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Table 2 Association between baseline variables and interaction with intervention

From: Process evaluation of a mobile phone-based intervention to support post-abortion contraception in Cambodia

  Never pressed '1' Ever pressed '1' Crude OR p value Adjusted ORa P value
  N = 127 N = 122     
Age group
 Age <25 (r) 53 (60%) 35 (40%) 1.00    
 Age >25 74 (46%) 87 (54%) 1.78 (1.05-3.02) 0.032 1.06 (0.52-2.19) 0.864
Residence (urban/rural)
 Urban (r) 48 (56%) 37 (44%) 1.00    
 Rural 79 (48%) 85 (52%) 1.40 (0.82-2.36) 0.215 1.49 (0.86-2.59) 0.153
Socio-economic status
 Access to motorised transport (r) 119 (54%) 102 (46%) 1.00    
 No access to motorised transport 8 (29%) 20 (71%) 2.92 (1.23-6.90) 0.015 3.36 (1.35-8.40) 0.009
Education
 Secondary or above (r) 85 (54%) 71 (46%) 1.00    
 None or primary 42 (45%) 51 (55%) 1.45 (0.87-2.44) 0.155 1.02 (0.58-1.80) 0.936
Marital status
 Never married or living together (r) 12 (80%) 3 (20%) 1.00    
 Married/living together 112 (48%) 119 (52%) 4.25 (1.17-15.46) 0.028 3.13 (0.76-12.91) 0.091
 Divorced/separated 3 (100%) 0 (0%) 1.00 (.-.) . 1.00 (.-.)
# living children
 0 (r) 51 (65%) 28 (35%) 1.00    
 1 or more 76 (45%) 94 (55%) 2.25 (1.30-3.91) 0.004 2.24 (1.07-4.72) 0.033
# previous abortions
 0 (r) 81 (56%) 63 (44%) 1.00    
 1 or more 46 (44%) 59 (56%) 1.65 (0.99-2.74) 0.053 1.68 (0.96-2.94) 0.067
# previous abortions
 0 81 (56%) 63 (44%) 1.00    
 1 36 (52%) 33 (48%) 1.18 (0.66-2.10) 0.576 1.26 (0.68-2.33) 0.014
 2 or more 10 (28%) 26 (72%) 3.34 (1.50-7.44) 0.003 3.49 (1.45-8.40)
Previous contraception use
 No (r) 57 (54%) 49 (46%) 1.00    
 Yes 70 (49%) 73 (51%) 1.21 (0.73-2.01) 0.452 1.00 (0.57-1.74) 0.997
Contraception decision-making
 Joint decision (r) 70 (51%) 68 (49%) 1.00    
 Mainly participant 26 (47%) 29 (53%) 1.15 (0.61-2.15) 0.665 0.89 (0.45-1.76) 0.931
 Mainly husband/partner 17 (45%) 21 (55%) 1.27 (0.62-2.62) 0.514 1.06 (0.48-2.35)
Mobile phone access
 Never shares (r) 65 (52%) 61 (48%) 1.00    
 Shares 62 (50%) 61 (50%) 1.05 (0.64-1.72) 0.852 0.99 (0.59-1.68) 0.979
Disclosure of abortion to others
 No (r) 10 (59%) 7 (41%) 1.00    
 Yes 52 (49%) 54 (51%) 1.48 (0.53-4.19) 0.457 1.14 (0.36-3.56) 0.825
PAFP intentions
 No (r) 14 (78%) 4 (22%) 1.00    
 Undecided 68 (49%) 72 (51%) 3.71 (1.16-11.82) 0.027 2.69 (0.80-9.12) 0.248
 Yes 45 (49%) 46 (51%) 3.58 (1.09-11.70) 0.035 2.46 (0.71-8.55)
Fertility plans
 Have a/another child (r) 82 (53%) 73 (47%) 1.00    
 No more/none 34 (50%) 34 (50%) 1.12 (0.63-1.99) 0.690 0.67 (0.34-1.31) 0.388
 Undecided 11 (42%) 15 (58%) 1.53 (0.66-3.55) 0.319 1.15 (0.46-2.86)
Abortion method
 Surgical (r) 80 (54%) 67 (46%) 1.00    
 Medical 47 (46%) 55 (54%) 1.40 (0.84-2.32) 0.196 1.85 (1.06-3.22) 0.030
Phone credit
 Always (r) 53 (55%) 44 (45%) 1.00    
 Usually 38 (58%) 27 (42%) 0.86 (0.45-1.61) 0.631 0.91 (0.47-1.77) 0.480
 Sometimes 36 (41%) 51 (59%) 1.71 (0.95-3.06) 0.073 1.35 (0.73-2.52)
  1. aAdjusted for age, socio-economic status, residence, education and number of living children