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. 2022 Apr 21;17(4):e0266346. doi: 10.1371/journal.pone.0266346

Table 5. Summary of costs estimates of included studies in the systematic review.

Study Year of cost Country Currency Cancer anatomical sites considered for cost Cost per patient (95% CI) Cost per patient by clinical stage Other measures of cost (95% CI)
Longitudinal studies
1. Kim, 2011 [23] 2009 United Kingdom Pounds (GBP) Lip; other and unspecified parts of tongue; oral cavity; pharynx; larynx Post-operative treatment for resected patients (average)– 5-year follow-up:
• Lip: 5,790
• Tongue: 19,493
• Oral cavity: 25,311
Not applicable Post-operative treatment for resected patients (average)– 5-year follow-up:
Inpatient care:
• Lip: 4,798
• Tongue: 17,910
• Oral cavity: 23,143
Outpatient care:
• Lip: 992
• Tongue: 1,583
• Oral cavity: 2,168
2. Polesel, 2019 [26] 2010 Italy Euros (EUR) Oral cavity (including lip and pharynx); oropharynx; hypopharynx; larynx Cost per patient (average– 95% CI)– 2-year follow-up:
• Oral cavity: 18,462 (17,720–19,205)
• Oropharynx: 24,253 (23,197–25,310)
Not applicable Cost per patient (average– 95%CI):
Oral cavity:
• Before treatment: 1,223 (1,103–1,343)
• 0–3 months treatment: 11,102 (10,702–11,503)
• 4–12 months treatment: 4,421 (3,838–5,004)
• 13–24 months treatment: 2,282 (2,071–2,493)
Oropharynx:
• Before treatment: 2,932 (2,640–3,223)
• 0–3 months treatment: 12,646 (12,123–13,170)
• 4–12 months treatment: 8,658 (7,562–9,754)
• 13–24 months treatment: 4,113 (3,696–4,531)
3. Jacobson, 2012 [24] 2009 United States of America US Dollars (USD) Lip; base of tongue; gum; floor of mouth; other and unspecified parts of mouth; oral cavity; salivary gland; major salivary gland; oropharynx Not reported Not applicable Oral cavity, oropharynx and salivary gland tumors (average ± standard deviation)– 1-year follow-up:
• Commercial insurance: 79,151 ± 86,170
• Medicare: 48,410 ± 61,599
• Medicaid: 59,404 ± 74,919
4. Pollaers, 2019 [25] 2016/2017 Australia Australian Dollars (AUD) Other and unspecified parts of tongue; floor of mouth; retromolar trigone Squamous cell carcinoma (average)– 2-year follow-up:
Floor of mouth: 103,832
• First year: 101,187
• Second year: 2,645
Tongue: 92,761
• First year: 86,391
• Second year: 6,279
Inpatients costs:
Stage I:
• 1-year: 33,985
• 2-year: 37,101
• 5-year: 43,661
Stage II:
• 1-year: 61,690
• 2-year: 45,376
• 5-year: 44,548
Stage III:
• 1-year: 79,684
• 2-year: 90,557
• 5-year: 88,976
Stage IVa:
• 1-year: 93,269
• 2-year: 104,257
• 5-year: 118,913
Squamous cell carcinoma of floor of the mouth, tongue, and alveolar trigone (average)– 2‐year follow‐up:
• Remained disease‐free: 65,012
• Cases with disease recurrence: 98,359
First year:
• Inpatient: 66,004
• Outpatient: 30,214
Second year:
• Inpatient: 72,208
• Outpatient: 35,590
5. Huang, 2020 [27] 2018 Taiwan US Dollars (USD) Lip; base of tongue; other and unspecified parts of tongue; gum; floor of mouth; palate; other and unspecified parts of mouth; tonsil; oropharynx; piriform sinus; hypopharynx; ill-defined and unspecified sites of lips, oral cavity, and pharynx Average per patient– 2.3-years follow-up: 56,501
Mean ± standard deviation:
• Direct medical costs mean: 19,644 ± 15,305
• Indirect costs morbidity: 1,286 ± 1,386
• Indirect costs mortality: 35,570 ± 61,859
• All medication costs mean: 2,359
• Anticancer drug costs mean: 638
--- ---
Cross-sectional and case control studies
