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Table 4 The association between regular recreational physical activity and head and neck cancer by disease site

From: Regular recreational physical activity and risk of head and neck cancer

   Oral Cancer Pharyngeal Cancer Laryngeal Cancer
Regular recreational physical activity Control
N = 731
n (%)
Cases
N = 395
n (%)
OR (95% CI)a Cases
N = 154
n (%)
OR (95% CI)a Cases
N = 74
n (%)
OR (95% CI)a
Yes/No
 No regular exercise 397 (54.3) 265 (67.1) Reference 107 (69.5) Reference 42 (56.8) Reference
 Regular exercise 334 (45.7) 130 (32.9) 1.02 (0.74–1.41) 47 (30.5) 0.79 (0.49–1.27) 32 (43.2) 1.03 (0.58–1.85)
Intensity
 No regular exercise 397 (54.3) 265 (67.1) Reference 107 (69.5) Reference 42 (56.8) Reference
 light 10 (1.4) 5 (1.3) 0.91 (0.26–3.12) 1 (0.6) 0.27 (0.3–2.49) 4 (5.4) 2.45 (0.61–9.95)
 moderate 154 (21.1) 71 (17.9) 1.19 (0.80–1.78) 26 (16.9) 0.89 (0.49–1.61) 17 (23.0) 0.93 (0.46–1.87)
 vigorous 170 (23.3) 54 (13.7) 0.87 (0.58–1.32) 20 (13.0) 0.75 (0.41–1.38) 11 (14.8) 1.01 (0.45–2.24)
Frequency
 No regular exercise 397 (54.3) 265 (67.1) Reference 107 (69.5) Reference 42 (56.8) Reference
 3 days per week 60 (8.2) 23 (5.8) 1.34 (0.73–2.44) 11 (7.1) 1.44 (0.65–3.19) 4 (5.4) 1.19 (0.36–3.96)
 4–5 days per week 54 (7.4) 21 (5.3) 1.02 (0.54–1.92) 4 (2.6) 0.51 (0.16–1.59) 1 (1.3) 0.32 (0.04–2.55)
 6–7 days per week 220 (30.1) 86 (21.8) 0.95 (0.66–1.38) 32 (20.8) 0.70 (0.41–1.22) 27 (36.5) 1.14 (0.61–2.12)
Total MET-hours per week
 No regular exercise 397 (54.3) 265 (67.1) Reference 107 (69.5) Reference 42 (56.8) Reference
 0.1-10.0 64 (8.8) 29 (7.3) 1.07 (0.61–1.90) 11 (7.1) 0.90 (0.40–2.01) 3 (4.0) 0.43 (0.12–1.60)
 10.1-20.0 91 (12.4) 37 (9.4) 0.94 (0.58–1.53) 13 (8.4) 0.59 (0.28–1.23) 13 (17.6) 1.14 (0.52–2.51)
 20.1-30.0 64 (8.8) 22 (5.6) 0.91 (0.50–1.65) 8 (5.2) 1.03 (0.43–2.48) 8 (10.8) 1.37 (0.54–3.47)
  > 30.0 115 (15.7) 42 (10.6) 1.16 (0.72–1.87) 15 (9.8) 0.84 (0.42–1.70) 7 (9.5) 1.10 (0.42–2.87)
 Unknown 0 (0.0) 0 (0.0) -- 0 (0.0) -- 1 (1.3) --
Total years of regular exercise
 No regular exercise 397 (54.3) 265 (67.1) Reference 107 (69.5) Reference 42 (56.8) Reference
 0.1-5.0 165 (22.6) 76 (19.2) 0.97 (0.67–1.42) 24 (15.6) 0.71 (0.41–1.25) 14 (18.9) 0.79 (0.39–1.62)
 5.1-10.0 92 (12.6) 24 (6.1) 0.70 (0.40–1.24) 12 (7.8) 0.92 (0.43–1.96) 10 (13.5) 1.74 (0.73–4.14)
  > 10.0 77 (10.5) 30 (7.6) 1.87 (1.06–3.28) 11 (7.1) 0.91 (0.39–2.11) 8 (10.8) 1.14 (0.41–3.14)
  1. Abbreviations: CI confidence interval, N number, OR odds ratio
  2. aOR and 95% CI were calculated using unconditional logistic regression, adjusted for sex, age, education, cigarette smoking (pack-year categories), betel quid chewing (pack-year categories), alcohol drinking (frequency), and intake of vegetables and fruits
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