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Table 1 Baseline characteristics according to sleep duration in ageing men

From: Sleep duration and incidence of lung cancer in ageing men

 

Sleeping hours

p-value

 

≤6.5 h

7-7.5 h

≥8 h

 

(n = 501)

(n = 1066)

(n = 1019)

 

Age (years)

54.3 (48.9-54.5)

54.3 (48.8-54.5)

54.3 (54.2-54.6)

0.075a

Smoking prevalence (%)

194 (38.7)

315 (29.5)

322 (31.6)

<0.001b

Smoking (pack-years)

0 (0–378.0)

0 (0–81.9)

0 (0–204.0)

0.001a

Alcohol (g/wk)

34.2 (6.6-104.4)

31.9 (6.6-86.3)

27.8 (4.7-16.2)

0.208a

Physical activity (kcal/d)

80.1 (27.6-201.4)

84.9 (30.8-199.2)

85.0 (27.2-344.0)

0.831a

Body mass index (kg/m2)

26.6 (24.5-29.5)

26.2 (24.3-28.3)

26.8 (24.7-29.4)

<0.001a

Education (years)

8.0 (6.0-10)

8.0 (6.0-10.0)

8.0 (6.0-9.0)

<0.001a

HPL scores ≥5 (%)

68 (14.0)

84 (8.0)

79 (7.9)

<0.001b

Family cancer history (%)

119 (23.8)

259 (23.8)

248 (24.3)

0.965b

Marital status (alone %)

35 (7.0)

62 (5.8)

73 (7.2)

0.425b

Night work (%)

113 (22.6)

160 (15.0)

181 (17.8)

0.001b

Unemployed/retired (%)

147 (29.3)

255 (23.9)

379 (37.2)

<0.001b

Asthma (%)

15 (3.0)

34 (3.2)

43 (4.2)

0.341b

Chronic bronchitis (%)

48 (9.6)

65 (6.1)

69 (6.8)

0.040b

Frequent insomnia (%)

161 (33.0)

115 (10.9)

91 (9.1)

<0.001b

Breathing disruptions (%)

84 (17.0)

116 (11.0)

119 (11.8)

0.003b

  1. Values are given as median (25th-75th percentile), or as n and proportion (%).
  2. aKruskal-Wallis median test.
  3. bχ 2 test.
  4. Abbreviations: HPL Human Population Laboratory Depression Scale.