6. Rezapour, 2018 [29] 2014 Iran US Dollars (USD) Lip; other and unspecified parts of tongue; floor of mouth; buccal Floor of mouth, lip, tongue, buccal (average)– 1-year follow-up:
Direct costs:
• Diagnosis: 82
• Early stage (I/II): 2,225
• Advanced stage (III/IV): 10,532
• Recurrency: 1,485
• Follow-up: 291
Direct non-medical costs
• Traveling: 1,035
• Home care: 665
Indirect costs:
• Employed patients: 2,477
• Unemployed patients: 1,230
• Accompanied: 481
• Premature mortality: 106,257
Floor of mouth, lip, tongue, buccal (average)– 1-year follow-up:
• Stages I/II (surgery and radiotherapy): 2,225
• Stages III/IV (surgery, radiotherapy, and chemotherapy): 10,532
Total cost (Iran): 64,245,173
    Direct costs: 27,284,501
• Direct non-medical costs: 5,143,629
• Indirect costs: 31,817,043
7. van Agthoven, 2001 [35] 1996 The Netherlands Euros (EUR) Oral cavity; oropharynx; larynx Average per patient– 10-year follow-up:
• Oral cavity: 35,541
• Oropharynx: 35,642
Not applicable Oral cavity (per patient):
• Primary tumor: 25,425
• Recurrent tumor: 25,543
Oropharynx (per patient):
• Primary tumor: 25,679
• Recurrent tumor: 25,145
8. Fisher, 2018 [36] 2016 United States of America US Dollars (USD) Oral cavity; oropharynx; hypopharynx/larynx; salivary glands; nasopharynx; other/unknown Not reported Not applicable Monthly health care costs (average ± standard deviation):
Total costs: 14,391 ± 19,510
• Hospitalization: 8,136 ± 16,880
• Emergency visits: 433 ± 1,259
• Office visits: 123 ± 109
• Systemic anticancer therapy: 2,875 ± 5,259
• Medical oncology procedures: 2,415 ± 6,962
• Infused supportive care drugs: 232 ± 479
All other drugs delivered: 178 ± 242
9. Nijdam, 2005 [32] 2001 The Netherlands Euros (EUD) Oropharynx Oropharynx (average):
• BT group*: 18,001
• S group*: 28,130
• EBRT group*: 21,143
Not applicable Not available
10. Amarasinghe, 2019 [18] 2016 Sri Lanka US Dollars (USD) Lip; other and unspecified parts of tongue; floor of mouth; palate; other and unspecified parts of mouth Lip, tongue, and mouth (average)– 1-year follow-up:
Stage II:
    System cost:
• Recurrent costs: 381
• Capital cost: 13
Household:
• Direct costs: 256
• Indirect costs: 263
Stage III and IV:
System cost:
• Recurrent costs: 2,011
• Capital cost: 13
Household:
• Direct costs: 217
• Indirect costs: 263
Lip, tongue, and mouth per patient (average)– 1-year follow-up:
• Stage II: 912
• Stage III/IV: 2,507
Not available
11. Goyal, 2014 [33] 2011/2012 India Rupees (INR) Lip; other and unspecified parts of tongue; floor of mouth; buccal mucosa; retromolar trigone Hospitalization (average ± standard deviation): 1,46,092 ± 37,325 Hospitalization (average):
• Stage I: 1,49,995
• Stage II: 1,41,621
• Stage III: 1,82,859
Not available
12. Zavras, 2002 [37] 2001 Greece US Dollars (USD) Upper lip, inner aspect; lower lip, inner aspect; lip, unspecified, inner aspect; commissure of lip; overlapping lesion of lip; lip, unspecified; base of tongue; other and unspecified parts of tongue; gum; floor of mouth; palate; other and unspecified parts of mouth Average per patient: 7,450 Average:
• Stage I: 3,662
• Stage II: 5,867
• Stage III: 10,316
• Stage IV: 11,467
Not available
13. van der Linden, 2016 [38] 2013 The Netherlands Euros (EUR) Oral cavity; oropharynx; hypopharynx; nasopharynx; larynx Not reported Not applicable Cost per treatment group (average ± standard deviation):
• Cisplatin + 5-fluorouracil + cetuximab: 39,459 ± 21,149
• Other platinum-based combination therapy: 38,584 ± 26,065
