68 Chapter 4 with the highest frequencies of the primary diagnosis showed the following results: applicants with an ability to work fulltime were significantly more often diagnosed with diseases of the musculoskeletal system (37.5% vs. 14.8%), whereas applicants with an inability to work fulltime were more often diagnosed with neoplasms (11.2% vs. 3.2%), mental and behavioural disorders (30.9% vs. 28.6%), diseases of the nervous system (8.0% vs. 3.4%) and the circulatory system (12.0% vs. 5.0%). Although the majority of both groups were diagnosed with two or more diseases, multimorbidity was significantly more frequent in the applicants with an inability to work fulltime (54.5% vs. 51.5%) (see Table 1 for more detailed information). Table 1 Characteristics of the applicants, and differences between applicants with a normal ability and an inability to work fulltime Total group (n = 30,177) n (%) Ability to work fulltime (n = 18,284) n (%) Inability to work fulltime (n = 11,893) n (%) p-value Age (years) mean ± sd) 48.8 ± 11.0 48.5 ± 11.1 49.3 ± 10.9 <.001 Female gender 16,258 (53.9%) 9337 (51.1%) 6921 (58.2%) <.001 Education level <.001 Low 15,855 (52.5%) 10,407 (56.9%) 5448 (45.8%) Middle 9959 (33.0%) 5648 (30.9%) 4311 (36.2%) High 4363 (14.5%) 2229 (12.2%) 2134 (17.9%) Multimorbidity 15,893 (52.7%) 9415 (51.5%) 6478 (54.5%) < .001 Disease group No disease 13 (0.0%) 13 (0.1%) – .004 Infectious and parasitic diseases 142 (0.5%) 55 (0.3%) 87 (0.7%) < .001 Neoplasms 1908 (6.4%) 580 (3.2%) 1328 (11.2%) < .001 Diseases of the blood and bloodforming organs 307 (1.0%) 78 (0.4%) 229 (1.9%) < .001 Endocrine, nutritional and metabolic disorders 490 (1.6%) 272 (1.5%) 218 (1.8%) .020 Mental and behavioural disorders 8902 (29.5%) 5223 (28.6%) 3679 (30.9%) < .001 Diseases of the nervous system 1570 (5.2%) 615 (3.4%) 955 (8.0%) < .001 Diseases of the eye and adnexa 281 (0.9%) 182 (1.0%) 99 (0.8%) .150 Diseases of the ear and mastoid process 261 (0.9%) 154 (0.8%) 107 (0.9%) .599 Diseases of the circulatory system 2345 (7.8%) 912 (5.0%) 1433 (12.0%) < .001 Diseases of the respiratory system 790 (2.6%) 262 (1.4%) 528 (4.4%) < .001 Diseases of the digestive system 462 (1.5%) 182 (1.0%) 280 (2.4%) < .001 Diseases of the skin and subcutaneous tissue 134 (0.4%) 101 (0.6%) 33 (0.3%) < .001
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