Table 4

Case-referent evaluations of data on reproduction and breast feeding in women (179 cases of RA and 259 referents) from southeastern Sweden, 1980–95, with adjustment for age

  • 4-150 OC = oral contraceptive; OR = Mantel-Haenszel odds ratio; CI = confidence interval as outlined by Robins et al.36

  • 4-151 Menarche at age 13–15.

  • 4-152 Menopause at age 48–53.

  • 4-153 Fertile period of 34–40 years.

  • 4-155 At time of diagnosis of RA.

  • 4-154 Before onset of RA symptoms.

  • 4-160 Adjustment also for marital status.

  • 4-164 Adjustment also for marital status and socioeconomic status.

  • 4-161 Parous women having never breast fed.