High rates of postoperative radiotherapy delay in head and neck cancer before and after Medicaid expansion

Delays Starting Postoperative Radiotherapy Among Head and Neck Cancer Patients: A Systematic Review and Meta-analysis

OBJECTIVE

Initiating postoperative radiotherapy (PORT) within 6 weeks (42 days) of surgery is the first and only Commission on Cancer (CoC) approved quality metric for head and neck squamous cell carcinoma (HNSCC). No study has systematically reviewed nor synthesized the literature to establish national benchmarks for delays in starting PORT.

DATA SOURCES

Following Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines, we performed a systematic review of PubMed, Scopus, and CINAHL.

REVIEW METHODS

Studies that described time-to-PORT or PORT delays in patients with HNSCC treated in the United States after 2003 were included. Meta-analysis of proportions and continuous measures was performed on nonoverlapping datasets to examine the pooled frequency of PORT delays and time-to-PORT.

RESULTS

Thirty-six studies were included in the systematic review and 14 in the meta-analysis. Most studies utilized single-institution (n = 17; 47.2%) or cancer registry (n = 16; 44.4%) data. Twenty-five studies (69.4%) defined PORT delay as >6 weeks after surgery (the definition utilized by the CoC and National Comprehensive Cancer Network Guidelines), whereas 4 (11.1%) defined PORT delay as a time interval other than >6 weeks, and 7 (19.4%) characterized time-to-PORT without defining delay. Meta-analysis revealed that 48.6% (95% confidence interval [CI], 41.4-55.9) of patients started PORT > 6 weeks after surgery. Median and mean time-to-PORT were 45.8 (95% CI, 42.4-51.4 days) and 47.4 days (95% CI, 43.4-51.4 days), respectively.

CONCLUSION

Delays in initiating guideline-adherent PORT occur in approximately half of patients with HNSCC. These meta-analytic data can be used to set national benchmarks and assess progress in reducing delays.

Racial disparities in the timely receipt of adjuvant radiotherapy for head and neck cancer

PURPOSE

To evaluate the influence of socioeconomic and demographic factors which might predict for excessive delays in the receipt of adjuvant radiotherapy for head and neck cancer.

METHODS AND MATERIALS

The medical records of 430 consecutive patients referred for adjuvant radiation after surgical resection for squamous cell carcinoma of the head and neck were reviewed. The number of days from surgery to initiation of radiation was recorded. To study the variability in which adjuvant radiation was delivered, descriptive statistics were used to determine the percentage of patients who deviated from starting treatment beyond the recommended benchmark of 42 days. The chi-square statistic was used to compare differences in proportion among subsets. A Cox proportional hazards model was constructed to perform a multi-variate analysis to identify factors which independently influenced the likelihood for non-adherence.

RESULTS

The interval between surgery and the start of radiation therapy ranged from 5 to 128 days (mean, 36 days). The mean number of days from surgery to radiation therapy was 31 days, 35 days, 40 days, and 42 days for Caucasians, Asians, Latino, and Black patients (p = 0.01). In all, 359 of 430 patients (83 %) started adjuvant radiation within 42 days. The proportion of patients who initiated radiation therapy within 42 days of surgery was 91 %, 86 %, 71 %, 65 %, and 80 % for Caucasians, Asians, Latinos, Blacks, and Native Hawaiian/Pacific Islanders, respectively (p < 0.001). Patient characteristics associated with higher odds of non-adherence to the timely receipt of adjuvant radiation therapy within then 42-day benchmark from surgery to radiation included race ([OR] = 4.23 95 % CI (1.30-7.97), non-English speaking status ([OR] = 2.38, 95 % CI: 0.61-4.50), and low socioeconomic status ([OR] = 1.21, 95 % CI: 1.01-1.86).

CONCLUSION

Underrepresented minorities are more likely to experience delays in the receipt of adjuvant radiation for head and neck cancer. The potential underlying reasons are discussed.

Targets for improving disparate head and neck cancer outcomes in the low-income population

Low-income patients have worse head and neck cancer outcomes than those with high-income. Yet, few targets have been identified to specifically improve outcomes in the low-income population. Here, we conduct a review on the current literature on head and neck cancer outcomes in the low-income population and identify targets for intervention. The degree of disparity is in the range of 20%-90% worse overall survival in the low-income population. Eliminating smoking would have the greatest effect on head and neck cancer mortality rates in the low-income population. Additionally, access to oral cancer exams, assistance with transportation, and continued expansion of telemedicine would facilitate early diagnosis and timely treatment in patients who develop head and neck cancer.