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Table 2 Cross-sectional association between woman’s income and past year experience of physical IPV, sexual IPV and economic abuse at baselinea (n = 740)

From: Women’s income and risk of intimate partner violence: secondary findings from the MAISHA cluster randomised trial in North-Western Tanzania

  Past year physical IPV at baseline Past year sexual IPV at baseline Past year economic abuse at baseline
n/N (%) Age-adjusted OR (95%CI) aORc (95%CI) n/N (%) Age-adjusted OR (95%CI) aORc (95%CI) n/N (%) Age-adjusted OR (95%CI) aORd (95%CI)
Monthly incomeb
 1st quartile (< 60 USD) 64/206 (31%) 49/206 (24%) 77/206 (37%)
 2nd quartile (60–119 USD) 46/199 (23%) 0.68 (0.46–1.00) 0.74 (0.49–1.12) 40/199 (20%) 0.82 (0.50–1.36) 0.88 (0.53–1.46) 88/199 (44%) 1.33 (0.91–1.96) 1.46 (0.97–2.19)
 3rd quartile (120–234 USD) 23/145 (16%) 0.42 (0.27–0.65) 0.47 (0.30–0.75) 19/145 (13%) 0.50 (0.28–0.89) 0.54 (0.29–0.98) 38/145 (26%) 0.60 (0.36–1.01) 0.67 (0.39–1.16)
 4th quartile (> 235 USD) 24/132 (18%) 0.48 (0.28–0.84) 0.56 (0.32–0.98) 22/132 (17%) 0.65 (0.34–1.25) 0.71 (0.37–1.39) 43/132 (33%) 0.81 (0.50–1.32) 0.95 (0.57–1.59)
 Doesn’t know 7/27 (26%) 0.85 (0.36–2.03) 0.95 (0.35–2.55) 7/27 (26%) 1.24 (0.52–2.95) 1.57 (0.60–4.15) 14/27 (52%) 1.79 (0.87–3.71) 2.25 (1.02–4.98)
 Doesn’t earn 3/31 (10%) 0.23 (0.08–0.66) 0.24 (0.08–0.69) 5/31 (16%) 0.61 (0.22–1.67) 0.63 (0.22–1.81) 11/31 (35%) 0.95 (0.43–2.09) 1.12 (0.43–2.88)
Financial contribution to household relative to husband’s
 He higher/same 111/533 (21%) 94/533 (18%)    
 She higher 56/207 (27%) 1.83 (1.23–2.71) 1.52 (0.97–2.38) 48/207 (23%) 1.65 (1.09–2.52) 1.43 (0.88–2.34)    
  1. aAmong women currently married/living as married at baseline
  2. bParticipants reported their earnings in Tanzanian shillings in terms of either daily, weekly or monthly income. Reported daily and weekly earnings were converted to monthly earnings on the assumption that each participant worked for 22 days per month. The conversion to US Dollars (USD) was based on the exchange rate at the time of data collection (1 USD = 1887 Tanzanian shillings)
  3. cAdjusted for woman’s age, other income/financial contribution variable, partner’s age, having witnessed IPV as a child, woman’s education, partner’s education, relationship duration, and experience of household-level financial hardship in past year
  4. dAdjusted for woman’s age, partner’s age, having witnessed IPV as a child, woman’s education, partner’s education, relationship duration, and experience of household-level financial hardship in past year