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Table 5 Effects of maternal socio-demographic and obstetric factors on breastfeeding cessation.

From: Factors associated with breastfeeding cessation in nursing mothers in a peer support programme in Eastern Lancashire

  Breastfeeding duration from KM analyses Unadjusted Cox HR   Adjusted Cox HRΦ  
Variable Mean (95% CI) Median (95% CI) (95% CI) P value (95% CI) P value
Borough of residence       
Both 21.6 (20.86 to 22.37) 27 (25.70 to 28.30) - - - -
BwD 22.5 (21.63 to 23.39) 27 (26.11 to 27.88) 1 - - -
Hyndburn 18.5 (17.36 to 19.73) 22 (18.69 to 25.30) 1.36 (1.18 to 1.55) < 0.0001 - -
Ethnicity      - -
White 19.8 (18.53 to 20.97) 20 (17.60 to 22.39) 1 - 1 -
Non-white 23.4 (22.42 to 24.34) 27 (26.03 to 27.97) 0.65 (0.57 to 0.73) < 0.0001 0.59 (0.52 to 0.67) <0.0001
▪ Indian 24.8 (23.53 to 26.15) 28 (26.67 to 29.33) 0.55 (0.46 to 0.64) < 0.0001 0.53 (0.45 to 0.62) < 0.0001
▪ Pakistani 21.8 (20.27 to 23.25) 26 (25.05 to 26.95) 0.79 (0.68 to 0.91) 0.0015 0.69 (0.60 to 0.81) < 0.0001
▪ All Blacks 25.1 (20.79 to 29.51) 28 (25.18 to 30.81) 0.40 (0.19 to 0.84) 0.0155 0.35 (0.16 to 0.74) 0.0057
▪ OthersΨ 24.5 (20.11 to 28.81) 27 (25.89 to 28.11) 0.52 (0.35 to 0.78) 0.0018 0.48 (0.32 to 0.73) 0.0005
Marital status       
Single mothers 18.2 (15.19 to 21.17) 24 (17.77 to 30.23) 1 - - -
Mothers with partners 21.6 (20.89 to 22.35) 27 (25.69 to 28.31) 0.80 (0.58 to 1.11) 0.1815 - -
IMD quartile       
1st quartile 21.3 (19.69 to 22.82) 25 (22.71 to 27.29) 1 - - -
2nd quartile 20.9 (19.52 to 22.21) 26 (23.36 to 28.64) 1.01 (0.86 to 1.19) 0.8873 - -
3rd quartile 23.2 (21.37 to 24.97) 27 (26.21 to 27.79) 0.78 (0.66 to 0.92) 0.0043 - -
4th quartile 20.8 (19.66 to 21.96) 27 (24.86 to 29.13) 0.90 (0.76 to 1.06) 0.2097 - -
Parity       
Primips 20.4 (19.24 to 21.54) 25 (23.19 to 26.81) 1.25 (1.11 to 1.41) 0.0003 1.23 (1.09 to 1.39) 0.0007
Multips§ 22.5 (21.54 to 23.50) 27 (25.99 to 28.01) 1 - 1 -
   ▪ 2nd births 20.0 (16.71 to 23.35) 18 (14.21 to21.79) - - - -
   ▪ 3rd births 22.4 (21.05 to 23.80) 27 (26.12 to 27.88) - - - -
   ▪ 4th births 23.5 (21.55 to 25.36) 27 (23.98 to 30.02) - - - -
   ▪ 5th births 22.6 (20.44 to 24.76) 27 (25.63 to 28.37) - - - -
   ▪ 6th - 9th births 22.4 (20.46 to 24.42) 29 (not calculated) - - - -
▪ Mothers with nth birth;
(1 ≤ n ≤ 8)
- - 1† - 1† -
   ▪ Mothers with (n+1)th birth - - 0.92 (0.89 to 0.96) < 0.0001 0.93 (0.89 to 0.97) 0.0006
Mode of delivery       
Vaginal 22.0 (21.15 to 22.88) 27 (25.72 to 28.28) 1 - - -
▪ Operative delivery 20.4 (18.95 to 21.92) 25 (23.15 to 26.85) 1.16 (1.01 to 1.32) 0.0307 - -
   ▪ Caesarean 20.9 (19.10 to 22.71) 25 (23.18 to 26.82) 1.13 (0.96 to 1.31) 0.1336 - -
   ▪ Instrumental 19.5 (16.88 to 22.03) 24 (19.67 to 28.32) 1.23 (0.98 to 1.53) 0.0523 - -
  1. Φ Variables that did not significantly contribute to the fitness of the model were dropped hence no adjusted HRs were calculated for them.
  2. Reference category.
  3. ΨChinese, Bangladeshi, other ethnic groups constituted "Others". This group is referred to in the text of this paper as other ethnic groups.
  4. §Birth order was entered in the Cox model as a continuous variable hence HRs were not reported for the sub-categories used for KM analyses.