Table II.
Relation between health provider density (by specialty) and the log-likelihood of dying from or being diagnosed with advanced stage malignant melanoma, controlling for Socioeconomic Status (SES), SEER-9 program, 1988–1993.
| Advanced Stage of Melanoma at Diagnosis | Death from Malignant Melanoma | |||
|---|---|---|---|---|
| Provider Density alone† Log-odds (Standard Error) ‡ | Controlling for SES** Log-odds (Standard Error) ‡ | Provider Density alone† Log-odds (Standard Error) ‡ | Controlling for SES** Log-odds (Standard Error) ‡ | |
| Dermatologists per 100,000 population | −410 (200)* | −160 (200) | −660 (200)* | −360 (200) |
| Family Practitioners per 100,000 population | 63 (27)* | 80 (30)* | 70 (30)* | 80 (30)* |
| Internists per 100,000 population | 30 (21) | 3 (20) | 40 (20) | 20 (20) |
| Likelihood Ratio χ2, df (p-value) | 8.7, df 3 (p=0.03) | 96.1, df 6 (p<0.0001) | 20.1, df 3 (p=0.0002) | 154.7, df 6 (p<0.0001) |
P-value <0.05.
Density of dermatologists, family practitioners and internists examined in same model.
Density of providers examined in same model which controlled for the census tract median household income, proportion of the population white, and proportion with less than a high school education.
All Log-odds and standard errors × 10−4
Note: The dependent individual-level variables of Malignant Melanoma-specific death (yes/no) and Advanced stage of melanoma at diagnosis (lymph node or metastatic involvement vs. not) were analyzed as dichotomous variables using logistic regression (please refer to methods section for further detail).