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Table 1 The characteristics of the study sample

From: Factors predicting mood changes in oral contraceptive pill users

  All (n = 500) Women experiencing OCP side effects (n = 406) Women not experiencing OCP side effects(n = 94) P-value*
Age (year)     
Mean (SD) 27.5 (5.6) 27.81 (5.58) 27.56 (5.42) 0.09
Range 15-47 15-43 16-47  
Parity (number)     
Mean (SD) 2.00 (1.18) 2.07 (1.17) 1.84 (0.96) 0.57
Range 0-10 0-7 0-10  
Duration of OCP use (months)     
Mean (SD) 25.1 (3.45) 27.75 (6.79) 23.44 (10.03) 0.34
Range 5-55 5-50 5-55  
Education (number, %)     0.57
Illiterate/primary 164 (32.8) 129 (31.8) 35 (37.2)  
Secondary 291 (58.2) 240 (59.1) 51 (54.2)  
Higher 45 (9) 37 (9.1) 8 (8.6)  
Ethnicity (number, %)     0.84
Arab 334 (66.8) 272 (66.9) 62 (66.0)  
Lor 130 (26) 106 (26.1) 24 (25.5)  
Fars 36 (7.2) 28 (7.0) 8 (8.5)  
Place of living (number, %)     0.002
Rural 75 (15) 51 (22.6) 24 (25.6)  
Urban 425 (85) 355 (77.4) 70 (74.4)  
Self-efficacy score     
Mean (SD) 12.91 (2.70) 12.74 (2.37) 14.03 (3.02) 0.017
Range 6-24 6-24 6-24  
Receiving information on OCP side effects (number, %)     0.001
Yes 293 (58.6) 221 (54.4) 72 (76.5)  
No 207 (41.4) 185 (45.6) 22 (23.5)  
  1. * Comparisons were made between women who did and did not report experiencing OCP use side effects. P-values derived from t-test for continuous data and chi-square for categorical information.