Table 1 Demographic characteristics of incident hypothyroidism cases
Overall (N = 466,362) | Non- cases (N = 455,531) | Cases (N = 10,831) | ||
|---|---|---|---|---|
Diet | High meat eaters | 220,514/466,362 (47.3%) | 215,786/455,531 (47.4%) | 4728/10,831 (43.7%) |
Low meat eaters | 221,554/466,362 (47.5%) | 216,073/455,531 (47.4%) | 5481/10,831 (50.6%) | |
Poultry eaters | 5242/466,362 (1.1%) | 5101/455,531 (1.1%) | 141/10,831 (1.3%) | |
Pescatarians | 10,598/466,362 (2.3%) | 10,342/455,531 (2.3%) | 256/10,831 (2.4%) | |
Vegetarians | 8057/466,362 (1.7%) | 7844/455,531 (1.7%) | 213/10,831 (2.0%) | |
Vegans | 397/466,362 (0.1%) | 385/455,531 (0.1%) | 12/10,831 (0.1%) | |
Sex | Female | 245,810/466,362 (52.7%) | 238,102/455,531 (52.3%) | 7708/10,831 (71.2%) |
Male | 220,552/466,362 (47.3%) | 217,429/455,531 (47.7%) | 3123/10,831 (28.8%) | |
Age | 56.41 (8.11) | 56.36 (8.12) | 58.33 (7.68) | |
Ethnicity | White | 440,650/466,361(94.5%) | 430,399/455,530 (94.5%) | 10,251/10,831 (94.6%) |
Mixed | 2761/466,361 (0.6%) | 2706/455,530 (0.6%) | 55/10,831 (0.5%) | |
Asian | 10,054/466,361 (2.2%) | 9771/455,530 (2.1%) | 283/10,831 (2.6%) | |
Black | 7268/466,361 (1.6%) | 7145/455,530 (1.6%) | 123/10,831 (1.1%) | |
Unknown | 5629/466,361 (1.2%) | 5510/455,530 (1.2%) | 119/10,831 (1.1%) | |
Average Income | Greater than 100,000 | 22,085/466,362 (4.7%) | 21,822/455,531 (4.8%) | 263/10,831 (2.4%) |
52,000 to 100,000 | 82,604/466,362 (17.7%) | 81,330/455,531 (17.9%) | 1274/10,831 (11.8%) | |
31,000 to 51,999 | 104,910/466,362 (22.5%) | 102,863/455,531 (22.6%) | 2047/10,831 (18.9%) | |
18,000 to 30,999 | 100,651/466,362 (21.6%) | 98,174/455,531 (21.6%) | 2477/10,831 (22.9%) | |
Less than 18,000 | 88,193/466,362 (18.9%) | 85,439/455,531 (18.8%) | 2754/10,831 (25.4%) | |
Unknown | 67,919/466,362 (14.6%) | 65,903/455,531 (14.5%) | 2016/10,831 (18.6%) | |
Education | High | 220,046/466,362 (47.2%) | 215,664/455,531 (47.3%) | 4382/10,831 (40.5%) |
Medium | 84,778/466,362 (18.2%) | 82,913/455,531 (18.2%) | 1865/10,831 (17.2%) | |
Low | 153,454/466,362 (32.9%) | 149,144/455,531 (32.7%) | 4310/10,831 (39.8%) | |
Unknown | 8084/466,362 (1.7%) | 7810/455,531 (1.7%) | 274/10,831 (2.5%) | |
Smoking status | Current | 51,258/487,524 (10.5%) | 48,841/463,391 (10.5%) | 2417/24,133 (10.0%) |
Previous | 168,382/487,524 (34.5%) | 159,317/463,391 (34.4%) | 9065/24,133 (37.6%) | |
Never | 266,211/487,524 (54.6%) | 253,658/463,391 (54.7%) | 12,553/24,133 (52.0%) | |
Unknown | 1673/487,524 (0.3%) | 1575/463,391 (0.3%) | 98/24,133 (0.4%) | |
BMI (kg/m2) | 27.35 (4.74) | 27.33 (4.72) | 28.28 (5.33) | |
Unknown | 2,440 | 2,351 | 89 | |
Physical activity | High | 112,200/466,362 (24.1%) | 109,792/455,531 (24.1%) | 2408/10,831 (22.2%) |
Moderate | 183,815/466,362 (39.4%) | 179,983/455,531 (39.5%) | 3832/10,831 (35.4%) | |
Low | 66,297/466,362 (14.2%) | 64,668/455,531 (14.2%) | 1629/10,831 (15.0%) | |
Unknown | 104,050/466,362 (22.3%) | 101,088/455,531 (22.2%) | 2962/10,831 (27.3%) | |
Thyroid impairing drugs | 1668/466,362 (0.4%) | 1544/455,531 (0.3%) | 124/10,831 (1.1%) |