Variables | Odds ratio (95% confidence interval) | ||
---|---|---|---|
Rarely | Sometimes | Always | |
Use of customer service manual (Men) | |||
Yes | 1.45 (1.22–1.73) | 1.94 (1.21–3.13) | 3.16 (1.38–7.23) |
No | 1.00 (reference) | 1.73 (1.36–2.20) | 2.66 (1.82–3.90) |
Use of customer service manual (Women) | |||
Yes | 1.24 (1.06–1.44) | 1.99 (1.34–2.97) | 8.85 (3.96–19.75) |
No | 1.00 (reference) | 1.77 (1.41–2.21) | 2.02 (1.47–2.78) |