• Methotrexate monotherapy: 10,075 ± 9,891
• Capecitabine monotherapy: 10,585 ± 14,544
• Other: 17,506 ± 16,634
14. Epstein, 2008 [34] 2002 United States of America US Dollars (USD) Lip; other and unspecified parts of tongue; gum; floor of mouth; other and unspecified parts of mouth; oropharynx; pharynx; nasopharynx; hypopharynx; Waldeyer’s ring Oral and pharyngeal squamous cell carcinoma (median– 95%CI)– 1-year follow-up: 25,319 (21,825–27,665) Oral and pharyngeal squamous cell carcinoma (median):
• No treatment 9,763 (IR: 3,520–24,439)
• Early-stage treatment: 22,658 (IR: 10,425–42,664)
• Late-stage treatment: 27,665 (IR: 19,335–52,547)
Not available
15. Lafuma, 2019 [30] 2018 France Euros (EUR) Base of tongue; gum; floor of mouth; palate; tonsil; oropharynx; nasopharynx; piriform sinus; hypopharynx; larynx Not reported Not applicable Squamous cell carcinomas of the head and neck (average– 95%CI):
Total costs: 52,943
Direct costs: 49,954
• Ambulatory care: 17,047 (14,941–19,152)
• Inpatient care 32,908 (29,525–36,290)
• Public hospitals: 26,015 (22,716–29,314)
• Private for-profit hospitals: 6,892 (4,809–8,976)
Indirect costs: 2,989
• Disability: 1,397 (624–2,171)
• Sick leave: 1,592 (888–2,297)
16. Patterson, 2020 [31] 2017 Global, stratified by region and income Purchasing Power Parity (PPP) Lip; palate; base of tongue; other and unspecified parts of tongue; gum; floor of mouth; oral cavity; other and unspecified parts of mouth; tonsil; oropharynx; other pharynx; nasopharynx; larynx; thyroid Not reported Not applicable Projected global cumulative loss of 535 billion US dollars in economic output due to head and neck cancer between 2018 and 2030. Southeast Asia, East Asia, and Oceania will suffer the greatest GDP losses at 180 billion US Dollars, and South Asia will lose 133 billion US Dollars
17. Han, 2010 [39] 2007 China Chinese Yuans (CNY) Lip; other and unspecified parts of tongue; floor of mouth; palate; oral cavity; buccal mucosa; gingival tissues; retromolar trigon Squamous cell carcinoma (average ± standard deviation): 27,890 ± 11,032 Not applicable Squamous cell carcinoma (average ± standard deviation):
• Diagnosis: 3,465 ± 1,059
• Treatment: 19,995 ± 9,701
• Hospitalization: 4,429 ± 1,618
18. Enomoto, 2015 [40] 2009 United States of America US Dollars (USD) Lip; base of tongue; other and unspecified parts of tongue; gum; floor of mouth; tonsil; oropharynx; salivary gland; nasopharynx; hypopharynx Not reported Not applicable Cost per patient ≤ 30 days before death (average):
Oral cavity:
• Hospice: 7,880
• Non hospice: 14,990
Oropharynx:
• Hospice: 8,790
• Non hospice: 16,390
19. Lairson, 2017 [41] 2015 United States of America US Dollars (USD) Base of tongue; soft palate; uvula; lingual tonsil; oropharynx; pharynx otherwise unspecified Oropharynx: 134,454 ± 108,635 Not applicable Cost per patient (average ± standard deviation) - 2-year follow-up:
Oropharynx:
• Inpatient: 24,341 ± 48,972
• Outpatient: 106,604 ± 82,221
• Outpatient prescription drugs: 3,550 ± 5,183
• Surgery: 8,320 ± 15,111
• Radiotherapy: 50,362 ± 28,928
• Chemotherapy: 3,277 ± 2,822
20. Kim, 2020 [19] 2015 Korea US Dollars (USD) Lip; base of tongue; other and unspecified parts of tongue; gum; floor of mouth; palate; other and unspecified parts of mouth; tonsil; oropharynx; piriform sinus; hypopharynx; ill-defined and unspecified sites of lips, oral cavity, and pharynx *Average per patient: 20,107 --- Total cost: 1,248 billion
• Male: 1,057 billion
