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Table 1 Baseline characteristics of the asthmatic patients with asthma and controls.

From: Association study between vitamin D receptor gene polymorphisms and asthma in the chinese han population: a case-control study

Characteristics

Patients(n = 567)

Controls (n = 523)

Samples origins and

Weifang (n = 424) 195/229

SPH (n = 308) 217/91

Sex distribution(male/female)

Qilu Hospital(n = 143) 58/85

Qilu Hospital (n = 215) 143/72

Age: mean (range)

41.36 (4–77)

44.18 (18–79)

FEV1, % predicted

56.48 ± 16.8

85.98 ± 12.2

Changes in FEV1 by bronchodilator, %

28.28 ± 14.6

4.38 ± 3.9

Total frequency of females

55.4%

33.3%

Total frequency of males

44.6%

66.6%

  1. SPH stands for Shandong Provincial Hospital