\begin{Schunk}
\begin{Sinput}
 summary(imps[[1]])
\end{Sinput}
\begin{Soutput}
    stud_id        schl_id          Gender           Age           Grade       body1_o   body2_o  
 Min.   :   1   Min.   :  2.0   Min.   :0.000   Min.   :11.0   Min.   :6.000   SA: 807   SA: 847  
 1st Qu.:2278   1st Qu.: 59.0   1st Qu.:0.000   1st Qu.:12.0   1st Qu.:6.000   A : 804   A : 696  
 Median :4588   Median :122.0   Median :1.000   Median :12.0   Median :6.000   U : 755   U : 725  
 Mean   :4606   Mean   :117.2   Mean   :0.507   Mean   :12.1   Mean   :6.439   D : 751   D :1135  
 3rd Qu.:6925   3rd Qu.:172.0   3rd Qu.:1.000   3rd Qu.:13.0   3rd Qu.:7.000   SD:1167   SD: 881  
 Max.   :9224   Max.   :227.0   Max.   :1.000   Max.   :17.0   Max.   :7.000                      
                                                                                                  
 body3_o   body4_o   body5_o           phys1_o             phys2_o             phys3_o    
 SA: 763   SA: 857   SA: 728   EveryDay    : 328   EveryDay    : 214   EveryDay    : 310  
 A : 449   A : 596   A : 354   EveryWeek   : 443   EveryWeek   : 384   EveryWeek   : 315  
 U : 620   U : 736   U : 723   MoreOnceWeek: 425   MoreOnceWeek: 423   MoreOnceWeek: 342  
 D : 592   D : 983   D : 491   EveryMonth  :1117   EveryMonth  :1263   EveryMonth  : 685  
 SD:1860   SD:1112   SD:1988   Never       :1971   Never       :2000   Never       :2632  
                                                                                          
                                                                                          
         phys4_o             phys5_o             phys6_o             phys7_o    
 EveryDay    : 341   EveryDay    : 558   EveryDay    : 488   EveryDay    : 731  
 EveryWeek   : 323   EveryWeek   : 541   EveryWeek   : 505   EveryWeek   : 422  
 MoreOnceWeek: 351   MoreOnceWeek: 541   MoreOnceWeek: 654   MoreOnceWeek: 416  
 EveryMonth  : 742   EveryMonth  : 981   EveryMonth  :1000   EveryMonth  : 612  
 Never       :2527   Never       :1663   Never       :1637   Never       :2103  
                                                                                
                                                                                
         phys8_o          depre1_o         depre2_o         depre3_o         depre4_o   
 EveryDay    : 256   Never    :1229   Never    : 816   Never    :2600   Never    :1939  
 EveryWeek   : 278   Seldom   :1132   Seldom   : 987   Seldom   : 584   Seldom   : 611  
 MoreOnceWeek: 263   Sometimes:1323   Sometimes:1470   Sometimes: 569   Sometimes: 911  
 EveryMonth  : 577   Often    : 428   Often    : 711   Often    : 294   Often    : 489  
 Never       :2910   Always   : 172   Always   : 300   Always   : 237   Always   : 334  
                                                                                        
                                                                                        
      depre5_o         depre6_o              gotBu1_o              gotBu2_o   
 Never    :1505   Never    :1416   never         :1831   never         :2049  
 Seldom   : 738   Seldom   : 843   1 or 2        : 668   1 or 2        : 539  
 Sometimes: 934   Sometimes:1019   2-3 p/month   : 402   2-3 p/month   : 603  
 Often    : 628   Often    : 540   1 p/week      : 625   1 p/week      : 413  
 Always   : 479   Always   : 466   Several p/week: 758   Several p/week: 680  
                                                                              
                                                                              
           gotBu3_o              gotBu4_o              gotBu5_o              gotBu6_o   
 never         :2452   never         :1864   never         :2519   never         :2669  
 1 or 2        : 305   1 or 2        : 629   1 or 2        : 262   1 or 2        : 173  
 2-3 p/month   : 475   2-3 p/month   : 469   2-3 p/month   : 429   2-3 p/month   : 150  
 1 p/week      : 520   1 p/week      : 574   1 p/week      : 484   1 p/week      : 995  
 Several p/week: 532   Several p/week: 748   Several p/week: 590   Several p/week: 297  
                                                                                        
                                                                                        
           gotBu7_o              gotBu8_o              gotBu9_o              buOth1_o   
 never         :2217   never         :2723   never         :2785   never         :1966  
 1 or 2        : 388   1 or 2        : 146   1 or 2        :  97   1 or 2        : 705  
 2-3 p/month   : 409   2-3 p/month   : 460   2-3 p/month   : 507   2-3 p/month   : 387  
 1 p/week      : 660   1 p/week      : 484   1 p/week      : 581   1 p/week      : 646  
 Several p/week: 610   Several p/week: 471   Several p/week: 314   Several p/week: 580  
                                                                                        
