–1.8 |
| 3 | −1.0 | −3.5–1.6 | −2.8 | −8.8–3.2 | −1.0 | −2.5–0.4 | −5.2 | −10.1–−0.2 | 0.0 | −0.2–0.2 | −3.6 | −8.7–1.5 |
| 4 | −1.5 | −4.0–0.9 | −1.4 | −7.8–4.9 | −1.1 | −2.7–0.5 | −4.0 | −9.6–1.6 | 0.0 | −0.3–0.3 | −4.6 | −9.7–0.5 |
| 5–most deprived | −4.1 | −6.4–−1.7 | −12.3 | −18.1–−6.5 | −3.4 | −5.0–−1.8 | −11.3 | −17.0–−5.6 | 0.0 | −0.3–0.3 | −2.4 | −8.0–3.1 |
| Rurality | ||||||||||||
| Rural | −11.1 | −13.4–−8.9 | −4.5 | −11.4–2.3 | −5.8 | −7.2–−4.4 | −0.4 | −6.8–5.9 | 0.0 | −0.2–0.2 | 1.1 | −6.0–8.3 |
| Non-major urban | −5.1 | −6.8–−3.4 | −1.8 | −6.5–2.9 | −3.1 | −4.2–1.9 | −0.8 | −4.8–3.1 | 0.0 | −0.3–0.3 | 0.9 | −3.4–5.2 |
| Major urban | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref |
| History of NMSC | ||||||||||||
| Yes | 16.2 | 12.9–19.4 | 35.3 | 28.3–42.3 | 4.4 | 2.5–6.2 | 11.5 | 5.7–17.3 | 14.0 | 12.0–16.0 | 44.0 | 38.4–49.5 |
| No | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref |
| Established with dermatology | ||||||||||||
| Yes | 5.7 | 2.8–8.5 | 9.4 | 3.5–15.3 | 6.4 | 4.3–8.5 | 20.3 | 13.9–26.6 | 7.7 | 6.3–9.1 | 22.5 | 18.5–26.5 |
| No | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref |
| Disease factors | ||||||||||||
| Histology | ||||||||||||
| Superficial spreading melanoma | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref |
| Nodular melanoma | −3.6 | −5.7–−1.5 | −10.7 | −16.4–−5.1 | −1.3 | −2.7–0.1 | −8.4 | −13.5–−3.3 | 0.0 | −0.4–0.4 | −7.1 | −12.6–−1.7 |
| Lentigo maligna melanoma | 4.5 | 1.1–7.9 | 10.4 | 2.4–18.4 | 2.5 | 0.4–4.7 | 3.2 | −3.6–10.0 | 3.7 | 1.4–6.0 | 10.4 | 3.6–17.1 |
| Acral lentiginous melanoma | 8.4 | −0.7–17.5 | 3.6 | −16.4–23.6 | 4.3 | −1.1–9.7 | −1.1 | −20.1–17.9 | 13.8 | 3.8–23.8 | 11.6 | −0.3–23.5 |
| Other | 4.6 | 0.1–9.0 | 1.6 | −9.9–13.2 | 1.8 | −1.3–4.8 | −3.6 | −12.4–5.2 | 1.3 | −0.6–3.3 | 7.1 | −2.2–16.4 |
| NOS | −2.5 | −4.0–−0.9 | 7.5 | 2.5–12.5 | 0.5 | −0.6–1.5 | 3.2 | −1.0–7.4 | 0.0 | −0.3–0.3 | 5.0 | 1.4–8.6 |
| Location | ||||||||||||
| Extremities | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref |
| Trunk | −0.8 | −2.4–0.9 | 0.8 | −4.0–5.5 | −1.5 | −2.6–−0.4 | −4.1 | −8.6–0.5 | 0.7 | 0.4–1.0 | 5.7 | 1.2–10.2 |
| Face | 11.4 | 8.4–14.4 | 11.4 | 4.5–18.3 | 3.5 | 1.7–5.4 | 1.8 | −4.5–8.2 | 4.3 | 3.1–5.5 | 10.4 | 4.7–16.2 |
| Scalp and neck | 7.9 | 5.0–10.8 | 5.4 | −2.6–13.5 | 2.4 | 0.3–4.5 | −2.4 | −10.0–5.1 | 4.7 | 3.2–6.2 | 12.9 | 6.1–19.7 |
| NOS | −2.2 | −5.5–1.0 | 15.1 | 3.2–27.0 | −3.5 | −5.7–−1.2 | −3.3 | −13.2–6.6 | 9.7 | 7.7–11.6 | 36.3 | 25.3–47.3 |
B is the difference (in days) from the reference category.
Bolded values signify statistical significance.
aMutually adjusted for all variables in table.
ADG Adjusted Diagnostic Groups, NMSC Non-Melanoma Skin Cancer, NOS Not Otherwise Specified.