E M Bitzer1, H Dörning, F W Schwartz. 1. Institut für Sozialmedizin, Epidemiologie und Gesundheitssystemforschung, Hannover. bitzer@iseg.org
Abstract
BACKGROUND: The study was conducted in cooperation with a German sickness fund (Gmünder Ersatzkasse GEK) to determine the success of surgery for inguinal hernia from the patient's perspective. METHODS: We developed a standardized questionnaire containing, among other things, pre- and postoperative subjective assessment of disease-specific symptoms, complications, and health-related quality of life (SF-36). All beneficiaries (age 35-75 years), who were treated in the hospital for inguinal hernia repair (ICD-550) between November 1996 and January 1997 (n = 502) were sent the questionnaire at an average of 3 months (T1) and 14 months postoperatively. The response rate at T1 was 73%. At T2 data from 280 patients were available for analysis: 96% were male (mean age: 54 years). Descriptive and multivariate analysis (GSK model) were performed to reveal determinants of disease-specific symptom alleviation and health-related quality of life. RESULTS: Postoperative hematoma and genital swelling were reported by a quarter of the respondents, each. Pyogenic wound infection appeared in 4%. Compared to the (recalled) preoperative symptom level at T1 substantial and statistical significant improvements were apparent (P < 0.0001). These were maintained at T2 (disease-specific symptom checklist: preoperative: 10.7; T1: 2.8; T2: 2.5). Health-related quality of life reached the level of the German reference population in three of the eight subscales of the SF-36 at T1, and in five SF-36 subscales at T2. However, at T2 (still existing) deviations from the reference population in three of the SF-36 subscales were small. Bi- and multivariate analysis reveals that the appearance of complications from the patient's perspective has to be considered the main determinant of disease-specific symptom alleviation and health-related quality of life after hernia repair. CONCLUSION: Inguinal hernia repair leads to substantial improvements in disease-specific symptoms. Overall, health-related quality of life reaches the level of the reference population. The patient's perception of complications is the major determinant of health outcomes.
BACKGROUND: The study was conducted in cooperation with a German sickness fund (Gmünder Ersatzkasse GEK) to determine the success of surgery for inguinal hernia from the patient's perspective. METHODS: We developed a standardized questionnaire containing, among other things, pre- and postoperative subjective assessment of disease-specific symptoms, complications, and health-related quality of life (SF-36). All beneficiaries (age 35-75 years), who were treated in the hospital for inguinal hernia repair (ICD-550) between November 1996 and January 1997 (n = 502) were sent the questionnaire at an average of 3 months (T1) and 14 months postoperatively. The response rate at T1 was 73%. At T2 data from 280 patients were available for analysis: 96% were male (mean age: 54 years). Descriptive and multivariate analysis (GSK model) were performed to reveal determinants of disease-specific symptom alleviation and health-related quality of life. RESULTS:Postoperative hematoma and genital swelling were reported by a quarter of the respondents, each. Pyogenic wound infection appeared in 4%. Compared to the (recalled) preoperative symptom level at T1 substantial and statistical significant improvements were apparent (P < 0.0001). These were maintained at T2 (disease-specific symptom checklist: preoperative: 10.7; T1: 2.8; T2: 2.5). Health-related quality of life reached the level of the German reference population in three of the eight subscales of the SF-36 at T1, and in five SF-36 subscales at T2. However, at T2 (still existing) deviations from the reference population in three of the SF-36 subscales were small. Bi- and multivariate analysis reveals that the appearance of complications from the patient's perspective has to be considered the main determinant of disease-specific symptom alleviation and health-related quality of life after hernia repair. CONCLUSION:Inguinal hernia repair leads to substantial improvements in disease-specific symptoms. Overall, health-related quality of life reaches the level of the reference population. The patient's perception of complications is the major determinant of health outcomes.