                                                                                        
           buOth2_o              buOth3_o              buOth4_o              buOth5_o   
 never         :2273   never         :2525   never         :2555   never         :2704  
 1 or 2        : 477   1 or 2        : 262   1 or 2        : 297   1 or 2        : 159  
 2-3 p/month   : 449   2-3 p/month   : 189   2-3 p/month   : 405   2-3 p/month   : 386  
 1 p/week      : 509   1 p/week      : 536   1 p/week      : 511   1 p/week      : 495  
 Several p/week: 576   Several p/week: 772   Several p/week: 516   Several p/week: 540  
                                                                                        
                                                                                        
           buOth6_o              buOth7_o              buOth8_o              buOth9_o   
 never         :2767   never         :2618   never         :2758   never         :2819  
 1 or 2        : 190   1 or 2        : 216   1 or 2        : 144   1 or 2        :  94  
 2-3 p/month   : 613   2-3 p/month   : 204   2-3 p/month   : 345   2-3 p/month   : 579  
 1 p/week      : 409   1 p/week      : 678   1 p/week      : 633   1 p/week      : 217  
 Several p/week: 305   Several p/week: 568   Several p/week: 404   Several p/week: 575  
                                                                                        
                                                                                        
     alc1_o         alc2_o         alc3_o         alc4_o         alc5_o        body1_i     
 Never  :3597   Never  :3455   Never  :3766   Never  :3469   Never  :3589   Min.   :1.000  
 Rarely : 448   Rarely : 578   Rarely : 254   Rarely : 463   Rarely : 408   1st Qu.:3.000  
 Monthly:  85   Monthly:  87   Monthly:  83   Monthly: 146   Monthly:  88   Median :4.000  
 Weekly :  37   Weekly :  63   Weekly :  73   Weekly :  78   Weekly :  76   Mean   :3.623  
 Daily  : 117   Daily  : 101   Daily  : 108   Daily  : 128   Daily  : 123   3rd Qu.:5.000  
                                                                            Max.   :5.000  
                                                                            NA's   :1300   
    body2_i         body3_i         body4_i        body5_i         phys1_i         phys2_i     
 Min.   :1.000   Min.   :1.000   Min.   :1.00   Min.   :1.000   Min.   :1.000   Min.   :1.000  
 1st Qu.:3.000   1st Qu.:4.000   1st Qu.:3.00   1st Qu.:4.000   1st Qu.:3.000   1st Qu.:4.000  
 Median :4.000   Median :5.000   Median :4.00   Median :5.000   Median :4.000   Median :4.000  
 Mean   :3.558   Mean   :4.167   Mean   :3.68   Mean   :4.256   Mean   :3.938   Mean   :4.053  
 3rd Qu.:5.000   3rd Qu.:5.000   3rd Qu.:5.00   3rd Qu.:5.000   3rd Qu.:5.000   3rd Qu.:5.000  
 Max.   :5.000   Max.   :5.000   Max.   :5.00   Max.   :5.000   Max.   :5.000   Max.   :5.000  
 NA's   :1315    NA's   :1308    NA's   :1311   NA's   :1307    NA's   :78      NA's   :90     
    phys3_i         phys4_i         phys5_i         phys6_i         phys7_i         phys8_i     
 Min.   :1.000   Min.   :1.000   Min.   :1.000   Min.   :1.000   Min.   :1.000   Min.   :1.000  
 1st Qu.:4.000   1st Qu.:4.000   1st Qu.:2.000   1st Qu.:3.000   1st Qu.:2.000   1st Qu.:4.000  
 Median :5.000   Median :5.000   Median :4.000   Median :4.000   Median :4.000   Median :5.000  
 Mean   :4.186   Mean   :4.135   Mean   :3.638   Mean   :3.666   Mean   :3.693   Mean   :4.325  
 3rd Qu.:5.000   3rd Qu.:5.000   3rd Qu.:5.000   3rd Qu.:5.000   3rd Qu.:5.000   3rd Qu.:5.000  
 Max.   :5.000   Max.   :5.000   Max.   :5.000   Max.   :5.000   Max.   :5.000   Max.   :5.000  
 NA's   :107     NA's   :140     NA's   :109     NA's   :121     NA's   :100     NA's   :111    
