Table 1 Distribution of demographics and habits for head and neck squamous cell carcinoma cases and controls.

From: Allergies and risk of head and neck cancer: a case–control study

Characteristics

Case (300)

Control (379)

P-value

Gender

 Men

224 (74.67)

278 (73.35)

 

 Women

76 (25.33)

101 (26.65)

0.90

Age

 < 60

217 (57.26)

160 (52.63)

 

 ≥ 60

162 (42.74)

144 (47.37)

0.23

Place of residence

 Capital city

208 (69.33)

288 (75.99)

 

 Non-capital city

92 (30.67)

91 (24.01)

0.02

Regular tobacco smoking*

 Yes

161 (53.67)

114 (30.08)

 

 No

139 (46.33)

265 (69.92)

 < 0.0001

Regular alcohol user*

 Yes

24 (8)

17 (4.49)

 

 No

276 (92)

362 (95.51)

0.07

Regular opium user*

 Yes

114 (38)

48 (12.66)

 

 No

186 (62)

331 (87.34)

 < 0.0001

Socioeconomic status

 Low

173 (57.67)

151 (39.84)

 

 High

127 (42.33)

228 (60.16)

 < 0.0001

DMFT

  < 20 (Good oral health)

100 (33.33)

186 (49.08)

 

 ≥ 20 (Poor oral health)

200 (66.67)

193 (50.92)

 < 0.0001

Cancer sub-sites

 Lip and oral cavity

130 (43.33)

 

 Pharynx

33 (11)

 

 Larynx

122 (40.67)

 

 Other HNC

15 (5)

 
  1. *Regular opium user was defined as using opium at least once a week for at least 6 consecutive months.
  2. *Regular tobacco smoking was defined as smoking tobacco at least once a week for at least 6 consecutive months.
  3. *Regular alcohol drinking was defined as drinking any alcohol at least once a week for at least 6 consecutive months.