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Table 1 Selected characteristics of the study population according to cases and controls

From: Smoking and prostate cancer: a life course analysis

Characteristics

Cases (n = 394)

Controls (n = 794)

p valuea

Marital status (%)

 Unitedb

304 (77.2%)

636 (80.1%)

0.24

 Not united

90 (22.8%)

158 (19.9%)

Educational level (%)

 Elementary school or less

177 (44.9%)

358 (45.1%)

< 0.001

 Junior high school

66 (16.7%)

199 (25.1%)

 High school

70 (17.8%)

144 (18.1%)

 University or more

81 (20.6%)

93 (11.7%)

History of chronic diseasesc (%)

 Yes

229 (58.1%)

327 (41.2%)

< 0.001

 No

165 (41.9%)

467 (58.8%)

History of STDd (%)

 Yes

105 (26.7%)

87 (11.0%)

< 0.001

 No

288 (73.1%)

706 (88.9%)

 Missing

1 (0.2%)

1 (0.1%)

Family history of PCe (%)

 Yes

41 (10.2%)

20 (2.6%)

< 0.001

 No

353 (89.6%)

774 (97.5%)

Dairy consumption (portion/d) (%)

 Low

124 (32.1%)

286 (36.7%)

0.004

 Middle

104 (26.1%)

251 (31.1%)

 High

166 (41.8%)

257 (32.2%)

Energy

 Mean ± SD

2172.13 ± 717.81

1959.28 ± 681.88

< 0.001

Life course PA patternsf (%)

 None

58 (14.7%)

74 (9.3%)

< 0.001

 A

98 (24.9%)

135 (17.0%)

 B

218 (55.3%)

532 (67.0%)

 C

20 (5.1%)

53(6.7%)

  1. at-test or χ2 test
  2. bUnited: Married and common law
  3. cHistory of hypertension, diabetes and/or dyslipidemia
  4. dHistory of sexual transmitted diseases
  5. eFamily history of PC in first degree relatives
  6. fPattern A, males who had high PA intensity at 15-18 years old and decreased over their life course; Pattern B, males who maintained a constantly low PA intensity and Pattern C, males with constantly high PA intensity