    depre1_i        depre2_i        depre3_i        depre4_i        depre5_i        depre6_i    
 Min.   :1.000   Min.   :1.000   Min.   :1.000   Min.   :1.000   Min.   :1.000   Min.   :1.000  
 1st Qu.:1.000   1st Qu.:2.000   1st Qu.:1.000   1st Qu.:1.000   1st Qu.:1.000   1st Qu.:1.000  
 Median :2.000   Median :3.000   Median :1.000   Median :2.000   Median :2.000   Median :2.000  
 Mean   :2.332   Mean   :2.684   Mean   :1.817   Mean   :2.209   Mean   :2.485   Mean   :2.473  
 3rd Qu.:3.000   3rd Qu.:3.000   3rd Qu.:3.000   3rd Qu.:3.000   3rd Qu.:4.000   3rd Qu.:3.000  
 Max.   :5.000   Max.   :5.000   Max.   :5.000   Max.   :5.000   Max.   :5.000   Max.   :5.000  
 NA's   :78      NA's   :87      NA's   :96      NA's   :113     NA's   :117     NA's   :95     
    gotBu1_i        gotBu2_i        gotBu3_i        gotBu4_i        gotBu5_i        gotBu6_i    
 Min.   :1.000   Min.   :1.000   Min.   :1.000   Min.   :1.000   Min.   :1.000   Min.   :1.000  
 1st Qu.:1.000   1st Qu.:1.000   1st Qu.:1.000   1st Qu.:1.000   1st Qu.:1.000   1st Qu.:1.000  
 Median :1.000   Median :1.000   Median :1.000   Median :1.000   Median :1.000   Median :1.000  
 Mean   :1.848   Mean   :1.652   Mean   :1.398   Mean   :1.759   Mean   :1.353   Mean   :1.235  
 3rd Qu.:2.000   3rd Qu.:2.000   3rd Qu.:1.000   3rd Qu.:2.000   3rd Qu.:1.000   3rd Qu.:1.000  
 Max.   :5.000   Max.   :5.000   Max.   :5.000   Max.   :5.000   Max.   :5.000   Max.   :5.000  
 NA's   :1322    NA's   :1329    NA's   :1340    NA's   :1331    NA's   :1351    NA's   :1359   
    gotBu7_i        gotBu8_i        gotBu9_i        buOth1_i        buOth2_i       buOth3_i    
 Min.   :1.000   Min.   :1.000   Min.   :1.000   Min.   :1.000   Min.   :1.00   Min.   :1.000  
 1st Qu.:1.000   1st Qu.:1.000   1st Qu.:1.000   1st Qu.:1.000   1st Qu.:1.00   1st Qu.:1.000  
 Median :1.000   Median :1.000   Median :1.000   Median :1.000   Median :1.00   Median :1.000  
 Mean   :1.568   Mean   :1.195   Mean   :1.166   Mean   :1.579   Mean   :1.42   Mean   :1.292  
 3rd Qu.:2.000   3rd Qu.:1.000   3rd Qu.:1.000   3rd Qu.:2.000   3rd Qu.:1.00   3rd Qu.:1.000  
 Max.   :5.000   Max.   :5.000   Max.   :5.000   Max.   :5.000   Max.   :5.00   Max.   :5.000  
 NA's   :1347    NA's   :1357    NA's   :1355    NA's   :1339    NA's   :1349   NA's   :1364   
    buOth4_i        buOth5_i       buOth6_i        buOth7_i       buOth8_i        buOth9_i    
 Min.   :1.000   Min.   :1.0    Min.   :1.000   Min.   :1.00   Min.   :1.000   Min.   :1.000  
 1st Qu.:1.000   1st Qu.:1.0    1st Qu.:1.000   1st Qu.:1.00   1st Qu.:1.000   1st Qu.:1.000  
 Median :1.000   Median :1.0    Median :1.000   Median :1.00   Median :1.000   Median :1.000  
 Mean   :1.264   Mean   :1.2    Mean   :1.158   Mean   :1.25   Mean   :1.155   Mean   :1.147  
 3rd Qu.:1.000   3rd Qu.:1.0    3rd Qu.:1.000   3rd Qu.:1.00   3rd Qu.:1.000   3rd Qu.:1.000  
 Max.   :5.000   Max.   :5.0    Max.   :5.000   Max.   :5.00   Max.   :5.000   Max.   :5.000  
 NA's   :1358    NA's   :1355   NA's   :1356    NA's   :1359   NA's   :1365    NA's   :1357   
     alc1_i          alc2_i          alc3_i          alc4_i          alc5_i     
 Min.   :1.000   Min.   :1.000   Min.   :1.000   Min.   :1.000   Min.   :1.000  
 1st Qu.:1.000   1st Qu.:1.000   1st Qu.:1.000   1st Qu.:1.000   1st Qu.:1.000  
 Median :1.000   Median :1.000   Median :1.000   Median :1.000   Median :1.000  
 Mean   :1.191   Mean   :1.224   Mean   :1.152   Mean   :1.251   Mean   :1.206  
 3rd Qu.:1.000   3rd Qu.:1.000   3rd Qu.:1.000   3rd Qu.:1.000   3rd Qu.:1.000  
 Max.   :5.000   Max.   :5.000   Max.   :5.000   Max.   :5.000   Max.   :5.000  
 NA's   :192     NA's   :207     NA's   :257     NA's   :246     NA's   :206    
\end{Soutput}
\end{Schunk}
