Skip to main content

Table 1 Characteristics of cases and controls in the two samples

From: Association of environmental markers with childhood type 1 diabetes mellitus revealed by a long questionnaire on early life exposures and lifestyle in a case–control study

 

Matched analysis sample

Propensity analysis sample

Cases

Controls

Cases

Controls

Number

469

624

1151

689

Age (years)

7.5 (4.2;10.5)

7.7 (4.6;10.5)

7.6 (4.2;10.6)

7.8 (4.6;10.5)

Delay (years)

3.0 (1.0;5.2)

2.9 (1.1;5.2)

2.9 (0.9;5.6)

3.0 (1.1;5.4)

Missing data (%)

4.4 (2.7;6.8)

3.9 (2.5;6.0)

4.9 (3.1;7.5)

3.8 (2.4;5.9)

  1. Age is the reference age. Delay is the time between the diagnosis date and the questionnaire reception. The values displayed are the median value and the first and third quartile between parentheses
Back to article page

BMC Public Health

ISSN: 1471-2458

Contact us