• Female: 190,9 million
Cross-sectional studies based on information system data
21. Vatanasapt 2012 [20] 2010 Thailand Baths (THB) Other and unspecified parts of mouth; oral cavity; oropharynx; nasopharynx; hypopharynx; pharynx; larynx; parathyroid gland; eternal and middle ear; malignant melanoma; non-melanoma skin cancer; benign neoplasms Average per hospitalization (95%CI):
• Oral cavity: 29,531 (28,316–30,745)
• Oropharynx: 26,331 (23,995–28,668)
• Ill-defined sites in oral cavity and pharynx: 19,356 (14,621–24,090)
Not applicable Total cost of hospitalization:
• Oral cavity: 191,685,473 (n = 6,491)
• Oropharynx: 37,258,803 (n = 1,415)
• Ill-defined sites in oral cavity and pharynx: 3,135,667 (n = 162)
22. Klussmann, 2013 [28] 2008 Germany Euros (EUR) Base of tongue; other and unspecified parts of tongue; gum; floor of mouth; palate; other and unspecified parts of mouth; oral cavity; tonsil; oropharynx; pharynx; nasopharynx; larynx * Average per hospitalization:
Oral cavity:
Direct costs:
• Hospitalization: 6,482
• Inpatient rehabilitation: 2,713
Indirect costs:
• Sick leave: 3,669
Oropharynx:
Direct costs:
• Hospitalization: 4,• 268
Inpatient rehabilitation: 2,705
Indirect costs:
• Sick leave: 3,263
Not applicable *Total cost:
Oral cavity: 131,019,446
• Direct costs: 113,268,892
    ○ Hospitalization: 109,503,702
    ○ Inpatient rehabilitation: 3,765,190
• Indirect costs: 17,750,554
    ○ Sick leave: 17,750,554
Oropharynx: 99,404,580
• Direct costs: 83,029,501
    ○ Hospitalization: 78,983,397
    ○ Inpatient rehabilitation: 4,046,104
• Indirect costs: 16,375,079
    ○ Sick leave: 16,375,079
23. Keeping, 2018 [21] 2011 England Pounds (GBP) Lip; base of tongue; other and unspecified parts of tongue; gum; floor of mouth; palate; oral cavity; other and unspecified parts of mouth; tonsil; oropharynx; larynx Not applicable Not applicable Total cost– 5 years:
Oral cavity: 98,330,746
• Inpatient: 94,876,001
• Outpatient: 3,454,745
Oropharynx: 114,619,227
• Inpatient: 108,738,446
• Outpatient: 5,880,781
24. Milani, 2021 [22] 2018 Brazil International Dollar (I$) Lip, base of tongue, other and unspecified parts of tongue, gum floor of mouth, palate, other and unspecified parts of mouth, tonsil, and oropharynx * Average per hospitalization: 1,376
• Lip: 655
• Oral cavity: 1,640
• Oropharynx: 1,338
Not applicable Total cost– 9 years: 495.6 million
• Inpatient: 244.0 million
    ○ Professional: 117.9 million
    ○ Hospital service: 92.5 million
    ○ Intensive care unit:33.6 million
• Outpatient: 251.6 million
Lip: 22.7 million
• Inpatient: 18.1 million
    ○ Professional: 9.2 million
    ○ Hospital service: 7.9 million
    ○ Intensive care unit: 1.0 million
• Outpatient: 4.6 million
Oral cavity: 257.1 million
• Inpatient: 139.1 million
    ○ Professional: 69.6 million
    ○ Hospital service: 55.2 million
    ○ Intensive care unit: 14.3 million
• Outpatient: 118.0 million
Oropharynx: 215.8 million
• Inpatient: 86.8 million
    ○ Professional: 39.1 million
    ○ Hospital service: 29.4 million
    ○ Intensive care unit: 18.3 million
• Outpatient: 129.0 million

US, United States; GDP, Gross Domestic Product; 95% CI, 95% Confidence Interval; BT group, Brachytherapy group; S group, Surgery group; EBRT group, External beam radiotherapy group; IR, interquartile ranges 25%-75%; NR, Non reported; NA, Not applicable.

* Average cost estimate per event and total cost calculated by the authors of the present study according to the data reported for both sees.