A nationwide study on reproductive function, ovarian reserve, and risk of premature menopause in female survivors of childhood cancer: design and methodological challenges

Table 4 Factors associated with the probability of completing the web-based version of the questionnaire: results of logistic regression*

	OR (95% CI)
Age	1.08 (1.02-1.15)
Educational level (ref. group: High level)
Medium	0.65 (0.28-1.53)
Low	0.06 (0.01-0.52)
Employment status (ref. group: Employed)
Student	3.25 (1.00-10.56)
Unemployed	0.35 (0.10-1.29)
Randomization group (ref. group: Mixed invitation group)	2.85 (1.31-6.21)

OR, odds ratio; CI, confidence interval.
* Derived from Van den Berg MH et al. Using web-based and paper-based questionnaires for collecting data on fertility issues among female cancer survivors: differences in response characteristics. J Med Internet Res. 2011 Sep 29;13(3):e76.

ISSN: 1471-2407