Research Article

Incidence and Health Related Quality of Life of Opioid-Induced Constipation in Chronic Noncancer Pain Patients: A Prospective Multicentre Cohort Study

Table 3

OIC incidence at 6 months.

OIC Incidence at 6 months of follow-up

VariableNo ConstipationConstipation value

Age, years0.171
18-45123 (24.3%)28 (16.8%)
45-60154 (30.4%)60 (35.9%)
60-75167 (32.9%)54 (32.3%)
>7563 (12.4%)25 (15.0%)

Gender
Female354 (69.8%)134 (80.2%)0.009
Male153 (30.2%)33 (19.8%)

BMI27.33 (5.50)26.87 (5.10)0.357

Education level 0.562
No education15 (3.0%)4 (2.4%)
1-4 years (basic 1st cycle)246 (48.6%)94 (56.3%)
5-9 years (basic 2nd and 3rd cycles)127 (25.1%)36 (21.6%)
10-12 years (secondary)61 (12.1%)17 (10.2%)
More than 12 years (higher)57 (11.3%)16 (9.6%)

Opioid therapy0.034
Yes338 (72.8%)126 (75.4%)
No169 (80.5%)41 (24.6%)

Analgesic Therapy0.087
Non-opioid168 (80.4%)41 (24.6%)
Weak opioid233 (71.9%)91 (54.5%)
Strong opioid104 (74.8%)35 (21.0%)

Laxatives use2 (100%)51 (100%)<0.001

Depressive disorder 102 (21.4%)37 (24.0%)0.504

OIC: opioid-induced constipation; BMI: body mass index. Data are presented as (%) except BMI which is presented as mean ± standard deviation. Proportions are calculated as column proportions. values are derived from (a) x2; (b) test comparisons.