Odds ratios (OR) estimates, with 95% confidence intervals (CI), for “low-count” CLL-like monoclonal B-cell lymphocytosis (60 out of 72 cases) by previous associated factors.

1Adjusted for age (<50, 50–59, 60–69, 70+) and sex. 2Further adjusted for number of children (<2; 3 or more; missing). 3Further adjusted for number of siblings (categories: <2; 3 or more; missing). 4Among 60 years old and older,Ncontrols = 189; Ncases = 49. 5Further adjusted for family size (using the total number of children and siblings; categories: <6; 6 or more; missing). 6Further adjusted for number of brothers (<3; 3 or more; missing). Ref: reference group; N: number; OR: Odds ratio; CI: confidence interval; SD: standard deviation.