Table 1 Characteristics of participants, overall and stratified by perceived level of stress at baseline.

From: Perceived stress level and risk of cancer incidence in a Japanese population: the Japan Public Health Center (JPHC)-based Prospective Study

 

Overall

Perceived stress level at baseline

Low

Medium

High

Total n

101,708

16,167

64,180

21,361

Age, mean ± S.D

52.8 ± 8.1

55.0 ± 8.6

53.2 ± 8.0

50.0 ± 7.0

Years of follow-up, mean ± S.D

17.8 ± 5.9

17.3 ± 5.8

17.8 ± 5.8

17.8 ± 6.0

Sex, n (%) of males

48588 (47.8)

7161 (44.3)

30059 (46.8)

11368 (53.2)

Body mass index level

<18.5 kg/m2

4369 (4.30)

690 (4.27)

2768 (4.31)

911 (4.26)

18.5–25 kg/m2

69579 (68.4)

10836 (67.0)

44018 (68.6)

14725 (68.9)

25–30 kg/m2

25081 (24.7)

4142 (25.6)

15787 (24.6)

5152 (24.1)

>30 kg/m2

2643 (2.60)

496 (3.07)

1586 (2.47)

561 (2.63)

Missing

36 (0.04)

3 (0.02)

21 (0.03)

12 (0.06)

Alcohol consumption

Never

51242 (50.4)

8886 (55.0)

33263 (51.8)

9093 (42.6)

Rare (<1 time/week)

9543 (9.38)

1308 (8.09)

6004 (9.35)

2231 (10.4)

<23 g/day

7743 (7.61)

1118 (6.92)

4563 (7.11)

2062 (9.65)

23–46 g/day

12001 (11.8)

1720 (10.6)

7361 (11.5)

2920 (13.7)

47–69 g/day

8751 (8.60)

1178 (7.29)

5366 (8.36)

2207 (10.3)

70–92 g/day

6062 (5.96)

898 (5.55)

3808 (5.93)

1356 (6.35)

>92 g/day

4822 (4.74)

767 (4.74)

2783 (4.34)

1272 (5.95)

Missing

1544 (1.52)

292 (1.81)

1032 (1.61)

220 (1.03)

Smoking status

Non-smoker

60033 (59.0)

10121 (62.6)

38691 (60.3)

11221 (52.5)

Former smoker

12285 (12.1)

1940 (12.0)

7559 (11.8)

2786 (13.0)

Current smoker

28908 (28.4)

4037 (25.0)

17597 (27.4)

7274 (34.1)

Missing

482 (0.47)

69 (0.43)

333 (0.52)

80 (0.37)

Fruit intake amount

1st quartile (lowest)

25658 (25.2)

4359 (27.0)

15858 (24.7)

5441 (25.5)

2nd quartile

22993 (22.6)

3559 (22.0)

14510 (22.6)

4924 (23.1)

3rd quartile

23966 (23.6)

4079 (25.2)

15245 (23.8)

4642 (21.7)

4th quartile (highest)

25175 (24.8)

3575 (22.1)

16242 (25.3)

5358 (25.1)

Missing

3916 (3.85)

595 (3.68)

2325 (3.62)

996 (4.66)

Vegetable intake amount

1st quartile (lowest)

27077 (26.6)

4894 (30.3)

16700 (26.0)

5483 (25.7)

2nd quartile

26416 (26.0)

4933 (30.5)

16357 (25.5)

5126 (24.0)

3rd quartile

15419 (15.2)

2397 (14.8)

9758 (15.2)

3264 (15.3)

4th quartile (highest)

32572 (32.0)

3909 (24.2)

21228 (33.1)

7435 (34.8)

Missing

224 (0.22)

34 (0.21)

137 (0.21)

53 (0.25)

Occupation

Professional or office workers

24794 (24.4)

3150 (19.5)

13795 (21.5)

7849 (36.7)

Sales clerks or others

22959 (22.6)

2954 (18.3)

14159 (22.1)

5846 (27.4)

Famers

21382 (21.0)

4130 (25.6)

14647 (22.8)

2605 (12.2)

Other

10341 (10.2)

1036 (6.41)

7078 (11.0)

2227 (10.4)

Unemployed incl. housewives

21263 (20.9)

4768 (29.5)

13808 (21.5)

2687 (12.6)

Missing

969 (0.95)

129 (0.80)

693 (1.08)

147 (0.69)

Physical activity

Almost none

70571 (69.4)

10843 (67.1)

44735 (69.7)

14993 (70.2)

1–3 times/month

11359 (11.2)

1463 (9.05)

7065 (11.0)

2831 (13.3)

1–2 times/week

9397 (9.24)

1634 (10.1)

5820 (9.07)

1943 (9.10)

3–4 times/week

4322 (4.25)

909 (5.62)

2699 (4.21)

714 (3.34)

Almost everyday

4991 (4.91)

1146 (7.09)

3121 (4.86)

724 (3.39)

Missing

1068 (1.05)

172 (1.06)

740 (1.15)

156 (0.73)

Family history of cancer (parents/siblings)

No

79744 (78.4)

12774 (79.0)

50891 (79.3)

16079 (75.3)

Yes

21964 (21.6)

3393 (21.0)

13289 (20.7)

5282 (24.7)

Living arrangement: living alone

No

97197 (95.6)

15201 (94.0)

61469 (95.8)

20527 (96.1)

Yes

4170 (4.10)

919 (5.68)

2455 (3.83)

796 (3.73)

Missing

341 (0.34)

47 (0.29)

256 (0.40)

38 (0.18)

Level of life enjoyment

Low

8707 (8.56)

670 (4.14)

3755 (5.85)

4282 (20.1)

Medium

48644 (47.8)

4517 (27.9)

33009 (51.4)

11118 (52.1)

High

41770 (41.1)

9936 (61.5)

26159 (40.8)

5675 (26.6)

Missing

2587 (2.54)

1044 (6.46)

1257 (1.96)

286 (1.34)

Sleep hours

≤6 hours

4516 (4.44)

567 (3.51)

2464 (3.84)

1485 (6.95)

7–8 hours

86767 (85.3)

13071 (80.9)

55289 (86.2)

18407 (86.2)

≥9 hours

8181 (8.04)

1746 (10.8)

5227 (8.14)

1208 (5.66)

Missing

2244 (2.21)

783 (4.84)

1200 (1.87)

261 (1.22)

Type A behavior pattern

Low overall index

22338 (22.0)

4534 (28.0)

13529 (21.1)

4275 (20.0)

Medium overall index

36798 (36.2)

5192 (32.1)

25937 (40.4)

5669 (26.5)

High overall index

15041 (14.8)

2057 (12.7)

9380 (14.6)

3604 (16.9)

Very high overall index

19889 (19.6)

2339 (14.5)

10773 (16.8)

6777 (31.7)

Missing

7642 (7.51)

2045 (12.7)

4561 (7.11)

1036 (4.85)