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Table 2 Baseline (T1) characteristics of study sample, by treatment arm (N = 950)

From: A nurse-delivered, clinic-based intervention to address intimate partner violence among low-income women in Mexico City: findings from a cluster randomized controlled trial

  Treatment (n = 470) Mean (SD) or n (%) Control (n = 480) Mean (SD) or n (%) t statistic or χ2 P value
Age, years 30.12 (7.28) 29.60 (7.03) 1.12 0.26
Number of children 2.28 (1.18) 2.13 (1.22) 1.98 0.05
Partner’s age minus woman’s age, years 3.19 (5.90) 3.50 (6.66) 0.78 0.44
Previously screened for IPV in healthcare setting 43 (9.15%) 52 (10.86%) 0.77 0.38
Reason for visita    1.25 0.54
 General appointment 108 (22.98%) 124 (25.83%)   
 Gynecological appointment 34 (7.23%) 36 (7.50%)   
 Other 328 (69.79%) 318 (66.25%)   
Legal status    3.07 0.38
 Single 22 (4.68%) 35 (7.29%)   
 Married 112 (23.83%) 115 (23.96%)   
 Common law marriage 321 (68.30%) 317 (66.04%)   
 Separated/Divorced 15 (3.19%) 13 (2.71%)   
Birthplace    1.35 0.25
 Mexico City 344 (73.19%) 335 (69.79%)   
 State of Mexico 45 (9.57%) 39 (8.13%)   
 Another state/country 81 (17.23%) 106 (22.08%)   
Schooling    4.33 0.63
 No schooling 16 (3.40%) 10 (2.08%)   
 Primary 99 (21.06%) 108 (22.50%)   
 Secondary 196 (41.70%) 205 (42.50%)   
 High school 100 (21.28%) 86 (17.92%)   
 Technical degree 35 (7.45%) 45 (9.38%)   
 College 22 (4.68%) 24 (5.00%)   
 Post-graduate 2 (0.43%) 2 (0.42%)   
Monthly income MXN (USD)a    3.33 0.19
 Under $2 K (133) 170 (61.59%) 148 (54.01%)   
 $2 K to $4 K (133–266) 86 (30.80%) 99 (36.13%)   
 $4 K+ (266+) 21 (7.61%) 27 (9.85%)   
Religiona    3.03 0.39
 Catholic 385 (81.91%) 385 (80.38%)   
 Christian 29 (6.17%) 36 (7.52%)   
 None 35 (7.45%) 28 (5.85%)   
 Other 21 (4.47%) 30 (6.26%)   
Past-year IPV     
 Physical violence 454 (96.60%) 470 (97.92%) 1.56 0.21
 Sexual violence 184 (39.15%) 162 (33.89%) 2.83 0.09
 Physical and sexual violence 168 (35.74%) 152 (31.67%) 1.77 0.18
Reproductive coercion 106 (34.64%) 112 (34.70%) 0.00 0.97
Safety planning, past 12 months 3.16 (2.85) 3.16 (2.91) 0.02 0.99
Use of community resources, past 6 months 0.30 (0.68) 0.30 (0.78) 0.03 0.97
Quality of life score (mental) 35.14 (7.45) 35.29 (7.90) 0.31 0.76
  1. a n values do not total to 950 due to missing values
  2. IPV intimate partner violence