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Table 3 Distribution of study outcomes at T1 and T3, by treatment arm and effect estimates of primary and secondary outcomes (Intent to Treat Analysis)

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

  T1-T3 Comparison Treatment X Time interaction
  Treatment type Baseline (T1)
N (%)
Endline (T3)
N (%)
OR (95% CI) p-value OR (95% CI) p-value
Physical and Sexual IPV (past year) Intervention 168/470
(35.7%)
72/365
(19.7%)
0.40 (0.28, 0.55) <0.01* 0.78 (0.49, 1.24) 0.30
Control 152/480
(31.7%)
72/352
(20.5%)
0.51 (0.36, 0.72) <0.01*
Physical IPV (past year) Intervention 454/470
(96.6%)
209/365
(57.3%)
0.05 (0.03, 0.08) <0.01* 1.48 (0.63, 3.49) 0.37
Control 470/480
(97.9%)
210/351
(59.8%)
0.03 (0.016, 0.06) <0.01*   
Sexual IPV (past year) Intervention 184/470
(39.2%)
94/365
(25.8%)
0.47 (0.34, 0.64) <0.01* 0.90 (0.57, 1.41) 0.65
Control 162/478
(33.9%)
81/351
(23.1%)
0.54 (0.39, 0.75) <0.01*   
Reproductive Coercion (past year) Intervention 106/306
(34.6%)
52/226
(23.0%)
0.56 (0.37, 0.83) <0.01* 0.71 (0.41, 1.23) 0.22
Control 112/322
(34.8%)
65/220
(29.6%)
0.79 (0.54, 1.17) 0.23   
  Treatment type Baseline (T1)
Mean (SD)
Endline (T3)
Mean (SD)
beta (95% CI) p-value beta (95% CI) p-value
Use of community resourcesa (past 6 mos) Intervention N = 470,
0.30 (0.68)
N = 365,
0.51 (1.10)
0.20 (0.08, 0.31) <0.01* 0.08 (-0.09, 0.24) 0.36
Control N = 479,
0.30 (0.78)
N = 361,
0.43 (1.04)
0.11 (-0.003, 0.23) 0.056   
Safety planning behaviorsa (ever T1 vs. past 12 mos T3) Intervention N = 470,
3.16 (2.85)
N = 365,
4.08 (3.34)
0.88 (0.58, 1.18) <0.01* 0.36 (-0.07, 0.79) 0.10
Control N = 479,
3.16 (2.91)
N = 351,
3.70 (3.24)
0.52 (0.20, 0.83) <0.01*   
Quality of Lifea (mental past month) Intervention N = 470,
35.14 (7.45)
N = 363,
37.20 (7.69)
2.34 (1.41, 3.27) <0.01* 0.90 (-0.43, 2.24) 0.19
Control N = 479,
35.39 (7.80)
N = 350,
36.42 (7.99)
1.46 (0.48, 2.44) <0.01*   
  1. a Outcome variable is treated as a continuous variable, therefore regression coefficient beta and 95% confident intervals of beta are reported
  2. * Denotes significant finding