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Table 1 Participant characteristics 1979–2008

From: Secular trends and correlates of physical activity: The Tromsø Study 1979-2008

  1979-80 1986–87 1994–95 2001 2007–08
n (%) n (%) n (%) n (%) n (%)
Total 16,546 (100) 20,600 (100) 20,305 (100) 5296 (100) 11,410 (100)
Sex (female) 8112 (49.0) 10,221 (49.6) 10,392 (51.2) 3002 (56.7) 5880 (51.5)
Age (years) 20–54 (men)
20–49 (women)
20–61 25–89 30–69 30–87
 20–29 5597 (33.8) 5331 (25.9) 2626 (12.9)   
 30–39 6263 (37.8) 6798 (33.0) 5647 (27.8) 557 (10.5) 464 (4.1)
 40–49 3766 (22.8) 5120 (24.9) 5510 (27.1) 1249 (23.6) 3400 (29.8)
 50–59 920 (5.6) 2966 (14.4) 3351 (16.5) 1018 (19.2) 2285 (20.0)
 60–69   385 (1.9) 1259 (6.2) 2472 (46.7) 3645 (31.9)
 70–79    1530 (7.5)   1349 (11.8)
 80–89    382 (1.9)   267 (2.3)
LTPA
 Inactive 3427 (20.7) 4813 (23.4)   1047 (19.8) 2295 (20.1)
 Light physical activity 9212 (55.7) 11,907 (57.8)   3466 (65.4) 6797 (59.6)
 Moderate physical activity 3351 (20.3) 3314 (16.1)   703 (13.3) 2129 (18.7)
 Vigorous physical activity 556 (3.4) 566 (2.7)   80 (1.5) 189 (1.7)
WPA
 Mostly sedentary 5813 (35.1) 8197 (39.8) 8838 (43.5) 2081 (39.3) 4428 (38.8)
 Walking 6456 (39.0) 7193 (34.9) 5793 (28.5) 1228 (23.2) 2123 (18.6)
 Walking and lifting 3187 (19.3) 4042 (19.6) 4344 (21.4) 848 (16.0) 1524 (13.4)
 Heavy manual labour 1078 (6.5) 1151 (5.6) 1330 (6.6) 194 (3.7) 295 (2.6)
 Missing 12 (0.1) 17 (0.1)   945 (17.8) 3040 (26.6)
BMI (kg/m2)
 < 18.5 402 (2.4) 407 (2.0) 252 (1.2) 37 (0.7) 62 (0.5)
 18.5–24.9 11,370 (68.7) 13,568 (65.9) 10,752 (53.0) 2000 (37.8) 4004 (35.1)
 25–29.9 3878 (23.4) 5579 (27.0) 7373 (36.3) 2273 (42.9) 5063 (44.4)
 ≥ 30 535 (3.2) 1020 (5.0) 1903 (9.4) 966 (18.2) 2271 (19.9)
 Missing 361 (2.2) 26 (0.1) 25 (0.1) 20 (0.4) 10 (0.1)
Education level
 ≤ 9 years 6048 (36.6) 6534 (31.7) 5777 (28.5) 1934 (36.5) 2911 (25.5)
 10–12 years 4307 (26.0) 6186 (30.0) 7540 (37.1) 1450 (27.4) 3837 (33.6)
 > 12 years 4013 (24.3) 6191 (30.1) 6934 (34.1) 1814 (34.3) 4563 (40.0)
 Missing 2178 (13.2) 1689 (8.2) 54 (0.3) 98 (1.9) 99 (0.9)
Smoking
 No 8847 (51.1) 11,004 (53.4) 13,078 (64.4) 3643 (68.8) 8986 (78.8)
 Yes 8098 (48.9) 9595 (46.6) 7194 (35.4) 1627 (30.7) 2286 (20.0)
 Missing 1 (0.0) 1 (0.0) 33 (0.2) 27 (0.5) 138 (1.2)
Cardiovascular disease
 No 16,410 (99.2) 20,207 (98.1) 19,259 (94.8) 4749 (89.7) 10,127 (88.8)
 Yes 135 (0.8) 389 (1.9) 1020 (5.0) 440 (8.3) 1060 (9.3)
 Missing 2 (0.0) 4 (0.0) 26 (0.1) 107 (2.0) 223 (2.0)
Employed
 No 16,013 (96.8) 19,872 (96.5) 19,769 (97.4) 3692 (69.7) 11,356 (99.5)
 Yes 519 (3.1) 722 (3.5) 536 (2.6) 57 (1.1) 54 (0.5)
 Missing 14 (0.1) 6 (0.0)   1547 (29.2)  
Self-perceived healtha
 Very bad   42 (0.2)   78 (1.5) 31 (0.3)
 Bad   502 (2.4)   1553 (29.3) 501 (4.4)
 Neither good nor bad   3077 (814.9)    3089 (27.1)
 Good   9830 (47.7)   2977 (56.2) 5942 (52.1)
 Excellent   5119 (24.8)   635 (12.0) 1776 (15.6)
 Missing   2030 (9.9)   53 (1.0) 71 (0.6)
  1. aIn 1994–05 and 2001, the alternatives were “poor”, “not so good”, “good”, and “very good”
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