| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 hour per day | 298 | 
                                    
                                    23.2%
                                 | 
| 2 | 1 to 2 hours per day | 278 | 
                                    
                                    21.7%
                                 | 
| 3 | 3 to 4 hours per day | 278 | 
                                    
                                    21.7%
                                 | 
| 4 | 5 to 6 hours per day | 150 | 
                                    
                                    11.7%
                                 | 
| 5 | 7 to 8 hours per day | 69 | 
                                    
                                    5.4%
                                 | 
| 6 | More than 8 hours per day | 211 | 
                                    
                                    16.4%
                                 | 
| Sysmiss | 73 |