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Table 2 Sunlight exposure patterns of 1,904 cases and 1,962 controls, PROtEuS, Montreal, Canada

From: Sunlight exposure during leisure activities and risk of prostate cancer in Montréal, Canada, 2005–2009

Exposure

Cases n (%)

Controls n (%)

p-values

Individual types of outdoor leisure activities a

     

 Walking

1206

(75.2)

1246

(63.5)

0.91b

 Jogging

427

(26.6)

467

(23.8)

0.31b

 Golf

427

(26.6)

449

(22.9)

0.73b

 Racket sports

538

(33.5)

527

(26.9)

0.33b

 Swimming

474

(29.6)

450

(22.9)

0.15b

 Skiing/skating

893

(55.7)

842

(42.9)

0.01b*

 Cycling

1108

(69.1)

1037

(52.9)

<0.01b*

 Gardening

765

(47.7)

799

(40.7)

0.73b

 Domestic chores demanding physical effort

1562

(97.4)

1605

(81.8)

0.85b

 Other

367

(19.3)

420

(21.4)

0.10b

Number of different types of outdoor leisure activities a

    

0.29c

 0

55

(2.9)

52

(2.7)

 

 1-3

678

(35.6)

751

(38.3)

 

 4-11

1171

(61.5)

1159

(59.1)

 

Cumulative number of sunlight exposure events (CEvents) a

    

0.30c

 None: 0

55

(2.9)

52

(2.7)

 

 Q1: 1–3,210

506

(26.6)

478

(24.4)

 

 Q2: 3,211-6,642

438

(23.0)

477

(24.3)

 

 Q3: 6,643-13,679

474

(24.9)

477

(24.3)

 

 Q4: 13,680-94,886.67

431

(22.6)

478

(24.4)

 

Cumulative number of hours exposed to sunlight (CDuration) a

    

0.30c

 None: 0

55

(2.9)

52

(2.7)

 

 Q1: 1–4,497

483

(25.4)

478

(24.4)

 

 Q2: 4,498-9,711

467

(24.5)

477

(24.3)

 

 Q3: 9,712-18,459

489

(25.7)

476

(24.3)

 

 Q4: 18,460-103,484

410

(21.5)

479

(24.4)

 

Self-reported sunlight exposure during leisure

    

0.03b*

 Never

105

(5.5)

117

(6.0)

 

 Sometimes

708

(37.2)

804

(41.0)

 

 Often

1091

(57.3)

1041

(53.1)

 

Self-reported sunlight exposure at work

    

0.12b

 Never

1238

(65.0)

1318

(67.2)

 

 Sometimes

345

(18.1)

307

(15.6)

 

 Often

321

(16.9)

337

(17.2)

 

Use of solar protection during leisure

    

0.05b

 Never

1009

(53.0)

977

(49.8)

 

 Sometimes

485

(25.5)

502

(25.6)

 

 Often

410

(21.5)

483

(24.6)

 

Use of solar protection at work

    

0.15b

 Never

1643

(86.3)

1684

(85.8)

 

 Sometimes

116

(6.1)

101

(5.1)

 

 Often

145

(7.6)

177

(9.0)

 
  1. aExposure between 18 years old and age diagnosis for cases or age at interview for controls. bChi-square test. cT test. *p-value lower than 0.05.